Question

我有这个

id   number  stock
1    555     1
2    555     0
3    444     0

当所有值在同一个数字上为0时，我想返回true。编号555是假的，因为库存有1个。数字3为真，因为所有股票值都为0。

我该怎么做？

Answer 1

你可以这样做：

select 
  number,
  case
    when min(stock) = 0 and max(stock) = 0 then 'true'
    else 'false'
  end as TrueOrFalse
from TheTable
group by number

查询将返回number列中的所有不同值以及相应的true / false状态。

这是一个现场演示：http://www.sqlfiddle.com/#!9/61c82/1

Answer 2

如果要显示所有行的指示符，请尝试此

WITH cte
     AS (SELECT Count(CASE WHEN stock = 0 THEN 1 END)OVER(partition BY number) f_count,
                Count(1)OVER(partition BY number) AS t_count,*
         FROM   Yourtable)
SELECT id,
       number,
       stock,
       Indicator=CASE WHEN f_count <> t_count THEN 'False' ELSE 'True' END
FROM   cte

SQL FIDDLE DEMO

Answer 3

SELECT number,
       CASE WHEN COUNT(CASE WHEN stock <> 0 THEN 1 END) = 0 
       THEN 'true' ELSE 'false' END
FROM dbo.TableName
GROUP BY number

Demo

Answer 4

您可以使用此

select number,stock,
    case when sum(stock)=0 then 'true' else 'false' end AS Staus  
    from #temp group by number,stock

当所有值都为0时，从查询返回true

4 个答案: