Skip to content

T
TDengine

taosdata / TDengine
1 年多 前同步成功

通知 1185
Star 22016
Fork 4786
T
TDengine
未验证 提交 bcadc8d8 编写于 作者: D dapan1121 提交者： GitHub
浏览文件
操作

Merge pull request #22070 from wangjiaming0909/fix/m/TS-3671 

fix: state/session/event window with order by _wstart/_wend has no effect
上级 f2ee9922 b850c1af
隐藏空白更改
内联 并排
Showing with 1258 addition and 19 deletion
include/libs/nodes/plannodes.h
浏览文件 @ bcadc8d8
......@@ -247,6 +247,7 @@ typedef struct SSortLogicNode {
SNodeList* pSortKeys;
bool groupSort;
int64_t maxRows;
bool skipPKSortOpt;
} SSortLogicNode;
typedef struct SPartitionLogicNode {
......
source/libs/planner/src/planLogicCreater.c
浏览文件 @ bcadc8d8
......@@ -1034,7 +1034,6 @@ static int32_t createSortLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
pSort->node.resultDataOrder = isPrimaryKeySort(pSelect->pOrderByList)
? (pSort->groupSort ? DATA_ORDER_LEVEL_IN_GROUP : DATA_ORDER_LEVEL_GLOBAL)
: DATA_ORDER_LEVEL_NONE;
int32_t code = nodesCollectColumns(pSelect, SQL_CLAUSE_ORDER_BY, NULL, COLLECT_COL_TYPE_ALL, &pSort->node.pTargets);
if (TSDB_CODE_SUCCESS == code && NULL == pSort->node.pTargets) {
code = nodesListMakeStrictAppend(&pSort->node.pTargets,
......@@ -1048,6 +1047,7 @@ static int32_t createSortLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
}
SNode* pNode = NULL;
SOrderByExprNode* firstSortKey = (SOrderByExprNode*)nodesListGetNode(pSort->pSortKeys, 0);
if (isPrimaryKeySort(pSelect->pOrderByList)) pSort->node.outputTsOrder = firstSortKey->order;
if (firstSortKey->pExpr->type == QUERY_NODE_COLUMN) {
SColumnNode* pCol = (SColumnNode*)firstSortKey->pExpr;
int16_t projIdx = 1;
......
source/libs/planner/src/planOptimizer.c
浏览文件 @ bcadc8d8
......@@ -1168,7 +1168,8 @@ static bool sortPriKeyOptMayBeOptimized(SLogicNode* pNode) {
return false;
}
SSortLogicNode* pSort = (SSortLogicNode*)pNode;
if (!sortPriKeyOptIsPriKeyOrderBy(pSort->pSortKeys) || 1 != LIST_LENGTH(pSort->node.pChildren)) {
if (pSort->skipPKSortOpt || !sortPriKeyOptIsPriKeyOrderBy(pSort->pSortKeys) ||
1 != LIST_LENGTH(pSort->node.pChildren)) {
return false;
}
SNode* pChild;
......@@ -1181,8 +1182,8 @@ static bool sortPriKeyOptMayBeOptimized(SLogicNode* pNode) {
return true;
}
static int32_t sortPriKeyOptGetSequencingNodesImpl(SLogicNode* pNode, bool groupSort, bool* pNotOptimize,
SNodeList** pSequencingNodes) {
static int32_t sortPriKeyOptGetSequencingNodesImpl(SLogicNode* pNode, bool groupSort, EOrder sortOrder,
bool* pNotOptimize, SNodeList** pSequencingNodes) {
if (NULL != pNode->pLimit || NULL != pNode->pSlimit) {
*pNotOptimize = false;
return TSDB_CODE_SUCCESS;
......@@ -1199,15 +1200,21 @@ static int32_t sortPriKeyOptGetSequencingNodesImpl(SLogicNode* pNode, bool group
}
case QUERY_NODE_LOGIC_PLAN_JOIN: {
int32_t code = sortPriKeyOptGetSequencingNodesImpl((SLogicNode*)nodesListGetNode(pNode->pChildren, 0), groupSort,
pNotOptimize, pSequencingNodes);
sortOrder, pNotOptimize, pSequencingNodes);
if (TSDB_CODE_SUCCESS == code) {
code = sortPriKeyOptGetSequencingNodesImpl((SLogicNode*)nodesListGetNode(pNode->pChildren, 1), groupSort,
pNotOptimize, pSequencingNodes);
sortOrder, pNotOptimize, pSequencingNodes);
}
return code;
}
case QUERY_NODE_LOGIC_PLAN_WINDOW:
return nodesListMakeAppend(pSequencingNodes, (SNode*)pNode);
case QUERY_NODE_LOGIC_PLAN_WINDOW: {
SWindowLogicNode* pWindowLogicNode = (SWindowLogicNode*)pNode;
// For interval window, we always apply sortPriKey optimization.
