Check constraint with condition

Hello All.

I need a constraint against records created/amended that have an invoicenumber beginning with CN%, ensure the analysiscode is not like the value ' %'. As some people are entering spaces in the analysiscode.

Anyway this logic does not work ...

alter table invoicesalesanalys
add constraint check_anaLYSISCODE
check (ANALYSIS1CODE not like ' %' where invoicenumber like 'CN%')

I need a way of tackling it - can anyone help?

Thanks

I'd think that something like ...

Code:

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check (NOT (ANALYSIS1CODE like ' %' and invoicenumber like 'CN%'))

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... or ...

Code:

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check (ANALYSIS1CODE not like ' %' or invoicenumber not like 'CN%')

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Hmm...

Yes the AND logic works correctly.

basically check those 2 conditions are not true.

Thankyou very much.

Suresh