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T
TDengine
提交 1dd928dd 编写于 作者: P Ping Xiao
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Merge branch 'develop' into xiaoping/add_test_case

上级 bc18d38c 3d2706fe
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documentation20/cn/02.getting-started/docs.md
浏览文件 @ 1dd928dd
...@@ -179,19 +179,20 @@ taos> select avg(f1), max(f2), min(f3) from test.t10 interval(10s); ...@@ -179,19 +179,20 @@ taos> select avg(f1), max(f2), min(f3) from test.t10 interval(10s);
### TDengine服务器支持的平台列表 ### TDengine服务器支持的平台列表
| | **CentOS 6/7/8** | **Ubuntu 16/18/20** | **Other Linux** | **统信 UOS** | **银河/中标麒麟** | **凝思 V60/V80** | | | **CentOS 6/7/8** | **Ubuntu 16/18/20** | **Other Linux** | **统信 UOS** | **银河/中标麒麟** | **凝思 V60/V80** | **华为 EulerOS** |
| -------------- | --------------------- | ------------------------ | --------------- | --------------- | ------------------------- | --------------------- | | -------------- | --------------------- | ------------------------ | --------------- | --------------- | ------------------------- | --------------------- | --------------------- |
| X64 | ● | ● | | ○ | ● | ● | | X64 | ● | ● | | ○ | ● | ● | ● |
| 树莓派 ARM32 | | ● | ● | | | | | 树莓派 ARM32 | | ● | ● | | | | |
| 龙芯 MIPS64 | | | ● | | | | | 龙芯 MIPS64 | | | ● | | | | |
| 鲲鹏 ARM64 | | ○ | ○ | | ● | | | 鲲鹏 ARM64 | | ○ | ○ | | ● | | |
| 申威 Alpha64 | | | ○ | ● | | | | 申威 Alpha64 | | | ○ | ● | | | |
| 飞腾 ARM64 | | ○ 优麒麟 | | | | | | 飞腾 ARM64 | | ○ 优麒麟 | | | | | |
| 海光 X64 | ● | ● | ● | ○ | ● | ● | | 海光 X64 | ● | ● | ● | ○ | ● | ● | |
| 瑞芯微 ARM64/32 | | | ○ | | | | | 瑞芯微 ARM64/32 | | | ○ | | | | |
| 全志 ARM64/32 | | | ○ | | | | | 全志 ARM64/32 | | | ○ | | | | |
| 炬力 ARM64/32 | | | ○ | | | | | 炬力 ARM64/32 | | | ○ | | | | |
| TI ARM32 | | | ○ | | | | | TI ARM32 | | | ○ | | | | |
| 华为云 ARM64 | | | | | | | ● |
注： ● 表示经过官方测试验证， ○ 表示非官方测试验证。 注： ● 表示经过官方测试验证， ○ 表示非官方测试验证。
......
