Question

我想用条件＆＃39;和＆＃39;执行SQL选择查询。条款但有困难。

我想做这样的事情：

select * from customer
    where active = true
    and 
    case 
    when state = 'AK'
        then zipcode like '%701'
    when state = 'NV'
        then zipcode like '%523'
    else
        then phone not null;

如何构建查询来执行此操作？

提前感谢您提供的任何指导。

Answer 1

你的意思是？

select * from customer
where active = true
and ((state = 'AK' and zipcode like '%701')
    or (state = 'NV' and zipcode like '%523')
    or (phone not null))

Answer 2

我认为您可以使用or代替case。

select * from customer
where active = true
and ( (state = 'AK' and zipcode like '%701') or (state = 'NV' and zipcode like '%523') )
and phone is not null;

SQL：如何使用条件where子句构造一个select查询？

2 个答案: