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『MySQL』多表之间字段的匹配_MySQL

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Release: 2016-06-01 13:35:44
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1 $sql=$empire->query("select table.title,lianxi,table.dizhi,table.id from table,table1 where table1.sid like concat( '%|',table.id,'|%') and table1.id=".$navinfor[id]."");2 while($r=$empire->fetch($sql))3 {4         $title=$r['title'];5         $lianxi=$r['lianxi'];6         $dizhi=$r['dizhi'];7 }
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如下:两个表info,tag

info 表

id name

1 aa和bb

2 bb和cc

3 ee和dd

tag表

1 aa

2 bb

tag表中 name 匹配 info 中的name

这样写就有问题: select info.id, info.name from tag,info where info.name like ‘%'+tag.name+'%'

正确:

select info.id, info.name from tag,info where info.name like concat( '%',tag.name, '%')

 

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