Question

对于我的Realty网站，我还想从两个下拉列表MinPrice和MaxPrice（也是字段值）返回属于用户请求的价格范围内的属性。

以下是我的发言。除上述要求外，它的工作正常。

SELECT busname, email, render_pic, 
       area,logo, url, email, map, 
       description, tag, catch_phrase, region
FROM   Results
WHERE  STYLE LIKE 'varStyle' 
   AND REGION LIKE 'varRegion' 
   AND BEDROOMS LIKE 'varBedrooms' 
   AND BATHROOMS LIKE 'varBathrooms'
ORDER BY ID desc

提前谢谢你！

Answer 1

and Price between @minprice and @maxprice

编辑：要涵盖@paxdiablo的建议，虽然我不知道为什么房子除了价格之外还有什么东西......

and (minprice between @minprice and @maxprice 
or maxprice between @minprice and @maxprice
or @minprice between minprice and maxprice)

Answer 2

有两个重叠的区域（在输入和记录中）有点嘀嗒，但你应该尝试：

SELECT
    busname, ...
FROM Results
WHERE STYLE LIKE &varStyle
  AND REGION LIKE &varRegion
  AND BEDROOMS LIKE &varBedrooms
  AND BATHROOMS LIKE &varBathrooms
  AND (
         MINPRICE between &MinPrice and &MaxPrice
      OR MAXPRICE between &MinPrice and &MaxPrice
      OR (MINPRICE <= &MinPrice AND MAXPRICE >= &MaxPrice)
  )
ORDER BY ID desc

如果您的行最小/最大范围内的任何价格都在您的搜索最小/最大范围内（包括行最小/最大完全在搜索范围内）或整个搜索范围在您的行范围内，这将匹配是我认为你想要的。

此外，您可能需要重新考虑使用LIKE，除非实际允许那些var...变量拥有通配符。一些不太智能的DBMS可能无法自动将它们转换为更高效的=操作。

Answer 3

SELECT busname, email, render_pic, 
       area,logo, url, email, map, 
       description, tag, catch_phrase, region
FROM   Results
WHERE  STYLE LIKE 'varStyle' 
   AND REGION LIKE 'varRegion' 
   AND BEDROOMS LIKE 'varBedrooms' 
   AND BATHROOMS LIKE 'varBathrooms'
   AND Price between varMinPrice and varMaxPrice
ORDER BY ID desc

Answer 4

这就是我执行此类查询的方式：

只传递用户选择的任何其他未指定的值，因为它们在下面的sproc中默认为NULL。我猜对了参数类型，但你明白了。还添加了'％'，以便区域和样式是通配的。

以下查询将根据所提供的参数的任何或所有组合返回匹配结果。

CREATE PROCEDURE [dbo].[spGetProperties] 
      @style     VARCHAR(50)  = NULL
     ,@region    VARCHAR(50)  = NULL
     ,@bedrooms  TINYINT      = NULL
     ,@bathrooms TINYINT      = NULL
     ,@minPrice  INT          = NULL
     ,@maxPrice  INT          = NULL    
AS
BEGIN

     SELECT busname, email, render_pic, 
        area,logo, url, email, map, 
        description, tag, catch_phrase, region
     FROM   Results
         WHERE    (@style IS NULL OR STYLE LIKE '%' + @style + '%')
              AND (@region IS NULL OR REGION LIKE '%' + @region + '%')
              AND (@bedrooms IS NULL OR BEDROOMS >= @bedrooms)
              AND (@bathrooms IS NULL OR BATHROOMS >= @bathrooms)
              AND (@minPrice IS NULL OR MINPRICE >= @minPrice)
              AND (@maxPrice IS NULL OR MAXPRICE <= @maxPrice)
     ORDER BY ID desc

END

SQL查询一系列属于最小值和最大值的记录

4 个答案: