diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index ba465c28b9..b6b2c0fd18 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -5336,7 +5336,8 @@ static int32_t checkUpdateTagPrjFunctions(SSqlCmd* pCmd) {
 
   for (int32_t i = 0; i < pCmd->fieldsInfo.numOfOutputCols; ++i) {
     int16_t functionId = tscSqlExprGet(pCmd, i)->functionId;
-    if (functionId == TSDB_FUNC_TAGPRJ || functionId == TSDB_FUNC_PRJ || functionId == TSDB_FUNC_TS) {
+    if (functionId == TSDB_FUNC_TAGPRJ || functionId == TSDB_FUNC_PRJ || functionId == TSDB_FUNC_TS || 
+        functionId == TSDB_FUNC_ARITHM) {
       continue;
     }
 
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index baafb57f6a..52e19ce244 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -236,7 +236,7 @@ bool tscProjectionQueryOnMetric(SSqlCmd* pCmd) {
     SSqlExpr* pExpr = tscSqlExprGet(pCmd, i);
     int32_t functionId = pExpr->functionId;
     if (functionId != TSDB_FUNC_PRJ && functionId != TSDB_FUNC_TAGPRJ &&
-        functionId != TSDB_FUNC_TAG && functionId != TSDB_FUNC_TS) {
+        functionId != TSDB_FUNC_TAG && functionId != TSDB_FUNC_TS && functionId != TSDB_FUNC_ARITHM) {
       return false;
     }
   }