[td-4625]<fix>: fix bug in diff query with group by.

src/client/inc/tscUtil.h

@@ -138,6 +138,7 @@ bool isSimpleAggregateRv(SQueryInfo* pQueryInfo);
 
 bool tscNonOrderedProjectionQueryOnSTable(SQueryInfo *pQueryInfo, int32_t tableIndex);
 bool tscOrderedProjectionQueryOnSTable(SQueryInfo* pQueryInfo, int32_t tableIndex);
+bool tscIsDiffDerivQuery(SQueryInfo* pQueryInfo);
 bool tscIsProjectionQueryOnSTable(SQueryInfo* pQueryInfo, int32_t tableIndex);
 
 bool tscIsProjectionQuery(SQueryInfo* pQueryInfo);

src/client/src/tscSQLParser.c

@@ -6301,7 +6301,7 @@ static int32_t checkUpdateTagPrjFunctions(SQueryInfo* pQueryInfo, char* msg) {
   
     int16_t functionId = pExpr->base.functionId;
     if (functionId == TSDB_FUNC_TAGPRJ || functionId == TSDB_FUNC_PRJ || functionId == TSDB_FUNC_TS ||
-        functionId == TSDB_FUNC_ARITHM) {
+        functionId == TSDB_FUNC_ARITHM || functionId == TSDB_FUNC_TS_DUMMY) {
       continue;
     }
 
@@ -6407,9 +6407,14 @@ static int32_t doAddGroupbyColumnsOnDemand(SSqlCmd* pCmd, SQueryInfo* pQueryInfo
     size_t size = tscNumOfExprs(pQueryInfo);
   
     if (TSDB_COL_IS_TAG(pColIndex->flag)) {
+
+      int32_t f = TSDB_FUNC_TAG;
+      if (tscIsDiffDerivQuery(pQueryInfo)) {
+        f = TSDB_FUNC_TAGPRJ;
+      }
+
       SColumnIndex index = {.tableIndex = pQueryInfo->groupbyExpr.tableIndex, .columnIndex = colIndex};
-      SExprInfo*   pExpr = tscExprAppend(pQueryInfo, TSDB_FUNC_TAG, &index, s->type, s->bytes,
-                                          getNewResColId(pCmd), s->bytes, true);
+      SExprInfo*   pExpr = tscExprAppend(pQueryInfo, f, &index, s->type, s->bytes, getNewResColId(pCmd), s->bytes, true);
 
       memset(pExpr->base.aliasName, 0, sizeof(pExpr->base.aliasName));
       tstrncpy(pExpr->base.aliasName, s->name, sizeof(pExpr->base.aliasName));
@@ -6545,7 +6550,7 @@ int32_t doFunctionsCompatibleCheck(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, char*
     }
 
     // projection query on super table does not compatible with "group by" syntax
-    if (tscIsProjectionQuery(pQueryInfo)) {
+    if (tscIsProjectionQuery(pQueryInfo) && !(tscIsDiffDerivQuery(pQueryInfo))) {
       return invalidOperationMsg(msg, msg3);
     }
 
@@ -7745,7 +7750,8 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
   const char* msg2 = "too many tables in from clause";
   const char* msg3 = "start(end) time of query range required or time range too large";
   const char* msg4 = "interval query not supported, since the result of sub query not include valid timestamp column";
-  const char* msg9 = "only tag query not compatible with normal column filter";
+  const char* msg5 = "only tag query not compatible with normal column filter";
+  const char* msg6 = "not support stddev/percentile in outer query yet";
 
   int32_t code = TSDB_CODE_SUCCESS;
 
@@ -7786,6 +7792,15 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
       return TSDB_CODE_TSC_INVALID_OPERATION;
     }
 
+    // todo NOT support yet
+    for(int32_t i = 0; i < tscNumOfExprs(pQueryInfo); ++i) {
+      SExprInfo* pExpr = tscExprGet(pQueryInfo, i);
+      int32_t f = pExpr->base.functionId;
+      if (f == TSDB_FUNC_STDDEV || f == TSDB_FUNC_PERCT) {
+        return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg6);
+      }
+    }
+
     // validate the query filter condition info
     if (pSqlNode->pWhere != NULL) {
       if (validateWhereNode(pQueryInfo, &pSqlNode->pWhere, pSql) != TSDB_CODE_SUCCESS) {
@@ -7899,7 +7914,7 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
         for (int32_t i = 0; i < numOfCols; ++i) {
           SColumn* pCols = taosArrayGetP(pQueryInfo->colList, i);
           if (pCols->info.flist.numOfFilters > 0) {
-            return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg9);
+            return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg5);
           }
         }
       }

src/client/src/tscUtil.c

@@ -255,10 +255,14 @@ bool tscIsProjectionQuery(SQueryInfo* pQueryInfo) {
   size_t size = tscNumOfExprs(pQueryInfo);
 
   for (int32_t i = 0; i < size; ++i) {
-    int32_t functionId = tscExprGet(pQueryInfo, i)->base.functionId;
+    int32_t f = tscExprGet(pQueryInfo, i)->base.functionId;
+    if (f == TSDB_FUNC_TS_DUMMY) {
+      continue;
+    }
 
-    if (functionId != TSDB_FUNC_PRJ && functionId != TSDB_FUNC_TAGPRJ && functionId != TSDB_FUNC_TAG &&
-        functionId != TSDB_FUNC_TS && functionId != TSDB_FUNC_ARITHM) {
+    if (f != TSDB_FUNC_PRJ && f != TSDB_FUNC_TAGPRJ && f != TSDB_FUNC_TAG &&
+        f != TSDB_FUNC_TS && f != TSDB_FUNC_ARITHM && f != TSDB_FUNC_DIFF &&
+        f != TSDB_FUNC_DERIVATIVE) {
       return false;
     }
   }
@@ -266,6 +270,24 @@ bool tscIsProjectionQuery(SQueryInfo* pQueryInfo) {
   return true;
 }
 