src/query/src/qExecutor.c
浏览文件 @ 1dd928dd
...@@ -200,6 +200,7 @@ static bool isPointInterpoQuery(SQuery *pQuery); ...@@ -200,6 +200,7 @@ static bool isPointInterpoQuery(SQuery *pQuery);
static void setResultBufSize(SQuery* pQuery, SRspResultInfo* pResultInfo); static void setResultBufSize(SQuery* pQuery, SRspResultInfo* pResultInfo);
static void setCtxTagForJoin(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx, SExprInfo* pExprInfo, void* pTable); static void setCtxTagForJoin(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx, SExprInfo* pExprInfo, void* pTable);
static void setParamForStableStddev(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx, int32_t numOfOutput, SExprInfo* pExpr); static void setParamForStableStddev(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx, int32_t numOfOutput, SExprInfo* pExpr);
static void setParamForStableStddevByColData(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx, int32_t numOfOutput, SExprInfo* pExpr, char* val, int16_t bytes);
static void doSetTableGroupOutputBuf(SQueryRuntimeEnv* pRuntimeEnv, SResultRowInfo* pResultRowInfo, static void doSetTableGroupOutputBuf(SQueryRuntimeEnv* pRuntimeEnv, SResultRowInfo* pResultRowInfo,
SQLFunctionCtx* pCtx, int32_t* rowCellInfoOffset, int32_t numOfOutput, SQLFunctionCtx* pCtx, int32_t* rowCellInfoOffset, int32_t numOfOutput,
int32_t groupIndex); int32_t groupIndex);
...@@ -1330,6 +1331,7 @@ static void doHashGroupbyAgg(SOperatorInfo* pOperator, SGroupbyOperatorInfo *pIn ...@@ -1330,6 +1331,7 @@ static void doHashGroupbyAgg(SOperatorInfo* pOperator, SGroupbyOperatorInfo *pIn
SColumnInfoData* pColInfoData = taosArrayGet(pSDataBlock->pDataBlock, pInfo->colIndex); SColumnInfoData* pColInfoData = taosArrayGet(pSDataBlock->pDataBlock, pInfo->colIndex);
int16_t bytes = pColInfoData->info.bytes; int16_t bytes = pColInfoData->info.bytes;
int16_t type = pColInfoData->info.type; int16_t type = pColInfoData->info.type;
SQuery *pQuery = pRuntimeEnv->pQuery;
if (type == TSDB_DATA_TYPE_FLOAT || type == TSDB_DATA_TYPE_DOUBLE) { if (type == TSDB_DATA_TYPE_FLOAT || type == TSDB_DATA_TYPE_DOUBLE) {
qError("QInfo:%"PRIu64" group by not supported on double/float columns, abort", GET_QID(pRuntimeEnv)); qError("QInfo:%"PRIu64" group by not supported on double/float columns, abort", GET_QID(pRuntimeEnv));
...@@ -1350,6 +1352,10 @@ static void doHashGroupbyAgg(SOperatorInfo* pOperator, SGroupbyOperatorInfo *pIn ...@@ -1350,6 +1352,10 @@ static void doHashGroupbyAgg(SOperatorInfo* pOperator, SGroupbyOperatorInfo *pIn
memcpy(pInfo->prevData, val, bytes); memcpy(pInfo->prevData, val, bytes);
if (pQuery->stableQuery && pQuery->stabledev && (pRuntimeEnv->prevResult != NULL)) {
setParamForStableStddevByColData(pRuntimeEnv, pInfo->binfo.pCtx, pOperator->numOfOutput, pOperator->pExpr, val, bytes);
}
int32_t ret = int32_t ret =
setGroupResultOutputBuf(pRuntimeEnv, pInfo, pOperator->numOfOutput, val, type, bytes, item->groupIndex); setGroupResultOutputBuf(pRuntimeEnv, pInfo, pOperator->numOfOutput, val, type, bytes, item->groupIndex);
if (ret != TSDB_CODE_SUCCESS) { // null data, too many state code if (ret != TSDB_CODE_SUCCESS) { // null data, too many state code
...@@ -3396,6 +3402,42 @@ void setParamForStableStddev(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx ...@@ -3396,6 +3402,42 @@ void setParamForStableStddev(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx
} }
void setParamForStableStddevByColData(SQueryRuntimeEnv* pRuntimeEnv, SQLFunctionCtx* pCtx, int32_t numOfOutput, SExprInfo* pExpr, char* val, int16_t bytes) {
SQuery* pQuery = pRuntimeEnv->pQuery;
int32_t numOfExprs = pQuery->numOfOutput;
for(int32_t i = 0; i < numOfExprs; ++i) {
SExprInfo* pExprInfo = &(pExpr[i]);
if (pExprInfo->base.functionId != TSDB_FUNC_STDDEV_DST) {
continue;
}
SSqlFuncMsg* pFuncMsg = &pExprInfo->base;
pCtx[i].param[0].arr = NULL;
pCtx[i].param[0].nType = TSDB_DATA_TYPE_INT; // avoid freeing the memory by setting the type to be int
// TODO use hash to speedup this loop
int32_t numOfGroup = (int32_t)taosArrayGetSize(pRuntimeEnv->prevResult);
for (int32_t j = 0; j < numOfGroup; ++j) {
SInterResult* p = taosArrayGet(pRuntimeEnv->prevResult, j);
if (bytes == 0 || memcmp(p->tags, val, bytes) == 0) {
int32_t numOfCols = (int32_t)taosArrayGetSize(p->pResult);
for (int32_t k = 0; k < numOfCols; ++k) {
SStddevInterResult* pres = taosArrayGet(p->pResult, k);
if (pres->colId == pFuncMsg->colInfo.colId) {
pCtx[i].param[0].arr = pres->pResult;
break;
}
}
}
}
}
}
/* /*
* There are two cases to handle: * There are two cases to handle:
* *
......
