Question

以下查询完美无缺，

insert into [EGallery].dbo.[CustomerDetails] 
Select Distinct B.CountyB as 'Mobile' ,  Cast(BuildingB as Varchar(100)) as 'Email' , 
A.CardCode , A.CardName as 'First Name' , '' as 'Last Name' , 
'' as Gender , Cast(A.Address as Varchar(1000)) as 'Address' , Convert(Varchar(10), A.U_BirthDay,105) as 'birthday' , 
Convert(Varchar(10), A.U_AnnivDay ,105) as 'Anniversary' , 
Case 
When A.CardCode Like '%%'+ C.WhsCode +'%%'  Then Convert(Varchar(10) , A.DocDate ,105) 
Else Convert(Varchar(10), (Select X.CreateDate From OCRD X Where X.CardCode = A.CardCode) ,105) End as 'JoinDate' , 
C.WhsCode as 'JoinStore','Open' as Status ,(Select GETDATE()) as CreatedDateTime,(Select GETDATE()) as ProcessDateTime, '' as StatusMSg 
From OINV A 
Inner Join INV12 B On A.DocEntry = B.DocEntry 
Inner Join INV1 C On A.DocEntry = C.DocEntry 
Where C.LineNum = '0'

--B.CountyB not in(select D.Mobile from [EGallery].dbo.[CustomerDetails] D where D.Mobile=B.CountyB)
--not exists (select Mobile from [EGallery].dbo.[CustomerDetails] D where D.Mobile=B.CountyB)

但在我将记录插入[EGallery].dbo.[CustomerDetails]表之前，我需要检查表中是否已存在电话号码。如果记录已存在，则无需再次插入。为此，我添加了一个条件（我在查询中注释掉了）但是它在运行查询时报告了这个错误：

Cannot resolve the collation conflict between "SQL_Latin1_General_CP850_CI_AS" and "Latin1_General_CI_AI" in the equal to operation.

Answer 1

根据here，您必须将COLLATE DATABASE_DEFAULT添加到这样的查询中：

Where C.LineNum = '0' AND
B.CountyB not in(select D.Mobile from [EGallery].dbo.[CustomerDetails] D where D.Mobile COLLATE DATABASE_DEFAULT = B.CountyB COLLATE DATABASE_DEFAULT) AND
not exists (select Mobile from [EGallery].dbo.[CustomerDetails] D where D.Mobile COLLATE DATABASE_DEFAULT = B.CountyB COLLATE DATABASE_DEFAULT)

Answer 2

尝试在查询之前执行此操作：

USE [db name for object INV12]
GO

ALTER TABLE [EGallery].dbo.[CustomerDetails]
  ALTER COLUMN Mobile
    VARCHAR(100) COLLATE Latin1_General_CI_AS NOT NULL

ALTER TABLE INV12
  ALTER COLUMN CountyB
    VARCHAR(100) COLLATE Latin1_General_CI_AS NOT NULL

UPDATE1：如果您对其中一个列或两个列都有索引，则需要删除它并在更改新的排序规则后再次创建索引。

Answer 3

我建议您使用MERGE语句，因为它

根据与源表的连接结果对目标表执行插入，更新或删除操作。例如，您可以根据另一个表中的差异在一个表中插入，更新或删除行来同步两个表。

SQL查询问题避免重复INSERT INTO SELECT？

3 个答案: