CHECK CONSTRAINT blunder(s)

Hi,

Can someone clue me in as to proper syntax for adding a not null
check constraint? I've fumbled around a bit without much luck
and I don't see this covered in the alter table section of the
interactive docs.

My pseudo code is:
ALTER TABLE doof ADD CONSTRAINT bleibt_doof NOT NULL (record_id);
But obviously this fails.

TIA - Cheers
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