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我被授予使用游标来复制表格的任务。现在说我有3张表复制自：Company，Person_Link & Person。这是一个“一对多”的关系，因为一个公司可以有多个人。SQL Server - 使用游标复制多个表格
这是我的代码：
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[DuplicateCompanyInfo]
@Comp_CompanyId NVARCHAR(80)
AS
BEGIN
SET NOCOUNT ON;
DECLARE @CompanyID NVARCHAR(30),
@PersonID NVARCHAR(30),
@PersonLinkID NVARCHAR(30),
@AddressLinkID NVARCHAR(30),
@AddressID NVARCHAR(30),
@PhoneLinkID NVARCHAR(30),
@PhoneID NVARCHAR(30)
EXEC @companyId = crm_next_id 5
EXEC @PersonId = crm_next_id 13
EXEC @PersonLinkId = crm_next_id 31
EXEC @AddressLinkId = crm_next_id 21
EXEC @AddressId = crm_next_id 1
EXEC @PhoneLinkId = crm_next_id 10208
EXEC @PhoneId = crm_next_id 14
-- Add Company
INSERT INTO Company
(
Comp_CompanyId, Comp_PrimaryPersonId, Comp_PrimaryAddressId, Comp_Name, Comp_Type, Comp_Status, Comp_CreatedBy,
Comp_CreatedDate, Comp_UpdatedBy, Comp_UpdatedDate, Comp_TimeStamp, Comp_SecTerr, Comp_WebSite
)
SELECT @companyId, @PersonId, @AddressId, Comp_Name, Comp_Type, Comp_Status, Comp_CreatedBy,
Comp_CreatedDate, '1', GETDATE(), Comp_TimeStamp, Comp_SecTerr, Comp_WebSite
FROM Company
WHERE Comp_CompanyId = @comp_companyid
------- PersonLink Cursor ---------------------------------------------
-- Declare Variables
DECLARE @c_PeLi_PersonLinkId NVARCHAR(30)
DECLARE @c_PeLi_PersonId NVARCHAR(30)
DECLARE @c_PeLi_CompanyID NVARCHAR(30)
DECLARE @c_PeLi_CreatedBy NVARCHAR(30)
DECLARE @c_PeLi_CreatedDate NVARCHAR(30)
DECLARE @c_PeLi_UpdatedBy NVARCHAR(30)
DECLARE @c_PeLi_UpdatedDate NVARCHAR(30)
DECLARE @c_PeLi_TimeStamp NVARCHAR(30)
--Declare Cursor
DECLARE @getPeLiID CURSOR
SET @getPeLiID= CURSOR FOR
SELECT PeLi_PersonLinkId, PeLi_PersonId, PeLi_CompanyID, PeLi_CreatedBy, PeLi_CreatedDate, PeLi_UpdatedBy,
PeLi_UpdatedDate, PeLi_TimeStamp
FROM Person_Link
INNER JOIN Person
ON PeLi_PersonId = Pers_PersonId
AND PeLi_CompanyID = @comp_companyid
--Open Cursor & fetch 1st row into variables
OPEN @getPeLiID
FETCH NEXT FROM @getPeLiID INTO @c_PeLi_PersonLinkId, @c_PeLi_PersonId, @c_PeLi_CompanyID, @c_PeLi_CreatedBy,
@c_PeLi_CreatedDate, @c_PeLi_UpdatedBy, @c_PeLi_UpdatedDate, @c_PeLi_TimeStamp
--Fetch successful
--Check for a new row
WHILE @@FETCH_STATUS = 0
BEGIN
--EXEC @PersonLinkId = crm_next_id 31
INSERT INTO Person_Link
(
PeLi_PersonLinkId, PeLi_PersonId, PeLi_CompanyID, PeLi_CreatedBy, PeLi_CreatedDate, PeLi_UpdatedBy,
PeLi_UpdatedDate, PeLi_TimeStamp
)
VALUES
(
@PersonLinkId, @PersonId, @CompanyId, @c_PeLi_CreatedBy, @c_PeLi_CreatedDate, '1', GETDATE(), @c_PeLi_TimeStamp
)
--Get next available row into variables
FETCH NEXT FROM @getPeLiID INTO @c_PeLi_PersonLinkId, @c_PeLi_PersonId, @c_PeLi_CompanyID, @c_PeLi_CreatedBy,
@c_PeLi_CreatedDate, @c_PeLi_UpdatedBy, @c_PeLi_UpdatedDate, @c_PeLi_TimeStamp
END
CLOSE @getPeLiID
DEALLOCATE @getPeLiID
------- Person Cursor -------------------------------------------------
-- Declare Variables
