常用sql语句
插入:
//sql插入语句 $query = "INSERT INTO table(name,openid) VALUES ('$name','$openid')";
查询:
//sql条件查询语句 $query = "select * from table where ygh=$ygh and password=$pass"; //sql条件查询语句(获取相同字段最后一个id的一行数据) $query = "select * from table where openid='$openid' and id=(select max(id) from table where openid='$openid') "; //sql条件修改语句(时间降序排列,可以把时间改为id) $query = "SELECT name,tx,ly,time FROM table ORDER BY time DESC"; //sql条件修改语句(时间升序排列,可以把时间改为id) $query = "SELECT name,tx,ly,time FROM table ORDER BY time ASC"; //sql条件修改语句(查询时间最新的15条数据,可以把时间改为id) $query = "SELECT `tx` FROM table ORDER BY time DESC LIMIT 0 ,15";
修改:
//sql条件修改语句 $query = "UPDATE table SET openid='$openid' ,password='$pass' WHERE ygh='$ygh'";
删除:
//sql删除语句 $query = "delete from table where id='$id'";