diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 429895fc9d..61c7bfa35c 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -403,7 +403,7 @@ static EDealRes translateValue(STranslateContext* pCxt, SValueNode* pVal) {
           return generateDealNodeErrMsg(pCxt, TSDB_CODE_OUT_OF_MEMORY);
         }
         varDataSetLen(pVal->datum.p, pVal->node.resType.bytes);
-        strcpy(varDataVal(pVal->datum.p), pVal->literal);
+        strncpy(varDataVal(pVal->datum.p), pVal->literal, pVal->node.resType.bytes);
         break;
       }
       case TSDB_DATA_TYPE_TIMESTAMP: {