SET sql_mode=ORACLE;
#
# Testing exceptions in the top-level blocks
#
# No HANDLER declarations, no exceptions
CREATE FUNCTION f1 RETURN INT
AS
BEGIN
RETURN 10;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	freturn 3 10
SELECT f1();
f1()
10
DROP FUNCTION f1;
# No HANDLER declarations, no code, no exceptions
CREATE PROCEDURE p1 ()
IS
BEGIN
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	jump 2
CALL p1;
DROP PROCEDURE p1;
# No HANDLER declarations, no code, some exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
EXCEPTION
WHEN 1002 THEN v:=225;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	jump 1
1	hpush_jump 4 1 EXIT
2	set v@0 225
3	hreturn 0 4
4	hpop 1
set @v= 10;
CALL p1(@v);
SELECT @v;
@v
10
DROP PROCEDURE p1;
# No HANDLER declarations, some code, some exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=224;
EXCEPTION
WHEN 1002 THEN v:=225;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	jump 3
1	set v@0 224
2	jump 6
3	hpush_jump 1 1 EXIT
4	set v@0 225
5	hreturn 0 6
6	hpop 1
set @v= 10;
CALL p1(@v);
SELECT @v;
@v
224
DROP PROCEDURE p1;
# Some HANDLER declarations, no code, no exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
EXIT HANDLER FOR 1000
BEGIN
v:=123;
END;
BEGIN
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	hpush_jump 3 1 EXIT
1	set v@0 123
2	hreturn 0 3
3	hpop 1
set @v= 10;
CALL p1(@v);
SELECT @v;
@v
10
DROP PROCEDURE p1;
# Some HANDLER declarations, no code, some exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
EXIT HANDLER FOR 1000
BEGIN
v:=123;
END;
BEGIN
EXCEPTION
WHEN 1002 THEN v:=225;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	hpush_jump 3 1 EXIT
1	set v@0 123
2	hreturn 0 6
3	hpush_jump 6 1 EXIT
4	set v@0 225
5	hreturn 0 6
6	hpop 2
set @v= 10;
CALL p1(@v);
SELECT @v;
@v
10
DROP PROCEDURE p1;
# Some HANDLER declarations, some code, no exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
EXIT HANDLER FOR 1000
BEGIN
v:=123;
END;
BEGIN
v:=223;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	hpush_jump 3 1 EXIT
1	set v@0 123
2	hreturn 0 4
3	set v@0 223
4	hpop 1
set @v= 10;
CALL p1(@v);
SELECT @v;
@v
223
DROP PROCEDURE p1;
# Some HANDLER declarations, some code, some exceptions
CREATE PROCEDURE p1 (v IN OUT VARCHAR2(20))
IS
EXIT HANDLER FOR 1000
BEGIN
v:=123;
END;
CONTINUE HANDLER FOR 1001
BEGIN
SET v=223;
END;
BEGIN
v:= 1;
EXCEPTION
WHEN 1002 THEN SET v=225;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	hpush_jump 3 1 EXIT
1	set v@0 123
2	hreturn 0 12
3	hpush_jump 8 1 CONTINUE
4	set v@0 223
5	hreturn 1
6	set v@0 1
7	jump 12
8	hpush_jump 6 1 EXIT
9	set v@0 225
10	hreturn 0 12
11	jump 6
12	hpop 3
DROP PROCEDURE p1;
#
# Testing EXCEPTIONS in internal blocks
#
# No HANDLER declarations, no code, no exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
BEGIN
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	jump 5
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
123
DROP PROCEDURE p1;
# No HANDLER declarations, no code, some exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
BEGIN
EXCEPTION
WHEN 20002 THEN v:=335;