// For session/event/state window, the output ts order will always be ASC.
// If sort order is also asc, we apply optimization, otherwise we keep sort node to get correct output order.
if (pWindowLogicNode->winType == WINDOW_TYPE_INTERVAL || sortOrder == ORDER_ASC)
return nodesListMakeAppend(pSequencingNodes, (SNode*)pNode);
}
case QUERY_NODE_LOGIC_PLAN_AGG:
case QUERY_NODE_LOGIC_PLAN_PARTITION:
*pNotOptimize = true;
......@@ -1221,23 +1228,25 @@ static int32_t sortPriKeyOptGetSequencingNodesImpl(SLogicNode* pNode, bool group
return TSDB_CODE_SUCCESS;
}
return sortPriKeyOptGetSequencingNodesImpl((SLogicNode*)nodesListGetNode(pNode->pChildren, 0), groupSort,
return sortPriKeyOptGetSequencingNodesImpl((SLogicNode*)nodesListGetNode(pNode->pChildren, 0), groupSort, sortOrder,
pNotOptimize, pSequencingNodes);
}
static int32_t sortPriKeyOptGetSequencingNodes(SLogicNode* pNode, bool groupSort, SNodeList** pSequencingNodes) {
static EOrder sortPriKeyOptGetPriKeyOrder(SSortLogicNode* pSort) {
return ((SOrderByExprNode*)nodesListGetNode(pSort->pSortKeys, 0))->order;
}
static int32_t sortPriKeyOptGetSequencingNodes(SSortLogicNode* pSort, bool groupSort, SNodeList** pSequencingNodes) {
bool notOptimize = false;
int32_t code = sortPriKeyOptGetSequencingNodesImpl(pNode, groupSort, &notOptimize, pSequencingNodes);
int32_t code =
sortPriKeyOptGetSequencingNodesImpl((SLogicNode*)nodesListGetNode(pSort->node.pChildren, 0), groupSort,
sortPriKeyOptGetPriKeyOrder(pSort), &notOptimize, pSequencingNodes);
if (TSDB_CODE_SUCCESS != code || notOptimize) {
NODES_CLEAR_LIST(*pSequencingNodes);
}
return code;
}
static EOrder sortPriKeyOptGetPriKeyOrder(SSortLogicNode* pSort) {
return ((SOrderByExprNode*)nodesListGetNode(pSort->pSortKeys, 0))->order;
}
static int32_t sortPriKeyOptApply(SOptimizeContext* pCxt, SLogicSubplan* pLogicSubplan, SSortLogicNode* pSort,
SNodeList* pSequencingNodes) {
EOrder order = sortPriKeyOptGetPriKeyOrder(pSort);
......@@ -1276,10 +1285,17 @@ static int32_t sortPriKeyOptApply(SOptimizeContext* pCxt, SLogicSubplan* pLogicS
static int32_t sortPrimaryKeyOptimizeImpl(SOptimizeContext* pCxt, SLogicSubplan* pLogicSubplan, SSortLogicNode* pSort) {
SNodeList* pSequencingNodes = NULL;
int32_t code = sortPriKeyOptGetSequencingNodes((SLogicNode*)nodesListGetNode(pSort->node.pChildren, 0),
pSort->groupSort, &pSequencingNodes);
if (TSDB_CODE_SUCCESS == code && NULL != pSequencingNodes) {
code = sortPriKeyOptApply(pCxt, pLogicSubplan, pSort, pSequencingNodes);
int32_t code = sortPriKeyOptGetSequencingNodes(pSort, pSort->groupSort, &pSequencingNodes);
if (TSDB_CODE_SUCCESS == code) {
if (pSequencingNodes != NULL) {
code = sortPriKeyOptApply(pCxt, pLogicSubplan, pSort, pSequencingNodes);
} else {
// if we decided not to push down sort info to children, we should propagate output ts order to parents of pSort
optSetParentOrder(pSort->node.pParent, sortPriKeyOptGetPriKeyOrder(pSort), 0);
// we need to prevent this pSort from being chosen to do optimization again
pSort->skipPKSortOpt = true;
pCxt->optimized = true;
}
}
nodesClearList(pSequencingNodes);
return code;
......
