diff --git a/source/libs/qcom/src/queryUtil.c b/source/libs/qcom/src/queryUtil.c
index a5e1a73db7..59982e0260 100644
--- a/source/libs/qcom/src/queryUtil.c
+++ b/source/libs/qcom/src/queryUtil.c
@@ -472,7 +472,7 @@ int32_t cloneTableMeta(STableMeta* pSrc, STableMeta** pDst) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
   memcpy(*pDst, pSrc, metaSize);
-  if (useCompress(pSrc->tableType)) {
+  if (useCompress(pSrc->tableType) && pSrc->schemaExt) {
     (*pDst)->schemaExt = (SSchemaExt*)((char*)*pDst + metaSize);
     memcpy((*pDst)->schemaExt, pSrc->schemaExt, schemaExtSize);
   } else {