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	jump 2
2	hpush_jump 5 1 EXIT
3	set v@0 335
4	hreturn 0 5
5	hpop 1
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
123
DROP PROCEDURE p1;
# No HANDLER declarations, some code, no exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
BEGIN
v:=223;
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	set v@0 223
2	jump 6
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
223
DROP PROCEDURE p1;
# No HANDLER declarations, some code, some exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
BEGIN
v:=223;
EXCEPTION
WHEN 20002 THEN v:=335;
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	jump 4
2	set v@0 223
3	jump 7
4	hpush_jump 2 1 EXIT
5	set v@0 335
6	hreturn 0 7
7	hpop 1
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
223
DROP PROCEDURE p1;
# Some HANDLER declarations, no code, no exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
DECLARE
EXIT HANDLER FOR 1000
BEGIN
v:=323;
END;
BEGIN
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	hpush_jump 4 1 EXIT
2	set v@0 323
3	hreturn 0 4
4	hpop 1
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
123
DROP PROCEDURE p1;
# Some HANDLER declarations, no code, some exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
DECLARE
EXIT HANDLER FOR 1000
BEGIN
v:=323;
END;
BEGIN
EXCEPTION
WHEN 20002 THEN v:=335;
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	hpush_jump 4 1 EXIT
2	set v@0 323
3	hreturn 0 7
4	hpush_jump 7 1 EXIT
5	set v@0 335
6	hreturn 0 7
7	hpop 2
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
123
DROP PROCEDURE p1;
# Some HANDLER declarations, some code, no exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
DECLARE
EXIT HANDLER FOR 1000
BEGIN
v:=323;
END;
BEGIN
v:= 324;
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	hpush_jump 4 1 EXIT
2	set v@0 323
3	hreturn 0 5
4	set v@0 324
5	hpop 1
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
324
DROP PROCEDURE p1;
# Some HANDLER declarations, some code, some exceptions
CREATE PROCEDURE p1 (v IN OUT INT)
IS
BEGIN
v:=123;
DECLARE
EXIT HANDLER FOR 1000
BEGIN
v:=323;
END;
BEGIN
v:= 324;
EXCEPTION WHEN 2002 THEN v:= 325;
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set v@0 123
1	hpush_jump 6 1 EXIT
2	set v@0 323
3	hreturn 0 9
4	set v@0 324
5	jump 9
6	hpush_jump 4 1 EXIT
7	set v@0 325
8	hreturn 0 9
9	hpop 2
SET @v=10;
CALL p1(@v);
SELECT @v;
@v
324
DROP PROCEDURE p1;
#
# Testing EXIT statement
#
CREATE FUNCTION f1 RETURN INT
IS
i INT := 0;
BEGIN
LOOP
i:= i + 1;
IF i >= 5 THEN
EXIT;
END IF;
END LOOP;
RETURN i;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set i@0 0
1	set i@0 i@0 + 1
2	jump_if_not 1(1) i@0 >= 5
3	jump 4
4	freturn 3 i@0
SELECT f1() FROM DUAL;
f1()
5
DROP FUNCTION f1;
CREATE FUNCTION f1 RETURN INT
IS
i INT := 0;
BEGIN
LOOP
i:= i + 1;
EXIT WHEN i >=5;
END LOOP;
RETURN i;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set i@0 0
1	set i@0 i@0 + 1
2	jump_if_not 1(0) i@0 >= 5
3	jump 4
4	freturn 3 i@0
SELECT f1() FROM DUAL;
f1()
5
DROP FUNCTION f1;
CREATE FUNCTION f1 RETURN INT
IS
