需要有关 SQL Server 游标的帮助

Question

我有这张桌子：

我想要这个输出：

我正在使用此代码

DECLARE @InvoiceNo Varchar(100)
SET @InvoiceNo = '17-18/1003'

DECLARE @srNO Varchar(100)
PRINT @InvoiceNo

BEGIN

    CREATE TABLE #tempTableNew 
    (
        SrNO Varchar(100),
        Description Varchar(100),
        Qnty Varchar(100),
        Unit Varchar(100),
        Rate Varchar(100),
        Amount Varchar(100)
    )

    DECLARE CREATFINALTABLE CURSOR FOR
        SELECT
            ROW_NUMBER() OVER(ORDER BY B.InvoiceNo ASC) AS 'SrNo'
        FROM 
            Billing B
        INNER JOIN 
            Furniture F on F.FurnitureID = B.ProductID
        WHERE
            B.InvoiceNo = @InvoiceNo  

    OPEN CREATFINALTABLE   
    FETCH NEXT FROM CREATFINALTABLE INTO @srNO

    WHILE @@FETCH_STATUS = 0   
    BEGIN   
        SELECT
            CONVERT(varchar, @srNO) AS 'SrNo',
            F.FurnitureName AS 'Description',
            CONVERT(varchar, B.Quantity) AS 'Qnty',
            CONVERT(varchar, U.UnitName) AS 'Unit',
            CONVERT(varchar, B.Rate) AS 'Rate',
            CONVERT(varchar, B.Amount) AS 'Amount' 
        INTO 
            #tempTable
        FROM
            Billing B
        INNER JOIN 
            Furniture F on F.FurnitureID = B.ProductID
        INNER JOIN 
            UnitMaster U ON U.UnitID = B.UnitID
        WHERE
            B.BillingID = @srNO

        INSERT INTO #tempTableNew
            SELECT * 
            FROM #tempTable
            WHERE SrNo = @srNO
            UNION ALL
            SELECT 
                (@srNO) AS 'srNo', 
                ('SIZE: ' + CONVERT(varchar, Length) + ' X' + 
                 CONVERT(varchar, Breadth) + ' X' + CONVERT(varchar, Height)) AS '[Description]',
                ' ' AS 'Qnty', ' ' AS 'Unit', ' ' AS 'Rate', ' ' AS 'Amount' 
            FROM Billing
            WHERE BillingID = @srNO
            UNION ALL
            SELECT 
                (@srNO) AS 'srNo', 
                'SPECS:' AS '[Description]', 
                ' ' AS 'Qnty', ' ' AS 'Unit', ' ' AS 'Rate', ' ' AS 'Amount' 
            FROM #tempTable
            WHERE SrNo = @srNO

           FETCH NEXT FROM CREATFINALTABLE INTO @srNO 

           DROP TABLE #tempTable
    END   

    SELECT * 
    INTO #formated 
    FROM #tempTableNew

    SELECT * FROM #formated

    DROP TABLE #tempTableNew
    DROP Table #formated

    CLOSE CREATFINALTABLE   
    DEALLOCATE CREATFINALTABLE
END

我得到了这个输出。 请帮助我获得所需的输出。 我想根据AreaOfUsage显示基于组的AreaOfUsage 。 帮助我修改此光标，以便我可以获得所需的输出。 先感谢您..

---

样本数据

CREATE TABLE Product 
  ([SrNo] int, [Description] varchar(100), [Size] varchar(100)
, [Specs] varchar(100), [Qnty] int, [Unit] varchar(5)
, [Rate] int, [Amount] int, [AreaOfUsage] varchar(100)) 
; 

INSERT INTO Product 
([SrNo], [Description],[Size], [Specs], [Qnty], [Unit], [Rate], [Amount], [AreaOfUsage]) 
VALUES 
 (1, 'Bed as per design and detail', 'test iu','7.00x4.00x2.00', 1, 'P.RFT', 35000, 35000, 'Bedroom'),
 (2, 'Coffee Table as per design and detail', 'shdjh test','7.00x3.00x2.00', 1, 'P.RFT', 12500, 12500, 'Hall'),
 (3, 'Day Bed as per design in white', 'day bed test','7.00x5.00x3.00', 1, 'P.RFT', 19630, 19630, 'Bedroom') 
 ;

