OLD
<< 'NOW' | FB 2.5 Language Reference | ROW_COUNT >>
<< 'NOW' | FB 2.1 Language Reference | ROW_COUNT >>
<< 'NOW' | FB 2.0 Language Reference | ROW_COUNT >>
OLD
Available in: PSQL, triggers only
Changed in: 1.5, 2.0
Description
OLD contains the existing version of a database record just before a deletion or update. Starting with Firebird 2.0 it is
read-only.
Type: Data row
Note: In multi-action triggers – introduced in Firebird 1.5 – OLD is always available. But if the trigger is fired by
an INSERT, there is obviously no pre-existing version of the record. In that situation, reading from OLD will always return NULL; writing to it will cause a runtime exception.
back to top of page
<< 'NOW' | FB 2.5 Language Reference | ROW_COUNT >>
<< 'NOW' | FB 2.1 Language Reference | ROW_COUNT >>
<< 'NOW' | FB 2.0 Language Reference | ROW_COUNT >>
