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not exists

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AskSQLTeam
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Posted - 2001-02-01 : 11:53:31

Amit writes "What is the use of not exists command??

Can u explain in this context
if (@CheckMode < 10 or @CheckMode = 30) and
not exists (select 1 from service_parameters
where ser_type=5 and pool_number=4)
return 30

"

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