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Bug#27415 Text Variables in stored procedures

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- Problem was reported as a SP variable using itself as 
   right value inside SUBSTR caused corruption of data. 
 - This bug could not be verified in either 5.0bk or 5.1bk
 - Added test case to prevent future regressions.
This commit is contained in:
thek@adventure.(none) 2007-05-16 14:25:38 +02:00
parent 35616ba5c7
commit ed43ceb178
2 changed files with 85 additions and 0 deletions
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41
mysql-test/r/sp-vars.result
View file

@ -1161,3 +1161,44 @@ CALL p1();
v_text
abc|def
DROP PROCEDURE p1;
DROP PROCEDURE IF EXISTS bug27415_text_test|
DROP PROCEDURE IF EXISTS bug27415_text_test2|
CREATE PROCEDURE bug27415_text_test(entity_id_str_in text)
BEGIN
DECLARE str_remainder text;
SET str_remainder = entity_id_str_in;
select 'before substr', str_remainder;
SET str_remainder = SUBSTRING(str_remainder, 3);
select 'after substr', str_remainder;
END|
CREATE PROCEDURE bug27415_text_test2(entity_id_str_in text)
BEGIN
DECLARE str_remainder text;
DECLARE str_remainder2 text;
SET str_remainder2 = entity_id_str_in;
select 'before substr', str_remainder2;
SET str_remainder = SUBSTRING(str_remainder2, 3);
select 'after substr', str_remainder;
END|
CALL bug27415_text_test('a,b,c')|
before substr str_remainder
before substr a,b,c
after substr str_remainder
after substr b,c
CALL bug27415_text_test('a,b,c')|
before substr str_remainder
before substr a,b,c
after substr str_remainder
after substr b,c
CALL bug27415_text_test2('a,b,c')|
before substr str_remainder2
before substr a,b,c
after substr str_remainder
after substr b,c
CALL bug27415_text_test('a,b,c')|
before substr str_remainder
before substr a,b,c
after substr str_remainder
after substr b,c
DROP PROCEDURE bug27415_text_test|
DROP PROCEDURE bug27415_text_test2|

44
mysql-test/t/sp-vars.test
View file

@ -1367,4 +1367,48 @@ CALL p1();
DROP PROCEDURE p1;
#
# Bug #27415 Text Variables in stored procedures
# If the SP varible was also referenced on the right side
# the result was corrupted.
#
DELIMITER |;
--disable_warnings
DROP PROCEDURE IF EXISTS bug27415_text_test|
DROP PROCEDURE IF EXISTS bug27415_text_test2|
--enable_warnings
CREATE PROCEDURE bug27415_text_test(entity_id_str_in text)
BEGIN
DECLARE str_remainder text;
SET str_remainder = entity_id_str_in;
select 'before substr', str_remainder;
SET str_remainder = SUBSTRING(str_remainder, 3);
select 'after substr', str_remainder;
END|
CREATE PROCEDURE bug27415_text_test2(entity_id_str_in text)
BEGIN
DECLARE str_remainder text;
DECLARE str_remainder2 text;
SET str_remainder2 = entity_id_str_in;
select 'before substr', str_remainder2;
SET str_remainder = SUBSTRING(str_remainder2, 3);
select 'after substr', str_remainder;
END|
CALL bug27415_text_test('a,b,c')|
CALL bug27415_text_test('a,b,c')|
CALL bug27415_text_test2('a,b,c')|
CALL bug27415_text_test('a,b,c')|
DROP PROCEDURE bug27415_text_test|
DROP PROCEDURE bug27415_text_test2|
DELIMITER ;|
# End of 5.0 tests.