案例與空

我有大量的數據和樣品的目的何況下面我需要wrire SP像案例與空

Create proc dbo.usp_all_property_search 
(@type varchar(2)) 
as 
begin 
select * from tbl where ol is 
select case @type 
when 'o' then null 
else 
not null 
end 

end

PLZ幫我數據

d1 date      OL 
    N 2012-03-09 00:00:00.000  NULL 
    No 2011-09-26 00:00:00.000  OL 
    N 2012-01-26 00:00:00.000  NOL 
    N 2012-03-07 00:00:00.000  NOL 
    yes 2012-02-23 00:00:00.000  NULL

。

來源

2012-02-22 Sree

什麼是您的SP不這樣做，你需要哪些幫助？ – 2012-02-22 18:10:22

如果你能解釋你想要做什麼，你會找到什麼結果會有幫助嗎？ – Brettski 2012-02-22 18:11:42

你在複雜的：

SELECT * 
FROM Tbl 
WHERE (@type = 'o' AND ol IS NULL) 
OR (@Type <> 'o' AND ol IS NOT NULL)

來源

2012-02-22 18:10:53 JNK

select * from tbl 
where (@type = 'o' and ol is null) OR 
    (@type <> 'o' and ol is not null)

來源

2012-02-22 18:10:13

我想你想要這樣的：

select * from tbl where (@type = 'o' and ol is null) or (@type != 'o' and ol is not null)

案例表達必須返回一個值，和SQL Server甚至不支持布爾數據類型。

來源

2012-02-22 18:10:23

工作的呢？

Create proc dbo.usp_all_property_search 
(@type varchar(2)) 
as 
begin 
select * from tbl 
where (@type = 'o' and ol is null) 
OR (@type != 'o' AND ol is not null) 

end

來源

2012-02-22 18:11:04 swannee

Create proc dbo.usp_all_property_search(@type varchar(2)) 
as 
begin 
    select * 
    from tbl 
    where 
    (@type = 'o' and 
     ol is null)  or 
    (@type != 'o' and 
     ol is not null); 
end

來源

2012-02-22 18:15:35

回答

相關問題