+bool tscIsDiffDerivQuery(SQueryInfo* pQueryInfo) {
+  size_t size = tscNumOfExprs(pQueryInfo);
+
+  for (int32_t i = 0; i < size; ++i) {
+    int32_t f = tscExprGet(pQueryInfo, i)->base.functionId;
+    if (f == TSDB_FUNC_TS_DUMMY) {
+      continue;
+    }
+
+    if (f == TSDB_FUNC_DIFF || f == TSDB_FUNC_DERIVATIVE) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+
 bool tscHasColumnFilter(SQueryInfo* pQueryInfo) {
   // filter on primary timestamp column
   if (pQueryInfo->window.skey != INT64_MIN || pQueryInfo->window.ekey != INT64_MAX) {

src/query/src/qAggMain.c

@@ -5381,7 +5381,7 @@ SAggFunctionInfo aAggs[] = {{
                               "diff",
                               TSDB_FUNC_DIFF,
                               TSDB_FUNC_INVALID_ID,
-                              TSDB_FUNCSTATE_MO | TSDB_FUNCSTATE_STABLE | TSDB_FUNCSTATE_NEED_TS,
+                              TSDB_FUNCSTATE_MO | TSDB_FUNCSTATE_STABLE | TSDB_FUNCSTATE_NEED_TS | TSDB_FUNCSTATE_SELECTIVITY,
                               diff_function_setup,
                               diff_function,
                               diff_function_f,
@@ -5485,7 +5485,7 @@ SAggFunctionInfo aAggs[] = {{
                               "derivative",   // return table id and the corresponding tags for join match and subscribe
                               TSDB_FUNC_DERIVATIVE,
                               TSDB_FUNC_INVALID_ID,
-                              TSDB_FUNCSTATE_MO | TSDB_FUNCSTATE_STABLE | TSDB_FUNCSTATE_NEED_TS,
+                              TSDB_FUNCSTATE_MO | TSDB_FUNCSTATE_STABLE | TSDB_FUNCSTATE_NEED_TS | TSDB_FUNCSTATE_SELECTIVITY,
                               deriv_function_setup,
                               deriv_function,
                               noop2,

src/query/src/qExecutor.c

@@ -1682,8 +1682,6 @@ static int32_t setupQueryRuntimeEnv(SQueryRuntimeEnv *pRuntimeEnv, int32_t numOf
   SQueryAttr *pQueryAttr = pRuntimeEnv->pQueryAttr;
 
   pRuntimeEnv->prevGroupId = INT32_MIN;
-  pRuntimeEnv->enableGroupData = false;
-
   pRuntimeEnv->pQueryAttr = pQueryAttr;
 
   pRuntimeEnv->pResultRowHashTable = taosHashInit(numOfTables, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
@@ -4118,6 +4116,7 @@ int32_t doInitQInfo(SQInfo* pQInfo, STSBuf* pTsBuf, void* tsdb, void* sourceOptr
   pQueryAttr->interBufSize = getOutputInterResultBufSize(pQueryAttr);
 
   pRuntimeEnv->groupResInfo.totalGroup = (int32_t) (pQueryAttr->stableQuery? GET_NUM_OF_TABLEGROUP(pRuntimeEnv):0);
+  pRuntimeEnv->enableGroupData = false;
 
   pRuntimeEnv->pQueryAttr = pQueryAttr;
   pRuntimeEnv->pTsBuf = pTsBuf;

tests/script/general/parser/nestquery.sim

@@ -147,8 +147,57 @@ if $data02 != @nest_tb0@ then
 endi
 
 print ===================> nest query interval
+sql_error select ts, avg(c1) from (select ts, c1 from nest_tb0);
 
+sql select avg(c1) from (select * from nest_tb0) interval(3d)
+if $rows != 3 then
+  return -1
+endi
+
+if $data00 != @20-09-14 00:00:00.000@  then
+  return -1
+endi
+
+if $data01 != 49.222222222 then
+  return -1
+endi
+
+if $data10 != @20-09-17 00:00:00.000@  then
+  print expect 20-09-17 00:00:00.000, actual: $data10
+  return -1
+endi
+
+if $data11 != 49.685185185 then
+  return -1
+endi
+
+if $data20 != @20-09-20 00:00:00.000@  then
+  return -1
+endi
+
+if $data21 != 49.500000000 then
+  return -1
+endi
+
+#define TSDB_FUNC_APERCT       7
+#define TSDB_FUNC_LAST_ROW     10
+#define TSDB_FUNC_TWA          14
+#define TSDB_FUNC_LEASTSQR     15
+#define TSDB_FUNC_ARITHM       23
+#define TSDB_FUNC_DIFF         24
+#define TSDB_FUNC_INTERP       28
+#define TSDB_FUNC_RATE         29
+#define TSDB_FUNC_IRATE        30
+#define TSDB_FUNC_DERIVATIVE   32
+
+sql_error select stddev(c1) from (select c1 from nest_tb0);
+sql_error select percentile(c1, 20) from (select * from nest_tb0);
+
+sql select avg(c1),sum(c2), max(c3), min(c4), count(*), first(c7), last(c7),spread(c6) from (select * from nest_tb0) interval(1d);
+
+sql select top(x, 20) from (select c1 x from nest_tb0);
 
+sql select bottom(x, 20) from (select c1 x from nest_tb0)
 
 print ===================> complex query