DECLARE @c_Pers_PersonId NVARCHAR(30)
DECLARE @c_Pers_CompanyId NVARCHAR(30)
DECLARE @c_Pers_PrimaryUserId NVARCHAR(30)
DECLARE @c_Pers_FirstName NVARCHAR(30)
DECLARE @c_Pers_SecTerr NVARCHAR(30)
DECLARE @c_Pers_CreatedBy NVARCHAR(30)
DECLARE @c_Pers_CreatedDate NVARCHAR(30)
DECLARE @c_Pers_UpdatedBy NVARCHAR(30)
DECLARE @c_Pers_UpdatedDate NVARCHAR(30)
DECLARE @c_Pers_TimeStamp NVARCHAR(30)
--Declare Cursor
DECLARE @getPersID CURSOR
SET @getPersID= CURSOR FOR
SELECT Pers_PersonId, Pers_CompanyId, Pers_PrimaryUserId, Pers_FirstName, Pers_SecTerr, Pers_CreatedBy,
Pers_CreatedDate, Pers_UpdatedBy, Pers_UpdatedDate, Pers_TimeStamp
FROM Person
INNER JOIN Person_Link
ON Pers_PersonId = PeLi_PersonId
AND PeLi_CompanyID = @comp_companyid
--Open Cursor & fetch 1st row into variables
OPEN @getPersID
FETCH NEXT FROM @getPersID INTO @c_Pers_PersonId, @c_Pers_CompanyId, @c_Pers_PrimaryUserId, @c_Pers_FirstName,
@c_Pers_SecTerr, @c_Pers_CreatedBy, @c_Pers_CreatedDate, @c_Pers_UpdatedBy,
@c_Pers_UpdatedDate, @c_Pers_TimeStamp
--Fetch successful
--Check for a new row
WHILE @@FETCH_STATUS = 0
BEGIN
--EXEC @PersonId = crm_next_id 13
INSERT INTO Person
(
Pers_PersonId, Pers_CompanyId, Pers_PrimaryUserId, Pers_FirstName, Pers_SecTerr, Pers_CreatedBy,
Pers_CreatedDate, Pers_UpdatedBy, Pers_UpdatedDate, Pers_TimeStamp
)
VALUES
(
@PersonId, @companyId, @c_Pers_PrimaryUserId, @c_Pers_FirstName, @c_Pers_SecTerr, @c_Pers_CreatedBy,
@c_Pers_CreatedDate, '1', GETDATE(), @c_Pers_TimeStamp
)
--Get next available row into variables
FETCH NEXT FROM @getPersID INTO @c_Pers_PersonId, @c_Pers_CompanyId, @c_Pers_PrimaryUserId, @c_Pers_FirstName,
@c_Pers_SecTerr, @c_Pers_CreatedBy, @c_Pers_CreatedDate, @c_Pers_UpdatedBy,
@c_Pers_UpdatedDate, @c_Pers_TimeStamp
END
CLOSE @getPersID
DEALLOCATE @getPersID
这是我的表结构：
公司表：
comp_companyid | comp_primarypersonid | comp_primaryaddressid | comp_name
-------------------------------------------------------------------------
2 | 2 | 2 | company 2
3 | 3 | 3 | company 3
人表：
pers_personid | pers_companyid | pers_primaryaddressid | pers_name
-------------------------------------------------------------------------
2 | 2 | 2 | person 2
3 | 3 | 3 | person 3
4 | 2 | 2 | person 4
人链接表：
peli_personlinkid | peli_personid | peli_companyid
-------------------------------------------------------------------------
2 | 2 | 2
3 | 3 | 3
我执行存储过程只有1人属于1家公司时，有没有问题，但是当公司有2人或以上，第二人行不会被复制，只有第一个。
错误消息将弹出：
消息2627，级别14，状态1，过程DuplicateCompanyInfo，行80
违反PRIMARY KEY约束 'PK__Person_L__BCD268642CF2ADDF' 的。不能在对象'dbo.Person_Link'中插入重复键。消息2627，级别14，状态1，过程DuplicateCompanyInfo，PRIMARY KEY约束 'PK__Person__381A5AC529221CFB' 的线141
冲突。不能在对象'dbo.Person'中插入重复键。
我可以通过删除注释--EXEC @PersonLinkId = crm_next_id 31 & --EXEC @PersonID = crm_next_id 13后光标就开始，这样就会产生一个新的ID每次复制解决这个问题。但它会导致不会记录，因为它们中的每一个都将基于其表重复生成自己的新ID，而不是应用彼此的外键。
请帮助或引导我通过！预先感谢您的时间&努力！ Desmond
为什么使用游标？这似乎是过度复杂的问题？ –
嗨，先生，请参阅我的评论，回复伊姆兰的答案下面的解释。表格中可能有很多重复的记录，所以我想用游标一行一行地浏览。 –