tests/examples/go/taosdemo.go
浏览文件 @ 1dd928dd
...@@ -16,45 +16,47 @@ package main ...@@ -16,45 +16,47 @@ package main
import ( import (
"database/sql" "database/sql"
"flag"
"fmt" "fmt"
_ "github.com/taosdata/driver-go/taosSql" "math/rand"
"os" "os"
"sync"
"runtime" "runtime"
"strconv" "strconv"
"sync"
"time" "time"
"flag"
"math/rand" _ "github.com/taosdata/driver-go/taosSql"
//"golang.org/x/sys/unix" //"golang.org/x/sys/unix"
) )
const ( const (
maxLocationSize = 32 maxLocationSize = 32
maxSqlBufSize = 65480 //maxSqlBufSize = 65480
) )
var locations = [maxLocationSize]string { var locations = [maxLocationSize]string{
"Beijing", "Shanghai", "Guangzhou", "Shenzhen", "Beijing", "Shanghai", "Guangzhou", "Shenzhen",
"HangZhou", "Tianjin", "Wuhan", "Changsha", "HangZhou", "Tianjin", "Wuhan", "Changsha",
"Nanjing", "Xian"} "Nanjing", "Xian"}
type config struct { type config struct {
hostName string hostName string
serverPort int serverPort int
user string user string
password string password string
dbName string dbName string
supTblName string supTblName string
tablePrefix string tablePrefix string
numOftables int numOftables int
numOfRecordsPerTable int numOfRecordsPerTable int
numOfRecordsPerReq int numOfRecordsPerReq int
numOfThreads int numOfThreads int
startTimestamp string startTimestamp string
startTs int64 startTs int64
keep int keep int
days int days int
} }
var configPara config var configPara config
...@@ -62,7 +64,7 @@ var taosDriverName = "taosSql" ...@@ -62,7 +64,7 @@ var taosDriverName = "taosSql"
var url string var url string
func init() { func init() {
flag.StringVar(&configPara.hostName, "h", "127.0.0.1","The host to connect to TDengine server.") flag.StringVar(&configPara.hostName, "h", "127.0.0.1", "The host to connect to TDengine server.")
flag.IntVar(&configPara.serverPort, "p", 6030, "The TCP/IP port number to use for the connection to TDengine server.") flag.IntVar(&configPara.serverPort, "p", 6030, "The TCP/IP port number to use for the connection to TDengine server.")
flag.StringVar(&configPara.user, "u", "root", "The TDengine user name to use when connecting to the server.") flag.StringVar(&configPara.user, "u", "root", "The TDengine user name to use when connecting to the server.")
flag.StringVar(&configPara.password, "P", "taosdata", "The password to use when connecting to the server.") flag.StringVar(&configPara.password, "P", "taosdata", "The password to use when connecting to the server.")
