On 8/11/15 12:47 PM, Dmitry Igrishin wrote:
tg_trigtuple: I'm not sure why "skip the operation" is here: "if you don't want to replace the row with a different one (in the case of INSERT) or skip the operation"
Returning NULL from a row-level BEFORE trigger skips the operation which fired the trigger. So for an INSERT, any triggers which would otherwise fire after the current trigger are not fired, and the row is not INSERTed into the table.
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