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USE of OUTPUT Clause in Sql Server

SQL Server 2005 introducted the OUTPUT clause . We can use the OUTPUT clause with DML statements (INSERT, DELETE, UPDATE) to return information from modified rows.

Following example  may helps you understand OUTPUT clause in sql server.      

--1st step




fName VARCHAR(40),

lName VARCHAR(40)


--2nd step

INSERT INTO #tmp (fName,lName)


INSERT INTO #tmp (fName,lName)


INSERT INTO #tmp (fName,lName)


--3rd step

INSERT INTO #tmp (fName,lName)



--4th step



WHERE fName='Anil'

--5th step

UPDATE #tmp  SET fName='Shiva'  OUTPUT INSERTED.fName,INSERTED.lName WHERE fName='Dilip'

--6th step


--7th step


Result by step respectively

(1 row(s) affected)
(1 row(s) affected)

(1 row(s) affected)

fName                                    lName
---------------------------------------- ----------------------------------------

Nirmit                                   Katiyar
(1 row(s) affected)

fName                                    lName
---------------------------------------- ----------------------------------------

Anil                                     Singh

(1 row(s) affected)

fName                                    lName
---------------------------------------- ----------------------------------------

Shiva                                    Singh

(1 row(s) affected)
id          fName                                    lName

----------- ---------------------------------------- -------------------------------------
1           Shiva                                    Singh

3           Param                                    Tripathi

4           Nirmit                                   Katiyar
(3 row(s) affected)

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