...@@ -80,14 +82,14 @@ func init() { ...@@ -80,14 +82,14 @@ func init() {
configPara.supTblName = "meters" configPara.supTblName = "meters"
startTs, err := time.ParseInLocation("2006-01-02 15:04:05", configPara.startTimestamp, time.Local) startTs, err := time.ParseInLocation("2006-01-02 15:04:05", configPara.startTimestamp, time.Local)
if err==nil { if err == nil {
configPara.startTs = startTs.UnixNano() / 1e6 configPara.startTs = startTs.UnixNano() / 1e6
} }
} }
func printAllArgs() { func printAllArgs() {
fmt.Printf("\n============= args parse result: =============\n") fmt.Printf("\n============= args parse result: =============\n")
fmt.Printf("hostName: %v\n", configPara.hostName) fmt.Printf("hostName: %v\n", configPara.hostName)
fmt.Printf("serverPort: %v\n", configPara.serverPort) fmt.Printf("serverPort: %v\n", configPara.serverPort)
fmt.Printf("usr: %v\n", configPara.user) fmt.Printf("usr: %v\n", configPara.user)
fmt.Printf("password: %v\n", configPara.password) fmt.Printf("password: %v\n", configPara.password)
...@@ -104,10 +106,10 @@ func printAllArgs() { ...@@ -104,10 +106,10 @@ func printAllArgs() {
func main() { func main() {
printAllArgs() printAllArgs()
fmt.Printf("Please press enter key to continue....\n") fmt.Printf("Please press enter key to continue....\n")
fmt.Scanln() _, _ = fmt.Scanln()
url = "root:taosdata@/tcp(" + configPara.hostName + ":" + strconv.Itoa(configPara.serverPort) + ")/" url = "root:taosdata@/tcp(" + configPara.hostName + ":" + strconv.Itoa(configPara.serverPort) + ")/"
//url = fmt.Sprintf("%s:%s@/tcp(%s:%d)/%s?interpolateParams=true", configPara.user, configPara.password, configPara.hostName, configPara.serverPort, configPara.dbName) //url = fmt.Sprintf("%s:%s@/tcp(%s:%d)/%s?interpolateParams=true", configPara.user, configPara.password, configPara.hostName, configPara.serverPort, configPara.dbName)
// open connect to taos server // open connect to taos server
//db, err := sql.Open(taosDriverName, url) //db, err := sql.Open(taosDriverName, url)
//if err != nil { //if err != nil {
...@@ -115,7 +117,7 @@ func main() { ...@@ -115,7 +117,7 @@ func main() {
// os.Exit(1) // os.Exit(1)
//} //}
//defer db.Close() //defer db.Close()
rand.Seed(time.Now().Unix()) rand.Seed(time.Now().Unix())
createDatabase(configPara.dbName, configPara.supTblName) createDatabase(configPara.dbName, configPara.supTblName)
fmt.Printf("======== create database success! ========\n\n") fmt.Printf("======== create database success! ========\n\n")
...@@ -138,7 +140,7 @@ func main() { ...@@ -138,7 +140,7 @@ func main() {
func createDatabase(dbName string, supTblName string) { func createDatabase(dbName string, supTblName string) {
db, err := sql.Open(taosDriverName, url) db, err := sql.Open(taosDriverName, url)
if err != nil { if err != nil {
fmt.Println("Open database error: %s\n", err) fmt.Printf("Open database error: %s\n", err)
os.Exit(1) os.Exit(1)
} }
defer db.Close() defer db.Close()
...@@ -165,27 +167,27 @@ func createDatabase(dbName string, supTblName string) { ...@@ -165,27 +167,27 @@ func createDatabase(dbName string, supTblName string) {
checkErr(err, sqlStr) checkErr(err, sqlStr)
} }
