栖息地

1、动态插入2、动态更新3、批量更新/删除4、动态查询

1、如果直接用如下sql语句是会报错：Incorrect usage of UNION and ORDER BY。SELECT * FROM table WHERE status=0 ORDER BY status,starttimeUNIONSELECT * FROM table WHERE status=1 ORDER BY status,updatetime DESC因为union在没有括号...