在线时间:8:00-16:00
迪恩网络APP
随时随地掌握行业动态
扫描二维码
关注迪恩网络微信公众号
$sql = "select * from goods where goods_name in('海尔','海尔x1') "; //in 输出goods_name等于海尔和海尔x1的字段 $sql = "select * from goods where price between 4000 and 5000"; //between and 输出price4000到5000之间的值 $sql = "select * from goods where cat_id is null"; //is 或者 is not null 为null值 不可写成(cat_id=null)是错的
|
2022-08-17
2022-11-06
2022-07-18
2022-08-18
2022-07-29
请发表评论