Firebird 2.1 Language Reference Update

Example:
DML statements
execute block (a my_domain = ?, b type of my_other_domain = ?)
returns (p my_third_domain)
as
declare s_temp type of my_third_domain;
begin
...
...
end
Available in: DSQL, ESQL, PSQL
Changed in: 1.5
EXECUTE PROCEDURE
Description: Executes a stored procedure. In Firebird 1.0.x as well as in InterBase, any input parameters for the
SP must be supplied as literals, host language variables (in ESQL) or local variables (in PSQL). In Firebird 1.5
and above, input parameters may also be (compound) expressions, except in static ESQL.
Syntax:
EXECUTE PROCEDURE procname
[TRANSACTION transaction]
[ [, ...]]
[RETURNING_VALUES [, ...]]
::= []
::= []
::= an expression evaluating to the declared parameter type
::= a host language or PSQL variable to receive the return value
::= [INDICATOR]:host_lang_intvar
Examples:
Notes
• TRANSACTION clauses are not supported in PSQL.
• Expression parameters are not supported in static ESQL, and not in Firebird versions below 1.5.
• NULL indicators are only valid in ESQL code. They must be host language variables of type
integer.
• In ESQL, variable names used as parameters or outvars must be preceded by a colon (“:”). In
PSQL the colon is generally optional, but forbidden for the trigger context variables OLD and
NEW.
In PSQL (with optional colons):
execute procedure MakeFullName
:FirstName, :MiddleName, :LastName
returning_values :FullName;
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