sql case语句在哪里？

Question

select t1.customer_code as doc_num, CONVERT(VARCHAR,t2.created_on,103) as doc_date, 
t2.sap_cardcode as sap_doc_num ,t2.void_flg,t2.status_ind,t2.err_msg 
from customer t1 
inner join sap_customer t2 on t1.id = t2.customer_id 
where t2.status_ind = case when @test = 'todo' then t2.status_ind='1' else t2.status_ind='0' END 

上面是我需要做的select语句，它基于where语句，我需要传递一个param来确定它应该执行哪个。 Status Ind = 1或Status Ind = 0

Answer 1

我在查询中稍微修改了Case部分。希望这有助于：

select t1.customer_code as doc_num, CONVERT(VARCHAR,t2.created_on,103) as doc_date,t2.sap_cardcode as sap_doc_num ,t2.void_flg,t2.status_ind,t2.err_msg 
from customer t1 
inner join sap_customer t2 on t1.id = t2.customer_id 
where t2.status_ind = case when @test = 'todo' then '1' else '0' END 

或者您可以使用情况如下图所示：

where t2.status_ind = case @test when 'todo' then '1' else '0' END 

Answer 2

你CASE语句需要修改

case when @test = 'todo' then '1' else '0' END 

因为，你要比较where t2.status_ind。所以，你需要从CASE返回一些值，而不是设置它。