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constraint.c

Blame
    • Tom Lane's avatar
      25d9bf2e
      Support deferrable uniqueness constraints. · 25d9bf2e
      Tom Lane authored 
      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
      25d9bf2e
      History
      Support deferrable uniqueness constraints.
      Tom Lane authored 
      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