diff --git a/tests/system-test/2-query/union.py b/tests/system-test/2-query/union.py
index 67b3479f5eea98085af31f691caa75fa33accfcf..af1779e1e3e6045cf1b032851d7e54c594f817d9 100644
--- a/tests/system-test/2-query/union.py
+++ b/tests/system-test/2-query/union.py
@@ -36,54 +36,54 @@ class TDTestCase:
             query_condition.extend(
                 (
                     f"{tbname}.{char_col}",
-                    # f"upper( {tbname}.{char_col} )",
-                    # f"char_length( {tbname}.{char_col} )",
-                    # f"concat( {tbname}.{char_col}, {tbname}.{char_col} )",
-                    # f"concat_ws( '_', {tbname}.{char_col}, {tbname}.{char_col} )",
-                    # f"length( {tbname}.{char_col} )",
-                    # f"lower( {tbname}.{char_col} )",
-                    # f"ltrim( {tbname}.{char_col} )",
-                    # f"rtrim( {tbname}.{char_col} )",
-                    # f"substr( {tbname}.{char_col}, 1 )",
-                    # f"count( {tbname}.{char_col} )",
+                    f"upper( {tbname}.{char_col} )",
+                    f"char_length( {tbname}.{char_col} )",
+                    f"concat( {tbname}.{char_col}, {tbname}.{char_col} )",
+                    f"concat_ws( '_', {tbname}.{char_col}, {tbname}.{char_col} )",
+                    f"length( {tbname}.{char_col} )",
+                    f"lower( {tbname}.{char_col} )",
+                    f"ltrim( {tbname}.{char_col} )",
+                    f"rtrim( {tbname}.{char_col} )",
+                    f"substr( {tbname}.{char_col}, 1 )",
+                    f"count( {tbname}.{char_col} )",
                     f"cast( {tbname}.{char_col} as nchar(3) )",
                     f"cast( {tbname}.{char_col} as nchar(8) )",
                 )
             )
-            # query_condition.extend( f"cast( {tbname}.{un_char_col} as binary(16) ) " for un_char_col in NUM_COL)
-            # query_condition.extend( f"cast( {tbname}.{char_col} + {tbname}.{char_col_2} as binary(32) ) " for char_col_2 in CHAR_COL )
-            # query_condition.extend( f"cast( {tbname}.{char_col} + {tbname}.{un_char_col} as binary(32) ) " for un_char_col in NUM_COL )
+            query_condition.extend( f"cast( {tbname}.{un_char_col} as binary(16) ) " for un_char_col in NUM_COL)
+            query_condition.extend( f"cast( {tbname}.{char_col} + {tbname}.{char_col_2} as binary(32) ) " for char_col_2 in CHAR_COL )
+            query_condition.extend( f"cast( {tbname}.{char_col} + {tbname}.{un_char_col} as binary(32) ) " for un_char_col in NUM_COL )
 
         for num_col in NUM_COL:
             query_condition.extend(
                 (
                     f"{tbname}.{num_col}",
-                    # f"ceil( {tbname}.{num_col} )",
-                    # f"abs( {tbname}.{num_col} )",
-                    # f"acos( {tbname}.{num_col} )",
-                    # f"asin( {tbname}.{num_col} )",
-                    # f"atan( {tbname}.{num_col} )",
-                    # f"cos( {tbname}.{num_col} )",
-                    # f"floor( {tbname}.{num_col} )",
-                    # f"log( {tbname}.{num_col},  {tbname}.{num_col})",
-                    # f"sin( {tbname}.{num_col} )",
-                    # f"sqrt( {tbname}.{num_col} )",
-                    # f"tan( {tbname}.{num_col} )",
-                    # f"round( {tbname}.{num_col} )",
+                    f"ceil( {tbname}.{num_col} )",
+                    f"abs( {tbname}.{num_col} )",
+                    f"acos( {tbname}.{num_col} )",
+                    f"asin( {tbname}.{num_col} )",
+                    f"atan( {tbname}.{num_col} )",
+                    f"cos( {tbname}.{num_col} )",
+                    f"floor( {tbname}.{num_col} )",
+                    f"log( {tbname}.{num_col},  {tbname}.{num_col})",
+                    f"sin( {tbname}.{num_col} )",
+                    f"sqrt( {tbname}.{num_col} )",
+                    f"tan( {tbname}.{num_col} )",
+                    f"round( {tbname}.{num_col} )",
                     f"max( {tbname}.{num_col} )",
                     f"sum( {tbname}.{num_col} )",
                     f"count( {tbname}.{num_col} )",
                     f"min( {tbname}.{num_col} )",
                 )
             )
-            # query_condition.extend( f"{tbname}.{num_col} + {tbname}.{num_col_2}" for num_col_2 in NUM_COL )
-            # query_condition.extend( f"{tbname}.{num_col} + {tbname}.{char_col} " for char_col in CHAR_COL )
+            query_condition.extend( f"{tbname}.{num_col} + {tbname}.{num_col_2}" for num_col_2 in NUM_COL )
+            query_condition.extend( f"{tbname}.{num_col} + {tbname}.{char_col} " for char_col in CHAR_COL )
 
         query_condition.extend(
             (
-                # ''' "test1234!@#$%^&*():'><?/.,][}{" ''',
+                ''' "test1234!@#$%^&*():'><?/.,][}{" ''',
                 ''' "test12" ''',
-                # 1010
+                1010,
             )
         )
 
@@ -208,8 +208,8 @@ class TDTestCase:
                         )
                     )
 
-        # return filter(None, sqls)
-        return list(filter(None, sqls))
+        return filter(None, sqls)
+        # return list(filter(None, sqls))
 
     def __get_type(self, col):
         if tdSql.cursor.istype(col, "BOOL"):