duanhu7390 2010-05-20 22:35
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选择...其中id =任何值。 可能吗?

look at this table please

table
|id| |name| |order|

i must get the rows, where name = something and order = somevalue

so i write

select `id` from `table` where `name` = 'something' and `order` = 'somevalue'

but depend on php logic, sometimes i need to get all rows, where name = something, independently of order value. i don't want to change the query structure, because in practise there are many number of fields, and possible count of queries will become very big. so i want to save the structure of query, and when i need to select just by name, i want to write something like this:

select `id` from `table` where `name` = 'something' and `order` = any value 

is it possible?

thanks

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  • dtd793353 2010-05-20 22:40
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    Well, it's kind of a hack, but if you really need to do this, it'll work like this:

    select `id` from `table` where `name` = 'something' and `order` = `order`
    

    Then you're just saying "wherever order is the same as itself", so it's always true.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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