<fix> stmt affected rows: handle multi vnode subquery and insert batch clean...

<fix> stmt affected rows: handle multi vnode subquery and insert batch clean after execute and normal stmt execute

src/client/src/tscPrepare.c

@@ -78,6 +78,8 @@ typedef struct STscStmt {
   SSqlObj* pSql;
   SMultiTbStmt mtb;
   SNormalStmt normal;
+
+  int numOfRows;
 } STscStmt;
 
 #define STMT_RET(c) do {          \
@@ -1212,6 +1214,8 @@ static int insertStmtExecute(STscStmt* stmt) {
   // wait for the callback function to post the semaphore
   tsem_wait(&pSql->rspSem);
 
+  stmt->numOfRows += pSql->res.numOfRows;
+
   // data block reset
   pCmd->batchSize = 0;
   for(int32_t i = 0; i < pCmd->insertParam.numOfTables; ++i) {
@@ -1285,6 +1289,8 @@ static int insertBatchStmtExecute(STscStmt* pStmt) {
 
   code = pStmt->pSql->res.code;
 
+  pStmt->numOfRows += pStmt->pSql->res.numOfRows;
+
   insertBatchClean(pStmt);
 
   return code;
@@ -1521,6 +1527,7 @@ TAOS_STMT* taos_stmt_init(TAOS* taos) {
   pSql->maxRetry    = TSDB_MAX_REPLICA;
   pStmt->pSql       = pSql;
   pStmt->last       = STMT_INIT;
+  pStmt->numOfRows  = 0;
   registerSqlObj(pSql);
 
   return pStmt;
@@ -1564,9 +1571,7 @@ int taos_stmt_prepare(TAOS_STMT* stmt, const char* sql, unsigned long length) {
   }
 
   pRes->qId = 0;
-  pRes->numOfRows = 1;
-
-  registerSqlObj(pSql);
+  pRes->numOfRows = 0;
 
   strtolower(pSql->sqlstr, sql);
   tscDebugL("0x%"PRIx64" SQL: %s", pSql->self, pSql->sqlstr);
@@ -1981,6 +1986,7 @@ int taos_stmt_execute(TAOS_STMT* stmt) {
     } else {
       taosReleaseRef(tscObjRef, pStmt->pSql->self);
       pStmt->pSql = taos_query((TAOS*)pStmt->taos, sql);
+      pStmt->numOfRows += taos_affected_rows(pStmt->pSql);
       ret = taos_errno(pStmt->pSql);
       free(sql);
     }
@@ -1992,12 +1998,12 @@ int taos_stmt_execute(TAOS_STMT* stmt) {
 int taos_stmt_affected_rows(TAOS_STMT* stmt) {
   STscStmt* pStmt = (STscStmt*)stmt;
 
-  if (pStmt == NULL || pStmt->pSql == NULL || pStmt->pSql->signature != pStmt->pSql) {
+  if (pStmt == NULL) {
     tscError("statement is invalid");
     return 0;
   }
 
-  return pStmt->pSql->res.numOfRows;
+  return pStmt->numOfRows;
 }
 
 TAOS_RES *taos_stmt_use_result(TAOS_STMT* stmt) {

tests/examples/c/prepare.c

@@ -184,6 +184,10 @@ void verify_prepare(TAOS* taos) {
     taos_stmt_close(stmt);
     exit(EXIT_FAILURE);
   }
+
+  int affectedRows = taos_stmt_affected_rows(stmt);
+  printf("sucessfully inserted %d rows\n", affectedRows);
+
   taos_stmt_close(stmt);
 
   // query the records
@@ -400,6 +404,9 @@ void verify_prepare2(TAOS* taos) {
     exit(EXIT_FAILURE);
   }
 
+  int affectedRows = taos_stmt_affected_rows(stmt);
+  printf("sucessfully inserted %d rows\n", affectedRows);
+
   taos_stmt_close(stmt);
 
   // query the records
@@ -784,6 +791,10 @@ void verify_prepare3(TAOS* taos) {
     taos_stmt_close(stmt);
     exit(EXIT_FAILURE);
   }
+  
+  int affectedRows = taos_stmt_affected_rows(stmt);
+  printf("successfully inserted %d rows\n", affectedRows);
+
   taos_stmt_close(stmt);
 
   // query the records