tests/script/tsim/query/r/explain_tsorder.result
浏览文件 @ bcadc8d8
......@@ -2798,3 +2798,1163 @@ taos> select last(ts) as ts, c2 as d from d1 group by c2 order by ts desc, c2 as
========================================
2022-05-15 00:01:08.000 | 234 |
taos> explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Event (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Start Cond: (`test`.`meters`.`c2` > 0)
*************************** 3.row ***************************
QUERY_PLAN: End Cond: (`test`.`meters`.`c2` < 100)
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: -> Event (functions=3 width=24)
*************************** 4.row ***************************
QUERY_PLAN: Start Cond: (`test`.`meters`.`c2` > 0)
*************************** 5.row ***************************
QUERY_PLAN: End Cond: (`test`.`meters`.`c2` < 100)
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Event (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Start Cond: (`test`.`meters`.`c2` > 0)
*************************** 3.row ***************************
QUERY_PLAN: End Cond: (`test`.`meters`.`c2` < 100)
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: -> Event (functions=3 width=24)
*************************** 4.row ***************************
QUERY_PLAN: Start Cond: (`test`.`meters`.`c2` > 0)
*************************** 5.row ***************************
QUERY_PLAN: End Cond: (`test`.`meters`.`c2` < 100)
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Event (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Start Cond: (`test`.`meters`.`c2` > 0)
*************************** 3.row ***************************
QUERY_PLAN: End Cond: (`test`.`meters`.`c2` < 100)
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100;
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-17 00:01:08.000 | 5 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-19 00:01:08.000 | 2022-05-21 00:01:08.000 | 5 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 1 |
taos> select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart desc;
_wstart | _wend | count(*) |
============================================================================
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 1 |
2022-05-19 00:01:08.000 | 2022-05-21 00:01:08.000 | 5 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 1 |
2022-05-15 00:01:08.000 | 2022-05-17 00:01:08.000 | 5 |
taos> select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart asc;
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-17 00:01:08.000 | 5 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-19 00:01:08.000 | 2022-05-21 00:01:08.000 | 5 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 1 |
taos> select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend desc;
_wstart | _wend | count(*) |
============================================================================
2022-05-19 00:01:08.000 | 2022-05-21 00:01:08.000 | 5 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-15 00:01:08.000 | 2022-05-17 00:01:08.000 | 5 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 1 |
taos> select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend asc;
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-17 00:01:08.000 | 5 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 1 |
2022-05-19 00:01:08.000 | 2022-05-21 00:01:08.000 | 5 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 1 |
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h)\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 4.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 5.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 4.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 5.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> select _wstart, _wend, count(*) from meters session(ts, 1h);
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc;
_wstart | _wend | count(*) |
============================================================================
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc;
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc;
_wstart | _wend | count(*) |
============================================================================
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc;
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h)\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 4.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 5.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 4.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 5.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Session (functions=3 width=24)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Window: gap=3600000
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=1 width=8 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=8)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=1 width=8 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=1 width=8
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> select _wstart, _wend, count(*) from meters session(ts, 1h);
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc;
_wstart | _wend | count(*) |
============================================================================
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc;
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc;
_wstart | _wend | count(*) |
============================================================================
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
taos> select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc;
_wstart | _wend | count(*) |
============================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 |
taos> explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2)\G;
*************************** 1.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=4 width=36)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 3.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=4 width=32)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 3.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=4 width=36)
*************************** 4.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=4 width=36)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 3.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=4 width=32)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 3.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=4 width=36)
*************************** 4.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=4 width=36)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 3.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 4.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 6.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 7.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 8.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 9.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 10.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 13.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 14.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 15.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> select _wstart, _wend, count(*), last(ts) from meters state_window(c2);
_wstart | _wend | count(*) | last(ts) |
