diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 39b1a5e8d3ce6e86d51a760f65f21052ced3b17c..9a3b36895da6e1e76735afbdd2b58c98b28949f2 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -6020,7 +6020,7 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
     int16_t i;
     uint32_t nLen = 0;
     for (i = 0; i < numOfColumns; ++i) {
-      nLen += pSchema[i].colId != columnIndex.columnIndex ? pSchema[i].bytes : pItem->bytes;
+      nLen += (i != columnIndex.columnIndex) ? pSchema[i].bytes : pItem->bytes;
     }
     if (nLen >= TSDB_MAX_BYTES_PER_ROW) {
       return invalidOperationMsg(pMsg, msg24);
@@ -6071,7 +6071,7 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
     int16_t i;
     uint32_t nLen = 0;
     for (i = 0; i < numOfTags; ++i) {
-      nLen += pSchema[i].colId != columnIndex.columnIndex ? pSchema[i].bytes : pItem->bytes;
+      nLen += (i != columnIndex.columnIndex) ? pSchema[i].bytes : pItem->bytes;
     }
     if (nLen >= TSDB_MAX_TAGS_LEN) {
       return invalidOperationMsg(pMsg, msg24);