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我在表 1 上有这样的数据：在此处输入图像描述

IdT1 , IdT1组

11 , 30

12 , 30

13 , 30

并且在表 2 上喜欢：在此处输入图像描述

IdT2、IdT1、详细信息、同步

1 , 11 , A , 插入

2 , 11 , B , 插入

3、12、A、插

4、12、C、插

我有这样的 tblSource：在此处输入图像描述

IdT2，IdT1，详细信息

1、11、A

2、11、B

5、11、C

我从以下位置获得了 tblSource：

Select Top 1 From Tbl2 where IdT1Group = 30

我希望我可以更新 Tbl2 成为：在此处输入图像描述

IdT2,   IdT1,   Detail, Synchronise

1       11        A     updated

2       11        B     updated

5       11        C     inserted

3       12        A     updated

4       12        B     updated

6       12        C     inserted

7       13        A     inserted

8       13        B     inserted

9       13        C     inserted

这是我用来得到我期望的代码：

    Declare @IdT1Group integer = 30
;WITH tblTbl2
    AS (SELECT table2.* FROM table2 INNER JOIN table1 ON table2.IdT1 = table1.IdT1 AND IdT1Group = @IdT1Group)
    MERGE INTO tblTbl2 AS tblTarget
    USING (SELECT tblT2.*, table1.IdT1 AS T1Id FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group)
            AS tblSource ON tblTarget.IdT1 = tblSource.T1Id And tblTarget.IdT2 = tblSource.IdT2
    WHEN MATCHED THEN
        UPDATE 
        SET     Detail = tblSource.Detail, Synchronise = 'updated'
    WHEN NOT MATCHED BY SOURCE THEN
        DELETE
    WHEN NOT MATCHED BY TARGET THEN            
        INSERT (IdT1, Detail, Synchronise)
        VALUES (tblSource.T1Id, tblSource.Detail, 'inserted');

但这就是我得到的：在此处输入图像描述

IdT2    IdT1    Detail  Synchronise
1       11        A     updated
2       11        B     updated
5       11        C     inserted
6       12        A     inserted
7       12        B     inserted
8       12        C     inserted
9       13        A     inserted
10      13        B     inserted
11      13        C     inserted

这段代码让我做一些试验：

drop table if exists table1
create table table1(idt1 int, idt1group int)

insert into table1 values (11,30),(12,30),(13,30)

drop table if exists table2

create table table2 (idt2 int, idt1 int, detail varchar(2), Synchronise varchar(15))

insert into table2 values (1,11,'A', 'Inserted'),(2,11,'B', 'Inserted'),
(3,12,'A', 'Inserted'),
(4,12,'B', 'Inserted')

drop table if exists tbl2

create table tbl2 (idt2 int, idt1 int, detail varchar(2), Synchronise varchar(15))
insert into tbl2 values (1, 11,'A', 'Inserted'), 
(2,11,'B', 'Inserted'), (5,11,'C', 'Inserted')

Declare @IdT1Group integer = 30

SELECT table1.IdT1 AS T1Id, tblT2.* FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group

;WITH tblTbl2
    AS (SELECT table2.* FROM table2 INNER JOIN table1 ON table2.IdT1 = table1.IdT1 AND IdT1Group = @IdT1Group)
    MERGE INTO tblTbl2 AS tblTarget
    USING (SELECT tblT2.*, table1.IdT1 AS T1Id FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group)
            AS tblSource ON tblTarget.IdT1 = tblSource.T1Id And tblTarget.IdT2 = tblSource.IdT2
    WHEN MATCHED THEN
        UPDATE 
        SET     Detail = tblSource.Detail, Synchronise = 'updated'
    WHEN NOT MATCHED BY SOURCE THEN
        DELETE
    WHEN NOT MATCHED BY TARGET THEN            
        INSERT (IdT1, Detail, Synchronise)
        VALUES (tblSource.T1Id, tblSource.Detail, 'inserted');

select * From Table2
4

2 回答 2

0

尝试这个

--data query

drop table  table1
create table table1(idt1 int, idt1group int)

insert into table1 values (11,30),(12,30),(13,30)

drop table  table2

create table table2 (idt2 int, idt1 int, detail varchar(2), Synchronise varchar(15))

insert into table2 values (1,11,'A', 'Inserted'),(2,11,'B', 'Inserted'),
(3,12,'A', 'Inserted'),
(4,12,'B', 'Inserted')

drop table  tbl2

create table tbl2 (idt2 int, idt1 int, detail varchar(2), Synchronise varchar(15))
insert into tbl2 values (1, 11,'A', 'Inserted'), 
(2,11,'B', 'Inserted'), (5,11,'C', 'Inserted')


--main query

Declare @IdT1Group integer = 30

SELECT table1.IdT1 AS T1Id, tblT2.* FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group

MERGE table2 AS tblTarget
--traget table 
USING 


--data src
(SELECT table1.IdT1 AS T1Id, tblT2.* FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group)
AS tblSource ON tblTarget.IdT1 = tblSource.T1Id And tblTarget.IdT2 = tblSource.IdT2
WHEN NOT MATCHED BY SOURCE THEN 
UPDATE 
SET   Synchronise = 'updated';



MERGE table2 AS tblTarget
--traget table 
USING 


--data src
(SELECT table1.IdT1 AS T1Id, tblT2.* FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group)
AS tblSource ON tblTarget.IdT1 = tblSource.T1Id And tblTarget.IdT2 = tblSource.IdT2
WHEN MATCHED THEN
UPDATE 
SET     Detail = tblSource.Detail, Synchronise = 'updated'

--insert query
WHEN NOT MATCHED BY TARGET THEN            
INSERT ([idt2],IdT1, Detail, Synchronise)
VALUES (tblSource.idt2,tblSource.T1Id, tblSource.Detail, 'inserted');

select * From Table2
于 2019-06-24T14:46:30.960 回答
0

您正在删除给定数据

3       12        A     updated

4       12        B     updated

并且此数据不存在于

Declare @IdT1Group integer = 30

SELECT table1.IdT1 AS T1Id, tblT2.* FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group

因此，如果您仍想更新它，那就是删除数据，然后您必须检查数据是否不存在然后更新它。

Declare @IdT1Group integer = 30

SELECT table1.IdT1 AS T1Id, tblT2.* FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group


MERGE table2 AS tblTarget
--traget table 
USING 


--data src
(SELECT table1.IdT1 AS T1Id, tblT2.* FROM tbl2 AS tblT2 CROSS JOIN table1 where IdT1Group = @IdT1Group)
AS tblSource ON tblTarget.IdT1 = tblSource.T1Id And tblTarget.IdT2 = tblSource.IdT2
WHEN MATCHED THEN
UPDATE 
SET     Detail = tblSource.Detail, Synchronise = 'updated'

--Delete QUery
WHEN NOT MATCHED BY SOURCE THEN
DELETE

--insert query
WHEN NOT MATCHED BY TARGET THEN            
INSERT ([idt2],IdT1, Detail, Synchronise)
VALUES (tblSource.idt2,tblSource.T1Id, tblSource.Detail, 'inserted');

select * From Table2

如果您还有问题，请告诉我

于 2019-06-24T10:37:55.553 回答