mysql 怎么在多张表找查数据

发布网友发布时间：2022-05-02 13:30

共2个回答

热心网友时间：2022-05-02 14:59

select * from help where title ='123'
union all
select * from new where title='123'
order by date desc;
要求这2帐表的字段相同数据类型相同。追问谢谢你！
$_rows = mysql_query("SELECT jt_id,jt_title,jt_date FROM jt_policy WHERE jt_title LIKE '%{$_POST['keyword']}%'
UNION ALL
SELECT jt_id,jt_title,jt_date FROM jt_help WHERE jt_title LIKE '%{$_POST['keyword']}%'
UNION ALL
SELECT jt_id,jt_title,jt_date FROM jt_new WHERE jt_title LIKE '%{$_POST['keyword']}%' ORDER BY jt_date DESC
");

热心网友时间：2022-05-02 16:17

select * from help where title ='123'
union all
select * from new where title='123'
order by date desc;

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