Question

假设我有下表：

camp_1, camp_2
0, 048
00, 048
000, 042
000, 043

我现在想将这些值插入到新表dim_promotion中，它应该如下所示：

PromotionID, CampaignID, CouponID
1, 1, 1
2, 2, 1,
3, 3, 2,
4, 3, 3

我知道如何填写表格（dim_campaigns和dim_coupons，它们支持CampaignID和CouponID）：

    INSERT INTO [REPORTING].dbo.dim_campaigns
SELECT DISTINCT
camp_2  AS CampaignID
FROM [reporting2].[dbo].[reporting_rawdata_v2]

相应三个表（dim_coupons，dim_campaigns和dim_promotion）的主键都设置为“Identity Specification = YES”

那我怎么填补dim_promotion？什么是自然秩序？ FIrst派生dim_campaigns和dim_coupons，然后将其变为dim_promotion或反过来？

编辑：我有以下数据库模型（仅摘录）我只是指黄色字段。

现在，我们只有大表（rawdatatbl）存储所有数据（CampaignCode，CouponCode，Campaign Name，CouponName）。这不是真正有效的，这就是我想强制重组模型的原因（见截图）。因此，由于目前数据根本不包含任何ID，我需要ID来填充新表dim_campaigns和dim_coupons。这意味着：要填充dim_campaigns，我将在当前的rawdatatbl上运行SELECT DISTINCT campaign_code，然后将其插入dim_campaigns（CampaignID通过使用auto_increment自动填充，CampaignName填充'Dummy'）。我可以为dim_coupons做同样的事情。但是，如何使用此数据初始化Dim_promotion表？或者，将当前数据从rawdatatbl转换为ID的最佳流程是什么？ enter image description here

Answer 1

一种可能的方法是： -

---- insert your all distinct Campaign data 
Insert Into dim_campaigns(CampaignCode,CampaignName)
Select  Distinct
         cm.CampaignCode
        ,cm.CampaignName
From    rawdatatbl As cm

---- insert your all distinct Coupon data 
Insert Into dim_coupons(CouponCode,CouponName)
Select  Distinct
         c.CouponCode
        ,c.CouponName
From    rawdatatbl As c


Declare  @Total             Int
        ,@Inc               Int
        ,@RowId             Int
        ,@CampaignCode      Varchar(100)
        ,@CouponCode        Varchar(100)

        ----Primary keys
        ,@CampaignId        Int
        ,@CouponId          Int
        ,@PromotionID       Int



Select   @CampaignCode = ''
        ,@CouponCode = ''

----loop through one by one and take necessary action
Select   @Total = Count(1)
        ,@Inc = 0
        ,@RowId = 0
From    rawdatatbl As c With (Nolock)

While (@Inc < @Total)
Begin
    Select  Top 1
             @RowId = [TableUniqueId]
            ,@CampaignCode = c.CampaignCode
            ,@CouponCode = c.CouponCode
            ---- others columns
    From    rawdatatbl As c
    Where   [TableUniqueId] > @RowId
    Order By [TableUniqueId] Asc

    Select  @CampaignId = dc.CampaignId
    From    dim_campaigns As dc
    Where   dc.CampaignCode = @CampaignCode

    Select  @CouponId = dc.CouponId
    From    dim_coupons As dc
    Where   dc.CouponCode = @CouponCode

    If (@CampaignId > 0 And @CouponId > 0)
    Begin
        Insert Into dim_promotion(CampaignID,CouponID)
        Select  @CampaignId,@CouponId

        Select  @PromotionID = @@Identity

        ---- other operation insert/update based on @PromotionID you can do here.
    End


    Select   @Inc = @Inc + 1
            ,@CampaignCode = ''
            ,@CouponCode = ''
            ,@CampaignId = 0
            ,@CouponId = 0
End

使用ID在表中插入不同的值

1 个答案: