Merge pull request #19866 from taosdata/case/TD-22241

test: add case double comma check in insert_drop.py

tests/system-test/1-insert/insert_drop.py

@@ -31,6 +31,10 @@ class TDTestCase:
         tdSql.execute('create database if not exists test;')
         tdSql.execute('create table test.stb (ts timestamp, c11 int, c12 float ) TAGS(t11 int, t12 int );')
         tdSql.execute('create table test.tb using test.stb TAGS (1, 1);')
+
+        # double comma insert check error
+        tdSql.error("insert into test.tb(ts, c11) values(now,,100)")
+
         sql_list = list()
         for i in range(5):
             sql = f'insert into test.tb values (now-{i}m, {i}, {i});'