func multiThreadCreateTable(threads int, ntables int, dbName string, tablePrefix string) { func multiThreadCreateTable(threads int, nTables int, dbName string, tablePrefix string) {
st := time.Now().UnixNano() st := time.Now().UnixNano()
if (threads < 1) { if threads < 1 {
threads = 1; threads = 1
} }
a := ntables / threads; a := nTables / threads
if (a < 1) { if a < 1 {
threads = ntables; threads = nTables
a = 1; a = 1
} }
b := ntables % threads; b := nTables % threads
last := 0; last := 0
endTblId := 0 endTblId := 0
wg := sync.WaitGroup{} wg := sync.WaitGroup{}
for i := 0; i < threads; i++ { for i := 0; i < threads; i++ {
startTblId := last startTblId := last
if (i < b ) { if i < b {
endTblId = last + a endTblId = last + a
} else { } else {
endTblId = last + a - 1 endTblId = last + a - 1
...@@ -206,42 +208,43 @@ func createTable(dbName string, childTblPrefix string, startTblId int, endTblId ...@@ -206,42 +208,43 @@ func createTable(dbName string, childTblPrefix string, startTblId int, endTblId
db, err := sql.Open(taosDriverName, url) db, err := sql.Open(taosDriverName, url)
if err != nil { if err != nil {
fmt.Println("Open database error: %s\n", err) fmt.Printf("Open database error: %s\n", err)
os.Exit(1) os.Exit(1)
} }
defer db.Close() defer db.Close()
for i := startTblId; i <= endTblId; i++ { for i := startTblId; i <= endTblId; i++ {
sqlStr := "create table if not exists " + dbName + "." + childTblPrefix + strconv.Itoa(i) + " using " + dbName + ".meters tags('" + locations[i%maxLocationSize] + "', " + strconv.Itoa(i) + ");" sqlStr := "create table if not exists " + dbName + "." + childTblPrefix + strconv.Itoa(i) + " using " + dbName + ".meters tags('" + locations[i%maxLocationSize] + "', " + strconv.Itoa(i) + ");"
//fmt.Printf("sqlStr: %v\n", sqlStr) //fmt.Printf("sqlStr: %v\n", sqlStr)
_, err = db.Exec(sqlStr) _, err = db.Exec(sqlStr)
checkErr(err, sqlStr) checkErr(err, sqlStr)
} }
wg.Done() wg.Done()
runtime.Goexit() runtime.Goexit()
} }
func generateRowData(ts int64) string { func generateRowData(ts int64) string {
voltage := rand.Int() % 1000 voltage := rand.Int() % 1000
current := 200 + rand.Float32() current := 200 + rand.Float32()
phase := rand.Float32() phase := rand.Float32()
values := "( " + strconv.FormatInt(ts, 10) + ", " + strconv.FormatFloat(float64(current), 'f', 6, 64) + ", " + strconv.Itoa(voltage) + ", " + strconv.FormatFloat(float64(phase), 'f', 6, 64) + " ) " values := "( " + strconv.FormatInt(ts, 10) + ", " + strconv.FormatFloat(float64(current), 'f', 6, 64) + ", " + strconv.Itoa(voltage) + ", " + strconv.FormatFloat(float64(phase), 'f', 6, 64) + " ) "
return values return values
} }
func insertData(dbName string, childTblPrefix string, startTblId int, endTblId int, wg *sync.WaitGroup) { func insertData(dbName string, childTblPrefix string, startTblId int, endTblId int, wg *sync.WaitGroup) {
//fmt.Printf("subThread[%d]: insert data to table from %d to %d \n", unix.Gettid(), startTblId, endTblId) //fmt.Printf("subThread[%d]: insert data to table from %d to %d \n", unix.Gettid(), startTblId, endTblId)
// windows.GetCurrentThreadId() // windows.GetCurrentThreadId()
db, err := sql.Open(taosDriverName, url) db, err := sql.Open(taosDriverName, url)
if err != nil { if err != nil {