======================================================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 | 2022-05-15 00:01:08.000 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 | 2022-05-16 00:01:08.000 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 | 2022-05-17 00:01:08.000 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 | 2022-05-18 00:01:08.000 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 | 2022-05-19 00:01:08.000 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 | 2022-05-20 00:01:08.000 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 | 2022-05-21 00:01:08.000 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 | 2022-05-22 00:01:08.000 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 | 2022-05-23 00:01:08.000 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 | 2022-05-24 00:01:08.000 |
taos> select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart desc;
_wstart | _wend | count(*) | last(ts) |
======================================================================================================
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 | 2022-05-24 00:01:08.000 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 | 2022-05-23 00:01:08.000 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 | 2022-05-22 00:01:08.000 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 | 2022-05-21 00:01:08.000 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 | 2022-05-20 00:01:08.000 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 | 2022-05-19 00:01:08.000 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 | 2022-05-18 00:01:08.000 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 | 2022-05-17 00:01:08.000 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 | 2022-05-16 00:01:08.000 |
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 | 2022-05-15 00:01:08.000 |
taos> select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart asc;
_wstart | _wend | count(*) | last(ts) |
======================================================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 | 2022-05-15 00:01:08.000 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 | 2022-05-16 00:01:08.000 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 | 2022-05-17 00:01:08.000 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 | 2022-05-18 00:01:08.000 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 | 2022-05-19 00:01:08.000 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 | 2022-05-20 00:01:08.000 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 | 2022-05-21 00:01:08.000 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 | 2022-05-22 00:01:08.000 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 | 2022-05-23 00:01:08.000 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 | 2022-05-24 00:01:08.000 |
taos> select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend desc;
_wstart | _wend | count(*) | last(ts) |
======================================================================================================
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 | 2022-05-24 00:01:08.000 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 | 2022-05-23 00:01:08.000 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 | 2022-05-22 00:01:08.000 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 | 2022-05-21 00:01:08.000 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 | 2022-05-20 00:01:08.000 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 | 2022-05-19 00:01:08.000 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 | 2022-05-18 00:01:08.000 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 | 2022-05-17 00:01:08.000 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 | 2022-05-16 00:01:08.000 |
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 | 2022-05-15 00:01:08.000 |
taos> select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc;
_wstart | _wend | count(*) | last(ts) |
======================================================================================================
2022-05-15 00:01:08.000 | 2022-05-15 00:01:08.000 | 2 | 2022-05-15 00:01:08.000 |
2022-05-16 00:01:08.000 | 2022-05-16 00:01:08.000 | 2 | 2022-05-16 00:01:08.000 |
2022-05-17 00:01:08.000 | 2022-05-17 00:01:08.000 | 2 | 2022-05-17 00:01:08.000 |
2022-05-18 00:01:08.000 | 2022-05-18 00:01:08.000 | 2 | 2022-05-18 00:01:08.000 |
2022-05-19 00:01:08.000 | 2022-05-19 00:01:08.000 | 2 | 2022-05-19 00:01:08.000 |
2022-05-20 00:01:08.000 | 2022-05-20 00:01:08.000 | 2 | 2022-05-20 00:01:08.000 |
2022-05-21 00:01:08.000 | 2022-05-21 00:01:08.000 | 2 | 2022-05-21 00:01:08.000 |
2022-05-22 00:01:08.000 | 2022-05-22 00:01:08.000 | 2 | 2022-05-22 00:01:08.000 |
2022-05-23 00:01:08.000 | 2022-05-23 00:01:08.000 | 2 | 2022-05-23 00:01:08.000 |
2022-05-24 00:01:08.000 | 2022-05-24 00:01:08.000 | 2 | 2022-05-24 00:01:08.000 |
taos> explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc, count(*) desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=asc (columns=4 width=32)
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 3.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=5 width=44)
*************************** 4.row ***************************
QUERY_PLAN: Output: columns=5 width=40
*************************** 5.row ***************************
QUERY_PLAN: Output: columns=5 width=40
*************************** 6.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 7.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 8.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 9.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 10.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 12.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 14.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 15.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 16.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 17.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 18.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 19.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, last(ts) from (select _wstart as ts, _wend, count(*), last(ts) from meters state_window(c2) order by _wend desc) interval(1h) order by _wstart desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Interval on Column ts (functions=3 width=24 input_order=desc output_order=desc )
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Time Window: interval=1h offset=0a sliding=1h
*************************** 4.row ***************************
QUERY_PLAN: Merge ResBlocks: True
*************************** 5.row ***************************
QUERY_PLAN: -> Projection (columns=3 width=24 input_order=desc )
*************************** 6.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 7.row ***************************
QUERY_PLAN: Output: Ignore Group Id: true
*************************** 8.row ***************************
QUERY_PLAN: Merge ResBlocks: True
