Question

我的代码有问题：P显然对吗？！无论如何...这里是什么...我想要一个STORED PROC，它需要3个args（@ cat，@ cutPrice，@ option）并返回多个类似于@cat的结果，并且价格低于＆lt;或者＆gt; @cutPrice取决于@option关键字＆＃39;以上＆＃39;或者＆＃39;以下＆＃39;问题是我执行这个......

EXEC spBookByPrice  
@cat = 'business', @cutPrice = 0.00, @option = 'above'

......我没有结果，但@option =＆＃39; ＆＃39;显示所有价格。无论如何，我的代码......

ALTER PROC spBookByPrice
@cat varchar(12), @cutPrice money, @option varchar(5)
AS
BEGIN
    SELECT
    title AS 'Title:',
    type AS 'Category:',
    price AS 'Price:',
    CASE 
        WHEN price >= @cutPrice THEN 'above'
        WHEN price < @cutPrice THEN 'below'
        --ELSE NULL
    END AS 'Option:'
    FROM dbo.titles
    WHERE 'Option:' LIKE '%' + @option + '%'
    GROUP BY type, title, price
    HAVING type LIKE '%' + @cat + '%'
END

Answer 1

这是你需要的：

ALTER PROC spBookByPrice
@cat varchar(12), @cutPrice money, @option varchar(5)
AS
BEGIN
    SELECT
    title AS [Title:],
    type AS [Category:],
    price AS [Price:],
    CASE 
        WHEN price >= @cutPrice THEN 'above'
        WHEN price < @cutPrice THEN 'below'
        --ELSE NULL
    END AS [Option:]
    FROM dbo.titles
    WHERE (CASE WHEN price >= @cutPrice THEN 'above'
                WHEN price < @cutPrice THEN 'below'
            --ELSE NULL
            END) LIKE '%' + @option + '%'
    GROUP BY type, title, price
    HAVING type LIKE '%' + @cat + '%'
END

Answer 2

select title [Title:], type [Category:], price [Price:],
  [Option:] = iif(price >= @cutPrice, 'above', 'below')
from titles
where type like concat('%', @cat, '%') and (@option = ''
   or (@option='below' and price < @cutPrice)
   or (@option='above' and price >= @cutPrice))

在存储过程中通过args过滤

2 个答案: