Firebird 2.1 Language Reference Update

DDL statements
Description: Firebird 2.1 and up allow COLLATE clauses in declarations of input/output parameters and local
variables.
Example:
create procedure SpanishToDutch
(es_1 varchar(20) character set iso8859_1 collate es_es,
es_2 my_char_domain collate es_es)
returns
(nl_1 varchar(20) character set iso8859_1 collate du_nl,
nl_2 my_char_domain collate du_nl)
as
declare s_temp varchar(100) character set utf8 collate unicode;
begin
...
...
end
NOT NULL in variable and parameter declarations
Changed in: 2.1
Description: Firebird 2.1 and up allow NOT NULL constraints in declarations of input/output parameters and
local variables.
Example:
create procedure RegisterOrder(order_no int not null, description varchar(200) not null)
returns
(ticket_no int not null)
as
declare temp int not null;
begin
...
...
end
Default argument values
Changed in: 2.0
Description: It is now possible to provide default values for stored procedure arguments, allowing the caller to
omit one or more items (possibly even all) from the end of the argument list.
Syntax:
CREATE PROCEDURE procname ( [, ...])
...
::= paramname datatype [{= | DEFAULT} value]
Important: If you provide a default value for a parameter, you must do the same for any and all
parameters following it.
31