SQL Server过程 - 关键字“WHEN”附近的语法不正确

Question

USE [DATABASE_NAME]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[upsert_sfdc_account] 
    @sfdc_account_S [dbo].[sfdc_account_type] READONLY
AS
BEGIN
    /* SELECT * FROM [dbo].[sfdc_account] */

    DECLARE @SetColumns VARCHAR(8000) = (SELECT CONCAT(QUOTENAME(COLUMN_NAME),' = S.',QUOTENAME(COLUMN_NAME),',',CHAR(10))
                                         FROM INFORMATION_SCHEMA.COLUMNS 
                                         WHERE TABLE_NAME = 'sfdc_account'  
                                         FOR XML PATH(''))

    DECLARE @Columns VARCHAR(4000) = (SELECT QUOTENAME(COLUMN_NAME) + ','
                                      FROM INFORMATION_SCHEMA.COLUMNS 
                                      WHERE TABLE_NAME = 'sfdc_account' 
                                      FOR XML PATH(''))

  SET @SetColumns = SUBSTRING(@SetColumns, 53, LEN(@SetColumns) - 54)
  SET @Columns = SUBSTRING(@Columns, 6, LEN(@Columns) - 6)

  SELECT @SetColumns
  SELECT @Columns

  MERGE [dbo].[sfdc_account] AS T
  USING @sfdc_account_S AS S
  ON (T.Salesforce_Id = S.Salesforce_Id)
  WHEN MATCHED THEN
    UPDATE SET @SetColumns
  WHEN NOT MATCHED THEN
    INSERT(@Columns)
    VALUES(@Columns)
END

我收到此错误：

消息156，级别15，状态1，过程upsert_sfdc_account，第40行 关键字“WHEN”附近的语法不正确。

我似乎无法正确执行此操作。我错过了什么？

子字符串产生以下值：

@SetColumns

[IsDeleted] = S. [IsDeleted]，[MasterRecordId] = S. [MasterRecordId]，[Name] = S. [Name]，[Type] = S. [Type]，[RecordTypeId] = S. [RecordTypeId]， [ParentId] = S. [ParentId]，[BillingStreet] = S. [BillingStreet]，[BillingCity] = S. [BillingCity]，[BillingState] = S. [BillingState]，[BillingPostalCode] = S. [BillingPostalCode]， [BillingCountry] = S. [BillingCountry]，[BillingStateCode] = S. [BillingStateCode]，[BillingCountryCode] = S. [BillingCountryCode]，[BillingLatitude] = S. [BillingLatitude]，[BillingLongitude] = S. [BillingLongitude]， [BillingGeocodeAccuracy] = S. [BillingGeocodeAccuracy]，[ShippingStreet] = S. [ShippingStreet]，[ShippingCity] = S. [ShippingCity]，[ShippingState] = S. [ShippingState]，[ShippingPostalCode] = S. [ShippingPostalCode]， [ShippingCountry] = S. [ShippingCountry]，[ShippingStateCode] = S. [ShippingStateCode]，[ShippingCountryCode] = S. [ShippingCountryCode]，[ShippingLatitude] = S. [ShippingLatitude]，[ShippingLongitude] = S. [ShippingLongitude]， [ShippingGeocodeAccuracy] = S. [Sh ippingGeocodeAccuracy]，[Phone] = S. [Phone]，[Fax] = S. [Fax]，[AccountNumber] = S. [AccountNumber]，[Website] = S. [Website]，[PhotoUrl] = S. [ PhotoUrl]，[Sic] = S. [Sic]，[Industry] = S. [Industry]，[AnnualRevenue] = S. [AnnualRevenue]，[NumberOfEmployees] = S. [NumberOfEmployees]，[Ownership] = S. [所有权]，[TickerSymbol] = S. [TickerSymbol]，[描述] = S. [描述]，[评级] = S. [评级]，[网站] = S. [网站]，[CurrencyIsoCode] = S. [ CurrencyIsoCode]，[OwnerId] = S. [OwnerId]，[CreatedDate] = S. [CreatedDate]，[CreatedById] = S. [CreatedById]，[LastModifiedDate] = S. [LastModifiedDate]，[LastModifiedById] = S. [ LastModifiedById]，[SystemModstamp] = S. [SystemModstamp]，[LastActivityDate] = S. [LastActivityDate]，[LastViewedDate] = S. [LastViewedDate]，[Sales_Ready__c] = S. [Sales_Ready__c]

@列

[Salesforce_Id]，[请将isDeleted]，[MasterRecordId]，[姓名]，[类型]，[RecordTypeId]，[的ParentId]，[BillingStreet]，[结算城市]，[BillingState]，[BillingPostalCode]，[BillingCountry]，[BillingStateCode ]，[BillingCountryCode]，[BillingLatitude]，[BillingLongitude]，[BillingGeocodeAccuracy]，[ShippingStreet]，[ShippingCity]，[ShippingState]，[ShippingPostalCode]，[ShippingCountry]，[ShippingStateCode]，[ShippingCountryCode]，[ShippingLatitude] [ShippingLongitude]，[ShippingGeocodeAccuracy]，[电话]，[传真]，[账户号码]，[公司网址]，[PhotoUrl]，[原文]，[行业]，[AnnualRevenue]，[NumberOfEmployees]，[所有权]，[TickerSymbol ]，[描述]，[评分]，[网站]，[CurrencyIsoCode]，[OWNERID]，[CreatedDate]，[CreatedById]，[LastModifiedDate]，[LastModifiedById]，[SystemModstamp]，[LastActivityDate]，[LastViewedDate] [Sales_Ready__c]

Answer 1

您需要一个分号才能结束合并。

https://docs.microsoft.com/en-us/sql/t-sql/statements/merge-transact-sql

MERGE语句需要使用分号（;）作为语句终止符。