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path: root/src/backend/commands/constraint.c
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2009-07-29Support deferrable uniqueness constraints.Tom Lane
The current implementation fires an AFTER ROW trigger for each tuple that looks like it might be non-unique according to the index contents at the time of insertion. This works well as long as there aren't many conflicts, but won't scale to massive unique-key reassignments. Improving that case is a TODO item. Dean Rasheed