Firebird Documentation Index → Firebird 2.5 Language Ref. Update → PSQL statements → BEGIN ... END blocks may be empty
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BEGIN ... END blocks may be empty

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Find a more recent version at Firebird 5.0 Language Reference: BEGIN ... END

Available in: PSQL

Changed in: 1.5

Description: BEGIN ... END blocks may be empty in Firebird 1.5 and up, allowing you to write stub code without having to resort to dummy statements.

Example: 

create trigger bi_atable for atable
active before insert position 0
as
begin
end
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Firebird Documentation Index → Firebird 2.5 Language Ref. Update → PSQL statements → BEGIN ... END blocks may be empty