Question

我需要查询每个Sold Price List Price的最大Area，Building Type Month。

例如，我们有一个房地产，我们想找到：

Sold Price的最大值和百分比是“{1}}”Building Type按Month出售的是什么？

MLS No.   Area  List Price  Contract    Price Sold  Date Sold   Building Type
N1959472  N11   329500      20/09/2010  317000      13/11/2010  Semi-Detac 
N1990464  N11   339000      08/11/2010  340000      17/11/2010  Apt

Answer 1

目前尚不清楚“百分比”是什么意思，但我会告诉你如何按月分组以获得最高价格。这个百分比也可能是一种恶化，你可以稍后再添加。

select
  Area,
  HouseType,
  max(PriceSold) as MaxPriceSold
from
  YourTable
group by
  Area,
  HouseType,
  Year(DateSold),
  Month(DateSold)

Answer 2

这是我对你所需要的最好的猜测。我认为它至少可以完成你的要求。从我得到的，你想按区域分组，然后建立类型。在每个组中，您需要每月销售的建筑类型的最大金额以及售价的百分比。 “据我所知，”所售价格的百分比“完全不明确（除非我遗漏了什么）所以我认为这意味着特定区域内给定建筑类型的百分比构成该月该组的销售额。如果这些假设的任何部分都是错误的，那就这么说吧。这就是我得到的：

DECLARE @RealEstate TABLE
(
    MLSNo CHAR(8) 
    , Area CHAR(3) 
    , ListPrice INT 
    , [Contract] DATE 
    , PriceSold INT
    , DateSold DATE
    , BuildingType VARCHAR(50)
);

INSERT @RealEstate
VALUES ('N1959472', 'N11', 329500, '20100920', 329500, '20100920', 'Semi-Detac')
, ('N1990464', 'N11', 339000, '20101108', 339000, '20101108', 'Apt')
, ('N1990465', 'N11', 331350, '20101124', 331350, '20101124', 'Apt')
, ('N1990465', 'N11', 359840, '20100313', 359840, '20100313', 'Detac')
, ('N1990465', 'N11', 351230, '20100320', 351230, '20100320', 'Other Building')
, ('N1990468', 'N11', 376590, '20100328', 376590, '20100328', 'Outhouse')
, ('N1990468', 'N11', 374838, '20100315', 374838, '20100315', 'Detac')
, ('N1990469', 'N11', 351976, '20100328', 351976, '20100328', 'Detac')
, ('N1990470', 'N11', 348901, '20100303', 348901, '20100303', 'Other Building')
, ('N1990471', 'N11', 101685, '20100516', 101685, '20100516', 'Other Building')
, ('N1990472', 'N11', 359875, '20100909', 359875, '20100909', 'Apt');


DECLARE @Year INT = 2010;

WITH Aggregated AS
(
    SELECT
        Area
        , BuildingType
        , DATENAME(MONTH, DateSold) AS NameOfMonth
        , PriceSold
        --, MAX(PriceSold) OVER(PARTITION BY Area, BuildingType, DATENAME(MONTH, DateSold)) AS MaxForMonth
        , CAST((CAST(PriceSold AS DECIMAL) / (SUM(PriceSold) OVER(PARTITION BY Area, DATENAME(MONTH, DateSold))) * 100) AS INT) AS PercentageOfPriceSold
    FROM @RealEstate
    WHERE YEAR(DateSold) = @Year
)
, PivotedMax AS
(
    SELECT
        Area
        , BuildingType
        , ISNULL(January, 0) AS MaxSoldInJanuary
        , ISNULL(February, 0) AS MaxSoldInFebruary
        , ISNULL(March, 0) AS MaxSoldInMarch
        , ISNULL(April, 0) AS MaxSoldInApril
        , ISNULL(May, 0) AS MaxSoldInMay
        , ISNULL(June, 0) AS MaxSoldInJune
        , ISNULL(July, 0) AS MaxSoldInJuly
        , ISNULL(August, 0) AS MaxSoldInAugust
        , ISNULL(September, 0) AS MaxSoldInSeptember
        , ISNULL(October, 0) AS MaxSoldInOctober
        , ISNULL(November, 0) AS MaxSoldInNovember
        , ISNULL(December, 0) AS MaxSoldInDecember
    FROM Aggregated
    PIVOT
    (
        MAX(PriceSold)
        FOR NameOfMonth IN
        (
            [January]
            , [February]
            , [March]
            , [April]
            , [May]
            , [June]
            , [July]
            , [August]
            , [September]
            , [October]
            , [November]
            , [December]
        )
    ) Pivoted
)
, PivotedPercent AS
(
    SELECT
        Area
        , BuildingType
        , ISNULL(January, 0)  AS PercentageOfSalesInJanuary
        , ISNULL(February, 0) AS PercentageOfSalesInFebruary
        , ISNULL(March, 0) AS PercentageOfSalesInMarch
        , ISNULL(April, 0) AS PercentageOfSalesInApril
        , ISNULL(May, 0) AS PercentageOfSalesInMay
        , ISNULL(June, 0) AS PercentageOfSalesInJune
        , ISNULL(July, 0) AS PercentageOfSalesInJuly
        , ISNULL(August, 0) AS PercentageOfSalesInAugust
        , ISNULL(September, 0) AS PercentageOfSalesInSeptember
        , ISNULL(October, 0) AS PercentageOfSalesInOctober
        , ISNULL(November, 0) AS PercentageOfSalesInNovember
        , ISNULL(December, 0) AS PercentageOfSalesInDecember
    FROM Aggregated
    PIVOT
    (
        MAX(PercentageOfPriceSold)
        FOR NameOfMonth IN
        (
            [January]
            , [February]
            , [March]
            , [April]
            , [May]
            , [June]
            , [July]
            , [August]
            , [September]
            , [October]
            , [November]
            , [December]
        )
    ) Pivoted
)
SELECT
    PivotedMax.Area
    , PivotedPercent.BuildingType
    , PivotedMax.MaxSoldInJanuary
    , PivotedPercent.PercentageOfSalesInJanuary
    , PivotedMax.MaxSoldInFebruary
    , PivotedPercent.PercentageOfSalesInFebruary
    , PivotedMax.MaxSoldInJanuary
    , PivotedPercent.PercentageOfSalesInMarch
    , PivotedMax.MaxSoldInMarch
    , PivotedPercent.PercentageOfSalesInApril
    , PivotedMax.MaxSoldInApril
    , PivotedPercent.PercentageOfSalesInMay
    , PivotedMax.MaxSoldInMay
    , PivotedPercent.PercentageOfSalesInJune
    , PivotedMax.MaxSoldInJune
    , PivotedPercent.PercentageOfSalesInAugust
    , PivotedMax.MaxSoldInAugust
    , PivotedPercent.PercentageOfSalesInSeptember
    , PivotedMax.MaxSoldInSeptember
    , PivotedPercent.PercentageOfSalesInOctober
    , PivotedMax.MaxSoldInOctober
    , PivotedPercent.PercentageOfSalesInJanuary
    , PivotedMax.MaxSoldInNovember
    , PivotedPercent.PercentageOfSalesInNovember
    , PivotedMax.MaxSoldInDecember
    , PivotedPercent.PercentageOfSalesInDecember
FROM PivotedMax
INNER JOIN PivotedPercent
    ON PivotedPercent.Area = PivotedMax.Area
        AND PivotedPercent.BuildingType = PivotedMax.BuildingType

样本数据全部用于一个区域，但对许多人来说应该可以正常工作。它也可以修改为按区域工作并取出建筑类型分组。希望有所帮助。

查询每个组的最高售价与列表价格的百分比

2 个答案: