[td-1844]

src/client/inc/tscUtil.h

@@ -75,6 +75,7 @@ typedef struct SJoinSupporter {
   SArray*         exprList;
   SFieldInfo      fieldsInfo;
   STagCond        tagCond;
+  SSqlGroupbyExpr groupInfo;       // group by info
   struct STSBuf*  pTSBuf;          // the TSBuf struct that holds the compressed timestamp array
   FILE*           f;               // temporary file in order to create TSBuf
   char            path[PATH_MAX];  // temporary file path, todo dynamic allocate memory
@@ -265,6 +266,7 @@ void     addGroupInfoForSubquery(SSqlObj* pParentObj, SSqlObj* pSql, int32_t sub
 void doAddGroupColumnForSubquery(SQueryInfo* pQueryInfo, int32_t tagIndex);
 
 int16_t tscGetJoinTagColIdByUid(STagCond* pTagCond, uint64_t uid);
+int16_t tscGetTagColIndexById(STableMeta* pTableMeta, int16_t colId);
 
 void tscPrintSelectClause(SSqlObj* pSql, int32_t subClauseIndex);
 

src/client/inc/tschemautil.h

@@ -77,7 +77,7 @@ SSchema *tscGetTableColumnSchema(const STableMeta *pMeta, int32_t colIndex);
  * @param colId
  * @return
  */
-SSchema* tscGetTableColumnSchemaById(STableMeta* pTableMeta, int16_t colId);
+SSchema* tscGetColumnSchemaById(STableMeta* pTableMeta, int16_t colId);
 
 /**
  * check if the schema is valid or not, including following aspects:

src/client/src/tscSQLParser.c

@@ -5286,15 +5286,18 @@ void addGroupInfoForSubquery(SSqlObj* pParentObj, SSqlObj* pSql, int32_t subClau
     SSqlExpr* pExpr = tscSqlExprGet(pQueryInfo, (int32_t)size - 1);
 
     if (pExpr->functionId != TSDB_FUNC_TAG) {
-      STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, tableIndex);
+      STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pParentQueryInfo, tableIndex);
-      int16_t         columnInfo = tscGetJoinTagColIdByUid(&pQueryInfo->tagCond, pTableMetaInfo->pTableMeta->id.uid);
+
-      SColumnIndex    index = {.tableIndex = 0, .columnIndex = columnInfo};
+      int16_t colId = tscGetJoinTagColIdByUid(&pQueryInfo->tagCond, pTableMetaInfo->pTableMeta->id.uid);
-      SSchema*        pSchema = tscGetTableTagSchema(pTableMetaInfo->pTableMeta);
+
+      SSchema* pTagSchema = tscGetColumnSchemaById(pTableMetaInfo->pTableMeta, colId);
+      int16_t colIndex = tscGetTagColIndexById(pTableMetaInfo->pTableMeta, colId);
+      SColumnIndex    index = {.tableIndex = 0, .columnIndex = colIndex};
+
+      char*   name = pTagSchema->name;
+      int16_t type = pTagSchema->type;
+      int16_t bytes = pTagSchema->bytes;
 
-      int16_t type = pSchema[index.columnIndex].type;
-      int16_t bytes = pSchema[index.columnIndex].bytes;
-      char*   name = pSchema[index.columnIndex].name;
-  
       pExpr = tscSqlExprAppend(pQueryInfo, TSDB_FUNC_TAG, &index, type, bytes, bytes, true);
       pExpr->colInfo.flag = TSDB_COL_TAG;
 

src/client/src/tscSchemaUtil.c

@@ -118,7 +118,7 @@ SSchema* tscGetTableColumnSchema(const STableMeta* pTableMeta, int32_t colIndex)
 }
 
 // TODO for large number of columns, employ the binary search method
-SSchema* tscGetTableColumnSchemaById(STableMeta* pTableMeta, int16_t colId) {
+SSchema* tscGetColumnSchemaById(STableMeta* pTableMeta, int16_t colId) {
   STableComInfo tinfo = tscGetTableInfo(pTableMeta);
 
   for(int32_t i = 0; i < tinfo.numOfColumns + tinfo.numOfTags; ++i) {

src/client/src/tscSubquery.c

@@ -320,11 +320,8 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
     pQueryInfo->colList = pSupporter->colList;
     pQueryInfo->exprList = pSupporter->exprList;
     pQueryInfo->fieldsInfo = pSupporter->fieldsInfo;
+    pQueryInfo->groupbyExpr = pSupporter->groupInfo;
 
-    pSupporter->exprList = NULL;
-    pSupporter->colList = NULL;
-    memset(&pSupporter->fieldsInfo, 0, sizeof(SFieldInfo));
-  
     SQueryInfo *pNewQueryInfo = tscGetQueryInfoDetail(&pNew->cmd, 0);
     assert(pNew->subState.numOfSub == 0 && pNew->cmd.numOfClause == 1 && pNewQueryInfo->numOfTables == 1);
   
@@ -332,7 +329,12 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
   
     STableMetaInfo *pTableMetaInfo = tscGetMetaInfo(pNewQueryInfo, 0);
     pTableMetaInfo->pVgroupTables = pSupporter->pVgroupTables;
+
+    pSupporter->exprList = NULL;
+    pSupporter->colList = NULL;
     pSupporter->pVgroupTables = NULL;
+    memset(&pSupporter->fieldsInfo, 0, sizeof(SFieldInfo));
+    memset(&pSupporter->groupInfo, 0, sizeof(SSqlGroupbyExpr));
 
