test: add test case for TS-1577

tests/pytest/query/queryError.py

@@ -69,6 +69,16 @@ class TDTestCase:
         tdSql.error("select * from dev_001 where 'name' is not null")
         tdSql.error("select * from dev_001 where \"name\" = 'first'")
         
+        # TS-1577
+        tdSql.query("show databases")
+        rows = tdSql.queryRows
+
+        for i in range(1000):
+            tdSql.execute("create database test%d" % i)
+        
+        tdSql.query("show databases")
+        tdSql.checkRows(rows + 1000)
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)