StringtableSql="SELECT a.table_name tableName,a.table_comment tableDes,b.COLUMN_NAME fieldName,b.column_comment fieldDes,b.column_type fieldType FROM information_schema. TABLES a LEFT JOIN information_schema. COLUMNS b ON a.table_name = b.TABLE_NAME WHERE a.table_name = 'kt_test_case' AND a.table_schema = 'key_stone' ORDER BY a.table_name";