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Table variables do not re-initialize in a loop

Posted By:      Posted Date: April 14, 2011    Points: 0   Category :

Hi all,

I came across a peculiar problem while working with table variables. Here is a simple code to demonstrate it:


declare @c tinyint

set @c = 1

while @c <= 2
    declare @t table (srn int identity(1,1), name varchar(5))
    insert into @t(name) select 'A'
    insert into @t(name) select 'B'

    select * from @t
    set @c = @c + 1

The table variable does not get re-initialized and continues with the same identity seed for the next iteration.

I was wondering if anybody can throw some light on this behaviour of table variables where they do not get re-initialized with a declare statement. I worked around this problem by creating a temporary table and dropping at the end of each iteration nevertheless I was wondering if any tweak can help with using the table variable.



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