Checksum_agg in sql server . Kindly give an example regarding this

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What is the use of CHECKSUM_AGG in sql server ? How it can be used

Kindly give one exmple regarding this

Posted 7-Nov-13 3:16am

anurag19289

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phil.o · Answer 1 · 2013-11-07T03:18:00

Solution 1

CHECKSUM_AGG (Transact-SQL)[^]

Posted 7-Nov-13 3:18am

phil.o

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anurag19289 7-Nov-13 10:44am

that is not clear...give me your own example

phil.o 7-Nov-13 10:59am

What exactly is not clear? I can't imagine a better way to explain it than the link I provided.
What don't you understand?

anurag19289 7-Nov-13 11:21am

i tried this :

create table checksumcheck
(
value int
)

insert into checksumcheck
select 13
union all select 23
union all select 45
union all select 55
union all select 66

SELECT CHECKSUM_AGG(CAST(value AS int))
FROM checksumcheck

--i got o/p =66
--now how this 66 is the output.
--is it random

--when i update any one column .the o/p changes.
--Where this checksum_agg can be useful ? In what scenario ?