diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index d96e15eb5b5fa329b78970073a9b28c787b51765..9df50b0fa1433e82149362da1c7ca5884dbb96ee 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -5340,7 +5340,8 @@ 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 7c7310a1c7e12fb607920cfeb32f1f6480de8fd8..9876dad90667daa013d6dc1d7de7eb93df74b72b 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -246,7 +246,7 @@ bool tscProjectionQueryOnMetric(SSqlCmd* pCmd) {
   for (int32_t i = 0; i < pCmd->fieldsInfo.numOfOutputCols; ++i) {
     int32_t functionId = tscSqlExprGet(pCmd, i)->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;
     }
   }