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Ensure Table has only one row


Ensure Table has only one row

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harsha.majety
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Comments posted to this topic are about the item Ensure Table has only one row
Stephen_W_Dodd
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Sometimes I want to keep a "history" of the different settings, or have more than one set depending on circumstances. In these cases, I use a "current" column (bit) to determine which row I should be using. Just for info.
Eric M Russell
Eric M Russell
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An alternate method to insure only one row (or 2, 3, ... rows) would be to simply define a unique key and check constraint on the table's ID column.

create table tempdb..foo
(
foo_id int not null primary key check (foo_id = 1)
);




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Stephen_W_Dodd (12/8/2011)
Sometimes I want to keep a "history" of the different settings, or have more than one set depending on circumstances. In these cases, I use a "current" column (bit) to determine which row I should be using. Just for info.
Thanks for the tip.
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