数据库 - php先按year倒序查询 再按term为2的先查询 为1的后查询
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- 2016-06-06 20:40:241121瀏覽
<code>Array
(
[id] => 1
[user_id] => 1
[year] => 2013-2014
[term] => 1
)
Array
(
[id] => 2
[user_id] => 1
[year] => 2013-2014
[term] => 2
)
Array
(
[id] => 3
[user_id] => 1
[year] => 2012-2013
[term] => 1
)
</code>
如上面 先在year倒序查询的情况下 再按term为2的先查询 为1的后查询 最好用thinkphp
应该查出来是这样的
<code>Array
(
[id] => 2
[user_id] => 1
[year] => 2013-2014
[term] => 2
)
Array
(
[id] => 1
[user_id] => 1
[year] => 2013-2014
[term] => 1
)
Array
(
[id] => 3
[user_id] => 1
[year] => 2012-2013
[term] => 1
)
</code>
回复内容：
<code>Array
(
[id] => 1
[user_id] => 1
[year] => 2013-2014
[term] => 1
)
Array
(
[id] => 2
[user_id] => 1
[year] => 2013-2014
[term] => 2
)
Array
(
[id] => 3
[user_id] => 1
[year] => 2012-2013
[term] => 1
)
</code>
如上面 先在year倒序查询的情况下 再按term为2的先查询 为1的后查询 最好用thinkphp
应该查出来是这样的
<code>Array
(
[id] => 2
[user_id] => 1
[year] => 2013-2014
[term] => 2
)
Array
(
[id] => 1
[user_id] => 1
[year] => 2013-2014
[term] => 1
)
Array
(
[id] => 3
[user_id] => 1
[year] => 2012-2013
[term] => 1
)
</code>
ORDER关键字是可以给多个字段的
<code>ORDER BY `year` DESC, `term` DESC </code>
陳述：
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