Firebird Documentation Index → Firebird 1.5 Language Ref. Update → DDL statements → CREATE DOMAIN
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CREATE DOMAIN

Context variables as defaults

Available in: DSQL, ESQL

Context variables as defaults

Changed in: IB

Description: Any context variable that is assignment-compatible to the new domain's datatype can be used as a default. This was already the case in InterBase 6, but the Language Reference only mentioned USER.

Example: 

create domain DDate as
  date
  default current_date
  not null
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Firebird Documentation Index → Firebird 1.5 Language Ref. Update → DDL statements → CREATE DOMAIN