*************************** 9.row ***************************
QUERY_PLAN: -> Sort input_order=asc output_order=desc (columns=3 width=24)
*************************** 10.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 11.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=4 width=36)
*************************** 12.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 14.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 15.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 16.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 17.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 18.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 19.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 20.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 21.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 22.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 23.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 24.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 25.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 26.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 27.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
taos> explain verbose true select _wstart, _wend, last(ts) from (select _wstart as ts, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc) interval(1h) order by _wstart desc\G;
*************************** 1.row ***************************
QUERY_PLAN: -> Interval on Column ts (functions=3 width=24 input_order=asc output_order=desc )
*************************** 2.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 3.row ***************************
QUERY_PLAN: Time Window: interval=1h offset=0a sliding=1h
*************************** 4.row ***************************
QUERY_PLAN: Merge ResBlocks: True
*************************** 5.row ***************************
QUERY_PLAN: -> Projection (columns=3 width=24 input_order=asc )
*************************** 6.row ***************************
QUERY_PLAN: Output: columns=3 width=24
*************************** 7.row ***************************
QUERY_PLAN: Output: Ignore Group Id: true
*************************** 8.row ***************************
QUERY_PLAN: Merge ResBlocks: True
*************************** 9.row ***************************
QUERY_PLAN: -> StateWindow on Column c2 (functions=4 width=36)
*************************** 10.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 11.row ***************************
QUERY_PLAN: Output: columns=4 width=32
*************************** 12.row ***************************
QUERY_PLAN: -> SortMerge (columns=2 width=12 input_order=unknown output_order=unknown)
*************************** 13.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 14.row ***************************
QUERY_PLAN: Output: Ignore Group Id: false
*************************** 15.row ***************************
QUERY_PLAN: Merge Key: _group_id asc, ts asc
*************************** 16.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 17.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 18.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 19.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 20.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
*************************** 21.row ***************************
QUERY_PLAN: -> Data Exchange 1:1 (width=12)
*************************** 22.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 23.row ***************************
QUERY_PLAN: -> Table Merge Scan on meters (columns=2 width=12 order=[asc|1 desc|0])
*************************** 24.row ***************************
QUERY_PLAN: Output: columns=2 width=12
*************************** 25.row ***************************
QUERY_PLAN: Time Range: [-9223372036854775808, 9223372036854775807]
tests/script/tsim/query/t/explain_tsorder.sql
浏览文件 @ bcadc8d8
......@@ -98,3 +98,65 @@ select last(ts), c2 as d from d1 group by c2 order by c2 asc limit 9,1;
select last(ts) as ts, c2 as d from d1 group by c2 order by ts desc, c2 asc limit 10;
select last(ts) as ts, c2 as d from d1 group by c2 order by ts desc, c2 asc limit 2,8;
select last(ts) as ts, c2 as d from d1 group by c2 order by ts desc, c2 asc limit 9,1;
explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100\G;
explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart desc\G;
explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart asc\G;
explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend desc\G;
explain verbose true select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend asc\G;
select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100;
select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart desc;
select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wstart asc;
select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend desc;
select _wstart, _wend, count(*) from meters event_window start with c2 > 0 end with c2 < 100 order by _wend asc;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h)\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc\G;
select _wstart, _wend, count(*) from meters session(ts, 1h);
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc;
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc;
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc;
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h)\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc\G;
explain verbose true select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc\G;
select _wstart, _wend, count(*) from meters session(ts, 1h);
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart desc;
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wstart asc;
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend desc;
select _wstart, _wend, count(*) from meters session(ts, 1h) order by _wend asc;
explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2)\G;
explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart desc\G;
explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart asc\G;
explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend desc\G;
explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc\G;
select _wstart, _wend, count(*), last(ts) from meters state_window(c2);
select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart desc;
select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wstart asc;
select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend desc;
select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc;
explain verbose true select _wstart, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc, count(*) desc\G;
explain verbose true select _wstart, _wend, last(ts) from (select _wstart as ts, _wend, count(*), last(ts) from meters state_window(c2) order by _wend desc) interval(1h) order by _wstart desc\G;
explain verbose true select _wstart, _wend, last(ts) from (select _wstart as ts, _wend, count(*), last(ts) from meters state_window(c2) order by _wend asc) interval(1h) order by _wstart desc\G;
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或