fmt.Println("Open database error: %s\n", err) fmt.Printf("Open database error: %s\n", err)
os.Exit(1) os.Exit(1)
} }
defer db.Close() defer db.Close()
tmpTs := configPara.startTs; tmpTs := configPara.startTs
//rand.New(rand.NewSource(time.Now().UnixNano())) //rand.New(rand.NewSource(time.Now().UnixNano()))
for tID := startTblId; tID <= endTblId; tID++{ for tID := startTblId; tID <= endTblId; tID++ {
totalNum := 0 totalNum := 0
for { for {
sqlStr := "insert into " + dbName + "." + childTblPrefix + strconv.Itoa(tID) + " values " sqlStr := "insert into " + dbName + "." + childTblPrefix + strconv.Itoa(tID) + " values "
...@@ -249,13 +252,13 @@ func insertData(dbName string, childTblPrefix string, startTblId int, endTblId i ...@@ -249,13 +252,13 @@ func insertData(dbName string, childTblPrefix string, startTblId int, endTblId i
for { for {
tmpTs += 1000 tmpTs += 1000
valuesOfRow := generateRowData(tmpTs) valuesOfRow := generateRowData(tmpTs)
currRowNum += 1 currRowNum += 1
totalNum += 1 totalNum += 1
sqlStr = fmt.Sprintf("%s %s", sqlStr, valuesOfRow) sqlStr = fmt.Sprintf("%s %s", sqlStr, valuesOfRow)
if (currRowNum >= configPara.numOfRecordsPerReq || totalNum >= configPara.numOfRecordsPerTable) { if currRowNum >= configPara.numOfRecordsPerReq || totalNum >= configPara.numOfRecordsPerTable {
break break
} }
} }
...@@ -265,12 +268,12 @@ func insertData(dbName string, childTblPrefix string, startTblId int, endTblId i ...@@ -265,12 +268,12 @@ func insertData(dbName string, childTblPrefix string, startTblId int, endTblId i
count, err := res.RowsAffected() count, err := res.RowsAffected()
checkErr(err, "rows affected") checkErr(err, "rows affected")
if (count != int64(currRowNum)) { if count != int64(currRowNum) {
fmt.Printf("insert data, expect affected:%d, actual:%d\n", currRowNum, count) fmt.Printf("insert data, expect affected:%d, actual:%d\n", currRowNum, count)
os.Exit(1) os.Exit(1)
} }
if (totalNum >= configPara.numOfRecordsPerTable) { if totalNum >= configPara.numOfRecordsPerTable {
break break
} }
} }
...@@ -279,44 +282,46 @@ func insertData(dbName string, childTblPrefix string, startTblId int, endTblId i ...@@ -279,44 +282,46 @@ func insertData(dbName string, childTblPrefix string, startTblId int, endTblId i
wg.Done() wg.Done()
runtime.Goexit() runtime.Goexit()
} }
func multiThreadInsertData(threads int, ntables int, dbName string, tablePrefix string) {
func multiThreadInsertData(threads int, nTables int, dbName string, tablePrefix string) {
st := time.Now().UnixNano() st := time.Now().UnixNano()
if (threads < 1) { if threads < 1 {
threads = 1; threads = 1
} }
a := ntables / threads; a := nTables / threads
if (a < 1) { if a < 1 {
threads = ntables; threads = nTables
a = 1; a = 1
} }
b := ntables % threads; b := nTables % threads
last := 0; last := 0
endTblId := 0 endTblId := 0
wg := sync.WaitGroup{} wg := sync.WaitGroup{}
for i := 0; i < threads; i++ { for i := 0; i < threads; i++ {
startTblId := last startTblId := last
if (i < b ) { if i < b {
endTblId = last + a endTblId = last + a
} else { } else {
endTblId = last + a - 1 endTblId = last + a - 1
} }
last = endTblId + 1 last = endTblId + 1
wg.Add(1) wg.Add(1)
