diff --git a/source/libs/parser/src/parser.c b/source/libs/parser/src/parser.c
index 7e27132f3cbc453a5cf09bd487acc75fa546ff7e..7ee6a5b2236b24a676214c3538ed182aa52f427a 100644
--- a/source/libs/parser/src/parser.c
+++ b/source/libs/parser/src/parser.c
@@ -136,8 +136,7 @@ static int32_t setValueByBindParam(SValueNode* pVal, TAOS_MULTI_BIND* pParam) {
 }
 
 static EDealRes rewriteQueryExprAliasImpl(SNode* pNode, void* pContext) {
-  if (nodesIsExprNode(pNode) && QUERY_NODE_COLUMN != nodeType(pNode) && '\0' == ((SExprNode*)pNode)->userAlias[0]) {
-    strcpy(((SExprNode*)pNode)->userAlias, ((SExprNode*)pNode)->aliasName);
+  if (nodesIsExprNode(pNode) && QUERY_NODE_COLUMN != nodeType(pNode)) {
     sprintf(((SExprNode*)pNode)->aliasName, "#%d", *(int32_t*)pContext);
     ++(*(int32_t*)pContext);
   }
diff --git a/tests/script/api/batchprepare.c b/tests/script/api/batchprepare.c
index ada2039460b431363555025ec7984f6b2f1b354a..f39d5e6528275900350ffaefbee18d43ce9a9e81 100644
--- a/tests/script/api/batchprepare.c
+++ b/tests/script/api/batchprepare.c
@@ -2598,7 +2598,6 @@ void runAll(TAOS *taos) {
   printf("%s Begin\n", gCaseCtrl.caseCatalog);
   runCaseList(taos);
 
-#if 0
   strcpy(gCaseCtrl.caseCatalog, "Micro DB precision Test");
   printf("%s Begin\n", gCaseCtrl.caseCatalog);
   gCaseCtrl.precision = TIME_PRECISION_MICRO;
@@ -2654,7 +2653,6 @@ void runAll(TAOS *taos) {
   gCaseCtrl.bindColNum = 6;
   runCaseList(taos);
   gCaseCtrl.bindColNum = 0;
-#endif
 
 /*
   strcpy(gCaseCtrl.caseCatalog, "Bind Col Type Test");