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回复讨论(解决方案)

更新多条数据

Jun 23, 2016 pm 01:06 PM

update `article`  set ppercent='".$weihbl."' where userid in ('".$sid."') AND aid in ('".$aid."') and sta in ('0') ")。

各位大神,我想把article表中,同时符合上述三个条件的数据中的ppercent设为同一个值,因此是更新多条数据,我这个句子好像写的不对,应该怎么写?谢谢大神!!


回复讨论(解决方案)

你应该打印出各个变量,看看语法是否正确。最好查看下生成的SQL语句,放到MySQL工具里执行下,看看报了什么错

什么问题?
是 SQL 指令语法错
还是实际结果与你预想的不同

应该符合条件的有3条数据,但是就更新了1条。谢谢大神。

1、打印出 SQL 指令
2、给出相关数据

应该符合条件的有3条数据,但是就更新了1条。谢谢大神。



可能,有3条符合的数据,但是有两条数据的ppercent值没有改变,所以影响的只有1条。

请问如何打印 SQL 指令?我知道这是很弱的问题。

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