UNION 查询语句经常弄出裹脚布.解决方案 -PHP Tutorial-php.cn

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UNION 查询语句经常弄出裹脚布.解决方案

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Jun 13, 2016 pm 01:33 PM

phpsqlunion

UNION 查询语句经常弄出裹脚布...
两个表union 再合计,字段多一点.
格式化一下SQL语句行数87...
我擦~ 好在是用代码生成的.

不过觉得SQL蛮有意思.

------解决方案--------------------
要让对应的列属性一致，当然是程序生成的好些
------解决方案--------------------
貌似见过1500+行的SQL 表示压力好大
------解决方案--------------------
复杂点的统计，写出来。过几天都不认他了
------解决方案--------------------
如果想封装，可以用php函数封装一层，来操作数据库。有没有必要就不知道了
------解决方案--------------------
怎么会那么多字段啊？
------解决方案--------------------
.....搞那么多字段....

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