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MDEV-10411 Providing compatibility for basic PL/SQL constructs

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Part 5: EXIT statement

Adding unconditional EXIT statement:

  EXIT [ label ]

Conditional EXIT statements with WHERE clause
will be added in a separate patch.
This commit is contained in:
Alexander Barkov
2016-08-17 10:33:31 +04:00
parent 765d9d6429
commit 8feb984211
9 changed files with 469 additions and 8 deletions
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110
mysql-test/suite/compat/oracle/r/sp-code.result
View File

@ -396,3 +396,113 @@ 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
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;