i INT := 0;
BEGIN
LOOP
BEGIN
i:= i + 1;
IF i >= 5 THEN
EXIT;
END IF;
EXCEPTION
WHEN OTHERS THEN i:= 1000;
END;
END LOOP;
RETURN i;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set i@0 0
1	jump 5
2	set i@0 i@0 + 1
3	jump_if_not 8(8) i@0 >= 5
4	jump 10
5	hpush_jump 2 1 EXIT
6	set i@0 1000
7	hreturn 0 8
8	hpop 1
9	jump 5
10	freturn 3 i@0
SELECT f1() FROM DUAL;
f1()
5
DROP FUNCTION f1;
CREATE PROCEDURE p1(a IN OUT INT)
IS
i INT := 0;
BEGIN
LOOP
LOOP
BEGIN
i:= i + 1;
IF i >=5 THEN
EXIT;
END IF;
EXCEPTION
WHEN OTHERS THEN a:=1000;
END;
END LOOP;
i:= i + 100;
EXIT;
END LOOP;
a:= i;
EXCEPTION
WHEN OTHERS THEN a:=11;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	set i@1 0
1	jump 14
2	set i@1 i@1 + 1
3	jump_if_not 8(8) i@1 >= 5
4	jump 10
5	hpush_jump 2 2 EXIT
6	set a@0 1000
7	hreturn 0 8
8	hpop 1
9	jump 5
10	set i@1 i@1 + 100
11	jump 12
12	set a@0 i@1
13	jump 17
14	hpush_jump 5 2 EXIT
15	set a@0 11
16	hreturn 0 17
17	hpop 1
set @v= 10;
CALL p1(@v);
SELECT @v;
@v
105
DROP PROCEDURE p1;
# Testing RETURN in procedures
CREATE PROCEDURE p1 (a IN OUT INT)
AS
BEGIN
IF a < 10 THEN
BEGIN
a:= a + 1;
RETURN;
END;
END IF;
a:= 200;
EXCEPTION
WHEN OTHERS THEN
BEGIN
a:= 100;
RETURN;
END;
END;
/
SHOW PROCEDURE CODE p1;
Pos	Instruction
0	jump 6
1	jump_if_not 4(4) a@0 < 10
2	set a@0 a@0 + 1
3	preturn
4	set a@0 200
5	jump 9
6	hpush_jump 1 1 EXIT
7	set a@0 100
8	preturn
9	hpop 1
DROP PROCEDURE p1;
# Testing FOR loop statement
CREATE FUNCTION f1 (a INT, b INT) RETURN INT
AS
total INT := 0;
BEGIN
FOR i IN 1 .. a
LOOP
total:= total + i;
IF i = b THEN
EXIT;
END IF;
END LOOP;
RETURN total;
END
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set total@2 0
1	set i@3 1
2	set [upper_bound]@4 a@0
3	jump_if_not 9(9) i@3 <= [upper_bound]@4
4	set total@2 total@2 + i@3
5	jump_if_not 7(7) i@3 = b@1
6	jump 9
7	set i@3 i@3 + 1
8	jump 3
9	freturn 3 total@2
SELECT f1(3, 100) FROM DUAL;
f1(3, 100)
6
SELECT f1(3, 2) FROM DUAL;
f1(3, 2)
3
DROP FUNCTION f1;
CREATE FUNCTION f1 (a INT, b INT) RETURN INT
AS
total INT := 0;
BEGIN
FOR i IN REVERSE a..1
LOOP
total:= total + i;
IF i = b THEN
EXIT;
END IF;
END LOOP;
RETURN total;
END
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set total@2 0
1	set i@3 a@0
2	set [upper_bound]@4 1
3	jump_if_not 9(9) i@3 >= [upper_bound]@4
4	set total@2 total@2 + i@3
5	jump_if_not 7(7) i@3 = b@1
6	jump 9
7	set i@3 i@3 + -1
8	jump 3
9	freturn 3 total@2
SELECT f1(3, 100) FROM DUAL;
f1(3, 100)
6
SELECT f1(3, 2) FROM DUAL;
f1(3, 2)
5
DROP FUNCTION f1;
# Testing labeled FOR LOOP statement
CREATE FUNCTION f1 (a INT, limita INT, b INT, limitb INT) RETURN INT
AS
total INT := 0;
BEGIN
<<la>>
FOR ia IN 1 .. a
LOOP
total:= total + 1000;
<<lb>>
FOR ib IN 1 .. b
LOOP
total:= total + 1;
EXIT lb WHEN ib = limitb;
EXIT la WHEN ia = limita;
END LOOP lb;
END LOOP la;
RETURN total;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set total@4 0
1	set ia@5 1
2	set [upper_bound]@6 a@0
3	jump_if_not 17(17) ia@5 <= [upper_bound]@6
4	set total@4 total@4 + 1000
5	set ib@7 1
6	set [upper_bound]@8 b@2
7	jump_if_not 15(15) ib@7 <= [upper_bound]@8
8	set total@4 total@4 + 1
9	jump_if_not 11(0) ib@7 = limitb@3
10	jump 15
11	jump_if_not 13(0) ia@5 = limita@1
12	jump 17
13	set ib@7 ib@7 + 1
14	jump 7
15	set ia@5 ia@5 + 1
16	jump 3
17	freturn 3 total@4
SELECT f1(2, 1, 2, 2) FROM DUAL;
f1(2, 1, 2, 2)
1001
SELECT f1(2, 2, 2, 2) FROM DUAL;
f1(2, 2, 2, 2)
2003
SELECT f1(2, 3, 2, 3) FROM DUAL;
f1(2, 3, 2, 3)
2004
DROP FUNCTION f1;
# Testing labeled ITERATE in a labeled FOR LOOP
CREATE FUNCTION f1(a INT) RETURN INT
AS
total INT:= 0;
BEGIN
<<li>>
FOR i IN 1 .. a
LOOP
total:= total + 1000;
IF i = 5 THEN
ITERATE li;
END IF;
total:= total + 1;
END LOOP;
RETURN total;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set total@1 0
1	set i@2 1
2	set [upper_bound]@3 a@0
3	jump_if_not 11(11) i@2 <= [upper_bound]@3
4	set total@1 total@1 + 1000
5	jump_if_not 8(8) i@2 = 5
6	set i@2 i@2 + 1
7	jump 3
8	set total@1 total@1 + 1
9	set i@2 i@2 + 1
10	jump 3
11	freturn 3 total@1
SELECT f1(3), f1(4), f1(5), f1(6) FROM DUAL;
f1(3)	f1(4)	f1(5)	f1(6)
3003	4004	5004	6005
DROP FUNCTION f1;
CREATE FUNCTION f1(a INT) RETURN INT
AS
total INT:= 0;
BEGIN
<<li>>
FOR i IN 1 .. a
LOOP
FOR j IN 1 .. 2
LOOP
total:= total + 1000;
IF i = 5 THEN
ITERATE li;
END IF;
total:= total + 1;
END LOOP;
END LOOP;
RETURN total;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set total@1 0
1	set i@2 1
2	set [upper_bound]@3 a@0
3	jump_if_not 16(16) i@2 <= [upper_bound]@3
4	set j@4 1
5	set [upper_bound]@5 2
6	jump_if_not 14(14) j@4 <= [upper_bound]@5
7	set total@1 total@1 + 1000
8	jump_if_not 11(11) i@2 = 5
9	set i@2 i@2 + 1
10	jump 3
11	set total@1 total@1 + 1
12	set j@4 j@4 + 1
13	jump 6
14	set i@2 i@2 + 1
15	jump 3
16	freturn 3 total@1
SELECT f1(3), f1(4), f1(5), f1(6) FROM DUAL;
f1(3)	f1(4)	f1(5)	f1(6)
6006	8008	9008	11010
DROP FUNCTION f1;
CREATE FUNCTION f1(a INT) RETURN INT
AS
total INT:= 0;
BEGIN
<<lj>>
FOR j IN 1 .. 2
LOOP
<<li>>
FOR i IN 1 .. a
LOOP
total:= total + 1000;
IF i = 5 THEN
ITERATE li;
END IF;
total:= total + 1;
END LOOP;
END LOOP;
RETURN total;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set total@1 0
1	set j@2 1
2	set [upper_bound]@3 2
3	jump_if_not 16(16) j@2 <= [upper_bound]@3
4	set i@4 1
5	set [upper_bound]@5 a@0
6	jump_if_not 14(14) i@4 <= [upper_bound]@5
7	set total@1 total@1 + 1000
8	jump_if_not 11(11) i@4 = 5
9	set i@4 i@4 + 1
10	jump 6
11	set total@1 total@1 + 1
12	set i@4 i@4 + 1
13	jump 6
14	set j@2 j@2 + 1
15	jump 3
16	freturn 3 total@1
SELECT f1(3), f1(4), f1(5), f1(6) FROM DUAL;
f1(3)	f1(4)	f1(5)	f1(6)
6006	8008	10008	12010
DROP FUNCTION f1;
# Testing CONTINUE statement
CREATE FUNCTION f1(a INT) RETURN INT
AS
total INT:= 0;
BEGIN
FOR i IN 1 .. a
LOOP
CONTINUE WHEN i=5;
total:= total + 1;
END LOOP;
RETURN total;
END;
/
SHOW FUNCTION CODE f1;
Pos	Instruction
0	set total@1 0
1	set i@2 1
2	set [upper_bound]@3 a@0
3	jump_if_not 10(10) i@2 <= [upper_bound]@3
4	jump_if_not 7(0) i@2 = 5
5	set i@2 i@2 + 1
6	jump 3
7	set total@1 total@1 + 1
8	set i@2 i@2 + 1
9	jump 3
10	freturn 3 total@1
SELECT f1(3), f1(4), f1(5), f1(6) FROM DUAL;
f1(3)	f1(4)	f1(5)	f1(6)
3	4	4	5
DROP FUNCTION f1;