SQL Server在sql变量中存储多个值

问题描述

我有以下查询:

select *
from cars
where make in ('BMW', 'Toyota', 'Nissan')

我要做的是将where参数存储在SQL变量中.

What I want to do is store the where parameters in a SQL variable.

类似的东西:

declare @caroptions varchar(max);
select @caroptions =  select distinct(make) from carsforsale;
print @caroptions;
select * from cars where make in (@caroptions)

问题是@caroptions的打印仅从以下位置返回了最后结果:

Problem is the print of @caroptions only has the last result returned from:

select distinct(make) from carsforsale;

我希望它存储多个值.

有什么想法吗?

推荐答案

您可以使用表变量:

declare @caroptions table
(
    car varchar(1000)
)

insert into @caroptions values ('BMW')
insert into @caroptions values ('Toyota')
insert into @caroptions values ('Nissan')

select * from cars where make in (select car from @caroptions)

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