在帝国CMS模板中，可以通过不同的SQL查询方式来调用指定栏目中的所有TAG。以下是四种不同的方法及其解释。
方法1
SQL 查询
sql
select DISTINCT([!db.pre!]enewstags.tagname), [!db.pre!]enewstags.tagid, [!db.pre!]enewstags.num
from [!db.pre!]enewstags
inner join [!db.pre!]enewstagsdata on [!db.pre!]enewstags.tagid = [!db.pre!]enewstagsdata.tagid
where [!db.pre!]enewstagsdata.classid = 34
order by [!db.pre!]enewstags.num DESC
limit 30模板代码
html
[e:loop={"select DISTINCT([!db.pre!]enewstags.tagname), [!db.pre!]enewstags.tagid, [!db.pre!]enewstags.num
from [!db.pre!]enewstags
inner join [!db.pre!]enewstagsdata on [!db.pre!]enewstags.tagid = [!db.pre!]enewstagsdata.tagid
where [!db.pre!]enewstagsdata.classid = 34
order by [!db.pre!]enewstags.num DESC
limit 30", 0, 24}]
<a href='<?=$public_r['newsurl']?>e/tags/?tagname=<?=$bqr['tagname']?>' title='<?=$bqr['num']?>个'><?=$bqr['tagname']?> (<?=$bqr['num']?>)
</a>
[/e:loop]方法2
SQL 查询
sql
select a.tagname, a.num, b.tagid
from [!db.pre!]enewstags a, [!db.pre!]enewstagsdata b
where a.tagid = b.tagid and classid = 34
group by tagid
order by num desc
limit 40模板代码
html
[e:loop={"select a.tagname, a.num, b.tagid
from [!db.pre!]enewstags a, [!db.pre!]enewstagsdata b
where a.tagid = b.tagid and classid = 34
group by tagid
order by num desc
limit 40", 40, 24, 0}]
<a href='<?=$public_r['newsurl']?>e/tags/?tagname=<?=$bqr['tagname']?>' title='<?=$bqr['num']?>个'><?=$bqr['tagname']?> (<?=$bqr['num']?>)
</a>
[/e:loop]方法3
SQL 查询
sql
select a.*, b.*
from [!db.pre!]enewstags a, [!db.pre!]enewstagsdata b
where a.tagid = b.tagid and classid = 34
group by b.tagid
order by a.num desc
limit 40模板代码
html
[e:loop={"select a.*, b.*
from [!db.pre!]enewstags a, [!db.pre!]enewstagsdata b
where a.tagid = b.tagid and classid = 34
group by b.tagid
order by a.num desc
limit 40", 40, 24, 0}]
<a href='<?=$public_r['newsurl']?>e/tags/?tagname=<?=$bqr['tagname']?>' title='<?=$bqr['num']?>个'><?=$bqr['tagname']?> (<?=$bqr['num']?>)
</a>
[/e:loop]方法4
SQL 查询
sql
select a.*, b.*
from [!db.pre!]enewstags a
LEFT JOIN [!db.pre!]enewstagsdata b ON a.tagid = b.tagid
where classid = 34
group by b.tagid
order by a.num desc
limit 100模板代码
html
[e:loop={"select a.*, b.*
from [!db.pre!]enewstags a
LEFT JOIN [!db.pre!]enewstagsdata b ON a.tagid = b.tagid
where classid = 34
group by b.tagid
order by a.num desc
limit 100", 0, 24, 0}]
<a href='<?=$public_r['newsurl']?>e/tags/?tagname=<?=$bqr['tagname']?>' title='<?=$bqr['num']?>个'><?=$bqr['tagname']?> (<?=$bqr['num']?>)
</a>
[/e:loop]注释
-
调用单个栏目：
- 将
classid = 34替换为你需要的栏目 ID。
- 将
-
多个栏目时：
- 将
classid = 34替换为classid in(34, 35, 36, 37)。
- 将
-
调用当前栏目：
- 将
classid = 34替换为classid = '$GLOBALS[navclassid]'。
- 将
总结
以上四种方法都可以实现调用指定栏目中的所有 TAG。根据实际需求选择合适的方法，并根据需要调整 SQL 查询中的条件。