     /*
      * When handling the projection query, the offset value will be modified for table-table join, which is changed
@@ -612,7 +614,7 @@ static int32_t getIntersectionOfTableTuple(SQueryInfo* pQueryInfo, SSqlObj* pPar
   STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);
   int16_t tagColId = tscGetJoinTagColIdByUid(&pQueryInfo->tagCond, pTableMetaInfo->pTableMeta->id.uid);
 
-  SSchema* pColSchema = tscGetTableColumnSchemaById(pTableMetaInfo->pTableMeta, tagColId);
+  SSchema* pColSchema = tscGetColumnSchemaById(pTableMetaInfo->pTableMeta, tagColId);
 
   // int16_t for padding
   int32_t size = p1->tagSize - sizeof(int16_t);
@@ -1341,6 +1343,9 @@ int32_t tscCreateJoinSubquery(SSqlObj *pSql, int16_t tableIndex, SJoinSupporter
       return TSDB_CODE_TSC_OUT_OF_MEMORY;
     }
 
+    pSupporter->groupInfo = pNewQueryInfo->groupbyExpr;
+    memset(&pNewQueryInfo->groupbyExpr, 0, sizeof(SSqlGroupbyExpr));
+
     pNew->cmd.numOfCols = 0;
     pNewQueryInfo->interval.interval = 0;
     pSupporter->limit = pNewQueryInfo->limit;
@@ -1361,17 +1366,9 @@ int32_t tscCreateJoinSubquery(SSqlObj *pSql, int16_t tableIndex, SJoinSupporter
       assert(pTagCond->joinInfo.hasJoin);
 
       int32_t tagColId = tscGetJoinTagColIdByUid(pTagCond, pTableMetaInfo->pTableMeta->id.uid);
-      SSchema* s = tscGetTableColumnSchemaById(pTableMetaInfo->pTableMeta, tagColId);
+      SSchema* s = tscGetColumnSchemaById(pTableMetaInfo->pTableMeta, tagColId);
 
-      // get the tag colId column index
+      colIndex.columnIndex = tscGetTagColIndexById(pTableMetaInfo->pTableMeta, tagColId);
-      int32_t numOfTags = tscGetNumOfTags(pTableMetaInfo->pTableMeta);
-      SSchema* pSchema = tscGetTableTagSchema(pTableMetaInfo->pTableMeta);
-      for(int32_t i = 0; i < numOfTags; ++i) {
-        if (pSchema[i].colId == tagColId) {
-          colIndex.columnIndex = i;
-          break;
-        }
-      }
 
       int16_t bytes = 0;
       int16_t type  = 0;
@@ -2193,7 +2190,8 @@ static void doBuildResFromSubqueries(SSqlObj* pSql) {
     numOfRes = (int32_t)(MIN(numOfRes, remain));
   }
 
-  if (numOfRes == 0) {
+  if (numOfRes == 0) {  // no result any more, free all subquery objects
+    freeJoinSubqueryObj(pSql);
     return;
   }
 

src/client/src/tscUtil.c

@@ -1665,6 +1665,7 @@ static void freeQueryInfoImpl(SQueryInfo* pQueryInfo) {
   if (pQueryInfo->groupbyExpr.columnInfo != NULL) {
     taosArrayDestroy(pQueryInfo->groupbyExpr.columnInfo);
     pQueryInfo->groupbyExpr.columnInfo = NULL;
+    pQueryInfo->groupbyExpr.numOfGroupCols = 0;
   }
   
   pQueryInfo->tsBuf = tsBufDestroy(pQueryInfo->tsBuf);
@@ -2156,6 +2157,19 @@ int16_t tscGetJoinTagColIdByUid(STagCond* pTagCond, uint64_t uid) {
   }
 }
 
+int16_t tscGetTagColIndexById(STableMeta* pTableMeta, int16_t colId) {
+  int32_t numOfTags = tscGetNumOfColumns(pTableMeta);
+
+  SSchema* pSchema = tscGetTableTagSchema(pTableMeta);
+  for(int32_t i = 0; i < numOfTags; ++i) {
+    if (pSchema[i].colId == colId) {
+      return i;
+    }
+  }
+
+  return -1;
+}
+
 bool tscIsUpdateQuery(SSqlObj* pSql) {
   if (pSql == NULL || pSql->signature != pSql) {
     terrno = TSDB_CODE_TSC_DISCONNECTED;

tests/script/general/parser/join_multivnode.sim

@@ -132,4 +132,9 @@ sql select join_mt0.ts, join_mt1.t1, join_mt0.t1, join_mt1.tbname, join_mt0.tbna
 
 sql select join_mt0.ts, join_mt1.t1, join_mt0.t1, join_mt1.tbname, join_mt0.tbname from join_mt0, join_mt1 where join_mt0.ts=join_mt1.ts and join_mt0.t1=join_mt1.t1 limit 1
 
+sql select count(join_mt0.c1), sum(join_mt1.c2), first(join_mt0.c5), last(join_mt1.c7) from join_mt0, join_mt1 where join_mt0.t1=join_mt1.t1 and join_mt0.ts=join_mt1.ts interval(10a) group by join_mt0.t1 order by join_mt0.ts desc;
+if $rows != 100 then
+  return -1
+endi
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT