RETURN¶
Syntax¶
Figure 1 shows the syntax diagram for a return statement.
Figure 1 return_clause::=¶
The syntax details are as follows:
This statement returns control from a stored procedure or function to a caller.
Example¶
-- Create the stored procedure proc_staffs:
CREATE OR REPLACE PROCEDURE proc_staffs
(
section NUMBER(6),
salary_sum out NUMBER(8,2),
staffs_count out INTEGER
)
IS
BEGIN
SELECT sum(salary), count(*) INTO salary_sum, staffs_count FROM staffs where section_id = section;
END;
/
-- Create the stored procedure proc_return:
CREATE OR REPLACE PROCEDURE proc_return
AS
v_num NUMBER(8,2);
v_sum INTEGER;
BEGIN
proc_staffs(30, v_sum, v_num); --Invoke a statement
dbms_output.put_line(v_sum||'#'||v_num);
RETURN; --Return a statement
END;
/
-- Invoke a stored procedure proc_return:
CALL proc_return();
-- Delete a stored procedure:
DROP PROCEDURE proc_staffs;
DROP PROCEDURE proc_return;
--Create the function func_return.
CREATE OR REPLACE FUNCTION func_return returns void
language plpgsql
AS $$
DECLARE
v_num INTEGER := 1;
BEGIN
dbms_output.put_line(v_num);
RETURN; --Return a statement
END $$;
-- Invoke the function func_return.
CALL func_return();
1
-- Delete the function:
DROP FUNCTION func_return;