[TS-715]<fix>: fixed coredump caused by result column id underflow

src/client/src/tscServer.c

@@ -837,7 +837,11 @@ static int32_t serializeSqlExpr(SSqlExpr* pExpr, STableMetaInfo* pTableMetaInfo,
     return TSDB_CODE_TSC_INVALID_OPERATION;
   }
 
-  assert(pExpr->resColId < 0);
+  if (pExpr->resColId >= 0) {
+    tscError("result column id underflowed: %d", pExpr->resColId);
+    return TSDB_CODE_TSC_RES_TOO_MANY;
+  }
+
   SSqlExpr* pSqlExpr = (SSqlExpr *)(*pMsg);
 
   SColIndex* pIndex = &pSqlExpr->colInfo;

src/inc/taoserror.h

@@ -114,6 +114,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_TSC_VALUE_OUT_OF_RANGE        TAOS_DEF_ERROR_CODE(0, 0x0224)  //"Value out of range")
 #define TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE     TAOS_DEF_ERROR_CODE(0, 0x0225)  //"Invalid line protocol type")
 #define TSDB_CODE_TSC_INVALID_PRECISION_TYPE    TAOS_DEF_ERROR_CODE(0, 0x0226)  //"Invalid timestamp precision type")
+#define TSDB_CODE_TSC_RES_TOO_MANY              TAOS_DEF_ERROR_CODE(0, 0x0227)  //"Result set too large to be output")
 
 // mnode
 #define TSDB_CODE_MND_MSG_NOT_PROCESSED         TAOS_DEF_ERROR_CODE(0, 0x0300)  //"Message not processed")

src/util/src/terror.c

@@ -122,6 +122,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_JSON_CONFIG,      "Invalid JSON configur
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_VALUE_OUT_OF_RANGE,       "Value out of range")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_PROTOCOL_TYPE,    "Invalid line protocol type")
 TAOS_DEFINE_ERROR(TSDB_CODE_TSC_INVALID_PRECISION_TYPE,   "Invalid timestamp precision type")
+TAOS_DEFINE_ERROR(TSDB_CODE_TSC_RES_TOO_MANY,             "Result set too large to be output")
 
 // mnode
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_MSG_NOT_PROCESSED,        "Message not processed")