add new trigger-level variable (for example, :TABLE) to be passed as argument
into common SP from several triggers
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Key: CORE-3663
URL: http://tracker.firebirdsql.org/browse/CORE-3663
Project: Firebird Core
Issue Type: New Feature
Reporter: Pavel Zotov
If we have several tables and many field of them are the same (e.g. same name,
type, size) then it is often need to perform similar actions with such fields.
In case of handling inside triggers we have repeated code so we should place
such code in separate SP.
But this SP do not know the name of table for which it is called and the
parameter like 'a_table' should be passed from each trigger that calls this SP.
I think it will be useful to introduce new "context variable' for triggers a'la
:NEW and :OLD, but it must store the name of :TABLE for that trigger is fired.
So we do not need to hard code literal name of this table when call SP with
common code.
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