将行从一张表移到另一张表? [英] Move row from one table to another?
本文介绍了将行从一张表移到另一张表?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有两个具有相同列定义的表.我需要将一行从一个表移动(而不是复制)到另一个表.在我开始使用 INSERT INTO/DELETE(在事务中)之前,有没有更聪明的方法?
I have two tables with the same column definitions. I need to move (not copy) a row from one table to another. Before I go off and use INSERT INTO/DELETE (in a transaction), is there a smarter way?
SQL Server 2005
SQL Server 2005
推荐答案
对于 SQL Server 2005 及更高版本,请尝试 OUTPUT 子句 (Transact-SQL) 子句:
for SQL Server 2005 and up, try the OUTPUT Clause (Transact-SQL) clause:
DELETE OldTable
OUTPUT DELETED.col1, DELETED.col2...
INTO NewTable
WHERE ID=...
工作示例:
DECLARE @OldTable table(col1 int, col2 varchar(5), col3 char(5), col4 datetime)
DECLARE @NewTable table(col1 int, column2 varchar(5), col3 int , col_date char(23), extravalue int, othervalue varchar(5))
INSERT @OldTable VALUES (1 , 'AAA' ,'A' ,'1/1/2010' )
INSERT @OldTable VALUES (2 , 'BBB' ,'12' ,'2010-02-02 10:11:22')
INSERT @OldTable VALUES (3 , 'CCC' ,null ,null )
INSERT @OldTable VALUES (4 , 'B' ,'bb' ,'2010-03-02' )
DELETE @OldTable
OUTPUT DELETED.col1
,DELETED.col2
,CASE
WHEN ISNUMERIC(DELETED.col3)=1 THEN DELETED.col3
ELSE NULL END
,DELETED.col4
,CONVERT(varchar(5),DELETED.col1)+'!!'
INTO @NewTable (col1, column2, col3, col_date, othervalue)
OUTPUT 'Rows Deleted: ', DELETED.* --this line returns a result set shown in the OUTPUT below
WHERE col1 IN (2,4)
SELECT * FROM @NewTable
输出:
col1 col2 col3 col4
-------------- ----------- ----- ----- -----------------------
Rows Deleted: 2 BBB 12 2010-02-02 10:11:22.000
Rows Deleted: 4 B bb 2010-03-02 00:00:00.000
(2 row(s) affected)
col1 column2 col3 col_date extravalue othervalue
----------- ------- ----------- ----------------------- ----------- ----------
2 BBB 12 Feb 2 2010 10:11AM NULL 2!!
4 B NULL Mar 2 2010 12:00AM NULL 4!!
(2 row(s) affected)
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