mirror of
https://github.com/FirebirdSQL/firebird.git
synced 2025-01-22 20:43:02 +01:00
31 lines
840 B
Plaintext
31 lines
840 B
Plaintext
|
---------------
|
||
|
|
Domains in PSQL
|
||
|
|
---------------
|
||
|
|
|
||
|
|
Function:
|
||
|
|
Allow usage of domains in PSQL.
|
||
|
|
|
||
|
|
Author:
|
||
|
|
Adriano dos Santos Fernandes <adrianosf@uol.com.br>
|
||
|
|
|
||
|
|
Syntax rules:
|
||
|
|
data_type ::=
|
||
|
|
<builtin_data_type>
|
||
|
|
| <domain_name>
|
||
|
|
| TYPE OF <domain_name>
|
||
|
|
|
||
|
|
Examples:
|
||
|
|
CREATE DOMAIN DOM AS INTEGER;
|
||
|
|
|
||
|
|
CREATE PROCEDURE SP (I1 TYPE OF DOM, I2 DOM) RETURNS (O1 TYPE OF DOM, O2 DOM)
|
||
|
|
AS
|
||
|
|
DECLARE VARIABLE V1 TYPE OF DOM;
|
||
|
|
DECLARE VARIABLE V2 DOM;
|
||
|
|
BEGIN
|
||
|
|
END
|
||
|
|
|
||
|
|
Notes:
|
||
|
|
1. TYPE OF gets only the type of the domain. It don't use constraints and default values.
|
||
|
|
2. A new field RDB$VALID_BLR was added in RDB$RELATIONS and RDB$TRIGGERS to store if the procedure/trigger is valid or not after an ALTER DOMAIN.
|
||
|
|
3. The value of RDB$VALID_BLR is showed in ISQL commands SHOW PROCEDURE/TRIGGER.
|