go insertData(dbName, tablePrefix, startTblId , endTblId, &wg) go insertData(dbName, tablePrefix, startTblId, endTblId, &wg)
} }
wg.Wait() wg.Wait()
et := time.Now().UnixNano() et := time.Now().UnixNano()
fmt.Printf("insert data spent duration: %6.6fs\n", (float32(et-st))/1e9) fmt.Printf("insert data spent duration: %6.6fs\n", (float32(et-st))/1e9)
} }
func selectTest(dbName string, tbPrefix string, supTblName string){
func selectTest(dbName string, tbPrefix string, supTblName string) {
db, err := sql.Open(taosDriverName, url) db, err := sql.Open(taosDriverName, url)
if err != nil { if err != nil {
fmt.Println("Open database error: %s\n", err) fmt.Printf("Open database error: %s\n", err)
os.Exit(1) os.Exit(1)
} }
defer db.Close() defer db.Close()
...@@ -332,12 +337,12 @@ func selectTest(dbName string, tbPrefix string, supTblName string){ ...@@ -332,12 +337,12 @@ func selectTest(dbName string, tbPrefix string, supTblName string){
fmt.Printf("query sql: %s\n", sqlStr) fmt.Printf("query sql: %s\n", sqlStr)
for rows.Next() { for rows.Next() {
var ( var (
ts string ts string
current float32 current float32
voltage int voltage int
phase float32 phase float32
location string location string
groupid int groupid int
) )
err := rows.Scan(&ts, &current, &voltage, &phase, &location, &groupid) err := rows.Scan(&ts, &current, &voltage, &phase, &location, &groupid)
if err != nil { if err != nil {
...@@ -352,7 +357,7 @@ func selectTest(dbName string, tbPrefix string, supTblName string){ ...@@ -352,7 +357,7 @@ func selectTest(dbName string, tbPrefix string, supTblName string){
} }
// select sql 2 // select sql 2
sqlStr = "select avg(voltage), min(voltage), max(voltage) from " + dbName + "." + tbPrefix + strconv.Itoa( rand.Int() % configPara.numOftables) sqlStr = "select avg(voltage), min(voltage), max(voltage) from " + dbName + "." + tbPrefix + strconv.Itoa(rand.Int()%configPara.numOftables)
rows, err = db.Query(sqlStr) rows, err = db.Query(sqlStr)
checkErr(err, sqlStr) checkErr(err, sqlStr)
...@@ -360,9 +365,9 @@ func selectTest(dbName string, tbPrefix string, supTblName string){ ...@@ -360,9 +365,9 @@ func selectTest(dbName string, tbPrefix string, supTblName string){
fmt.Printf("\nquery sql: %s\n", sqlStr) fmt.Printf("\nquery sql: %s\n", sqlStr)
for rows.Next() { for rows.Next() {
var ( var (
voltageAvg float32 voltageAvg float32
voltageMin int voltageMin int
voltageMax int voltageMax int
) )
err := rows.Scan(&voltageAvg, &voltageMin, &voltageMax) err := rows.Scan(&voltageAvg, &voltageMin, &voltageMax)
if err != nil { if err != nil {
...@@ -385,10 +390,10 @@ func selectTest(dbName string, tbPrefix string, supTblName string){ ...@@ -385,10 +390,10 @@ func selectTest(dbName string, tbPrefix string, supTblName string){
fmt.Printf("\nquery sql: %s\n", sqlStr) fmt.Printf("\nquery sql: %s\n", sqlStr)
for rows.Next() { for rows.Next() {
var ( var (
lastTs string lastTs string
lastCurrent float32 lastCurrent float32
lastVoltage int lastVoltage int
lastPhase float32 lastPhase float32
) )
err := rows.Scan(&lastTs, &lastCurrent, &lastVoltage, &lastPhase) err := rows.Scan(&lastTs, &lastCurrent, &lastVoltage, &lastPhase)
if err != nil { if err != nil {
......
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