Thomas Hallgren <[EMAIL PROTECTED]> writes: > Perhaps you should either change this behavior or make a note it in > "Writing Trigger Functions in C"?
Okay, I've changed the text thusly: diff -r1.35 trigger.sgml 434,435c434,437 < A trigger function must return either <symbol>NULL</> or a < <structname>HeapTuple</> pointer. Be careful to return either --- > A trigger function must return either a > <structname>HeapTuple</> pointer or a <symbol>NULL</> pointer > (<emphasis>not</> a SQL NULL, that is, do not set isNull true). > Be careful to return either regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match