Answer 1

这种数据操作的范围不太适合 SQL，通常会在“表示层”中执行，但这里有一种方法，您可能会发现它很有帮助，它根本不需要使用游标。 它使用 CROSS APPLY 和 VALUES 而不是为每个输入行创建多行输出。 VALUES 区域的视觉布局易于控制。

---

修改后的答案

可在SQL Fiddle 中作为演示使用。

MS SQL Server 2014 架构设置：

CREATE TABLE Product 
  ([SrNo] int, [Description] varchar(100), [Size] varchar(100)
, [Specs] varchar(100), [Qnty] int, [Unit] varchar(5)
, [Rate] int, [Amount] int, [AreaOfUsage] varchar(100)) 
; 

INSERT INTO Product 
([SrNo], [Description],[Size], [Specs], [Qnty], [Unit], [Rate], [Amount], [AreaOfUsage]) 
VALUES 
 (1, 'Bed as per design and detail', 'test iu','7.00x4.00x2.00', 1, 'P.RFT', 35000, 35000, 'Bedroom'),
 (2, 'Coffee Table as per design and detail', 'shdjh test','7.00x3.00x2.00', 1, 'P.RFT', 12500, 12500, 'Hall'),
 (3, 'Day Bed as per design in white', 'day bed test','7.00x5.00x3.00', 1, 'P.RFT', 19630, 19630, 'Bedroom') 
 ; 

查询 1 ：

SELECT
      CASE WHEN rn = 2 THEN concat(t.srNo, '') ELSE '' END   srNo
    , t.Description
    , CASE WHEN rn = 2 THEN concat(t.Qnty, '') ELSE '' END   Qnty
    , CASE WHEN rn = 2 THEN concat(t.Unit, '') ELSE '' END   Unit
    , CASE WHEN rn = 2 THEN concat(t.Rate, '') ELSE '' END   Rate
    , CASE WHEN rn = 2 THEN concat(t.Amount, '') ELSE '' END Amount
FROM (
      SELECT
              p.*
            , row_number() over(partition by AreaOfUsage
                                order by srNo, rn) as grporder
      FROM (
          SELECT
                AreaOfUsage
              , srNo
              , ca.rn
              , ca.Description
              , Qnty
              , Unit
              , Rate
              , Amount
          FROM Product
          CROSS APPLY (
                      VALUES
                            (1, AreaOfUsage),
                            (2, Description),
                            (3, Specs),
                            (4, Size)
                      ) ca (rn, description)
            ) p
      ) t
WHERE (
           (grporder = 1 )
        OR (grporder > 1 and AreaOfUsage <> Description)
      )  
ORDER BY AreaOfUsage, grporder

结果：

| srNo |                           Description | Qnty |  Unit |  Rate | Amount |
|------|---------------------------------------|------|-------|-------|--------|
|      |                               Bedroom |      |       |       |        |
|    1 |          Bed as per design and detail |    1 | P.RFT | 35000 |  35000 |
|      |                        7.00x4.00x2.00 |      |       |       |        |
|      |                               test iu |      |       |       |        |
|    3 |        Day Bed as per design in white |    1 | P.RFT | 19630 |  19630 |
|      |                        7.00x5.00x3.00 |      |       |       |        |
|      |                          day bed test |      |       |       |        |
|      |                                  Hall |      |       |       |        |
|    2 | Coffee Table as per design and detail |    1 | P.RFT | 12500 |  12500 |
|      |                        7.00x3.00x2.00 |      |       |       |        |
|      |                            shdjh test |      |       |       |        |

查询 2 ：

显示详细信息行以帮助理解

      SELECT
              p.*
            , row_number() over(partition by AreaOfUsage
                                order by srNo, rn) as grporder
      FROM (
          SELECT
                AreaOfUsage
              , srNo
              , ca.rn
              , ca.Description
              , Qnty
              , Unit
              , Rate
              , Amount
          FROM Product
          CROSS APPLY (
                      VALUES
                            (1, AreaOfUsage),
                            (2, Description),
                            (3, Specs),
                            (4, Size)
                      ) ca (rn, description)
            ) p

结果：

| AreaOfUsage | srNo | rn |                           Description | Qnty |  Unit |  Rate | Amount | grporder |
|-------------|------|----|---------------------------------------|------|-------|-------|--------|----------|
|     Bedroom |    1 |  1 |                               Bedroom |    1 | P.RFT | 35000 |  35000 |        1 |
|     Bedroom |    1 |  2 |          Bed as per design and detail |    1 | P.RFT | 35000 |  35000 |        2 |
|     Bedroom |    1 |  3 |                        7.00x4.00x2.00 |    1 | P.RFT | 35000 |  35000 |        3 |
|     Bedroom |    1 |  4 |                               test iu |    1 | P.RFT | 35000 |  35000 |        4 |
|     Bedroom |    3 |  1 |                               Bedroom |    1 | P.RFT | 19630 |  19630 |        5 |
|     Bedroom |    3 |  2 |        Day Bed as per design in white |    1 | P.RFT | 19630 |  19630 |        6 |
|     Bedroom |    3 |  3 |                        7.00x5.00x3.00 |    1 | P.RFT | 19630 |  19630 |        7 |
|     Bedroom |    3 |  4 |                          day bed test |    1 | P.RFT | 19630 |  19630 |        8 |
|        Hall |    2 |  1 |                                  Hall |    1 | P.RFT | 12500 |  12500 |        1 |
|        Hall |    2 |  2 | Coffee Table as per design and detail |    1 | P.RFT | 12500 |  12500 |        2 |
|        Hall |    2 |  3 |                        7.00x3.00x2.00 |    1 | P.RFT | 12500 |  12500 |        3 |
|        Hall |    2 |  4 |                            shdjh test |    1 | P.RFT | 12500 |  12500 |        4 |

---

原始回复

请注意，由于您没有提供示例数据，我的列并非都是 varchar，因此我求助于使用 CONCAT(...,'') 将每个非 varchar 列转换为 varchar。 参考这里的演示： SQL Fiddle

设置：

CREATE TABLE Ihavethistable
    ([SrNo] int, [Description] varchar(17), [Specs] varchar(12), [Qnty] int, [Unit] varchar(5), [Rate] int, [Amount] int, [AreaOfUsage] varchar(7))
;

INSERT INTO Ihavethistable
    ([SrNo], [Description], [Specs], [Qnty], [Unit], [Rate], [Amount], [AreaOfUsage])
VALUES
    (1, 'bed as per...', 'test iu', 1, 'P.RFT', 35000, 35000, 'Bedroom'),
    (2, 'coffee table...', 'shdjh test', 1, 'P.RFT', 12500, 12500, 'Hall'),
    (3, 'day bed as per...', 'day bed test', 1, 'P.RFT', 19630, 19630, 'Bedroom')
;

查询：

select
      case when ca.rn = 2 then concat(t.srNo,'') else '' end srNo
    , ca.description
    , case when ca.rn = 2 then concat(t.Qnty,'') else '' end Qnty
    , case when ca.rn = 2 then concat(t.Unit,'') else '' end Unit
    , case when ca.rn = 2 then concat(t.Rate,'') else '' end Rate
    , case when ca.rn = 2 then concat(t.Amount,'') else '' end Amount
from Ihavethistable t
CROSS APPLY (
  VALUES
     (1, AreaOfUsage),
     (2, Description),
     (3, Specs)
  ) ca (rn, description)
order by t.srNo, ca.rn

结果：

| srNo |       description | Qnty |  Unit |  Rate | Amount |
|------|-------------------|------|-------|-------|--------|
|      |           Bedroom |      |       |       |        |
|    1 |     bed as per... |    1 | P.RFT | 35000 |  35000 |
|      |           test iu |      |       |       |        |
|      |              Hall |      |       |       |        |
|    2 |   coffee table... |    1 | P.RFT | 12500 |  12500 |
|      |        shdjh test |      |       |       |        |
|      |           Bedroom |      |       |       |        |
|    3 | day bed as per... |    1 | P.RFT | 19630 |  19630 |
|      |      day bed test |      |       |       |        |