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Fix for bug #54007: assert in ha_myisam::index_next, HANDLER

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Problem: the server missed the fact that one can read from 
2 indexes alternately using HANDLER interface.

Fix: check if the same (initialized) index is involved
reading next/prev values from the index.
This commit is contained in:
Ramil Kalimullin
2010-06-09 14:45:04 +04:00
parent 5932330839
commit 3058f4a136
3 changed files with 162 additions and 3 deletions
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93
mysql-test/r/handler_myisam.result
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@ -769,4 +769,97 @@ a
1
HANDLER t1 CLOSE;
DROP TABLE t1;
#
# Bug #54007: assert in ha_myisam::index_next , HANDLER
#
CREATE TABLE t1(a INT, b INT, PRIMARY KEY(a), KEY b(b), KEY ab(a, b));
HANDLER t1 OPEN;
HANDLER t1 READ FIRST;
a b
HANDLER t1 READ `PRIMARY` NEXT;
a b
HANDLER t1 READ ab NEXT;
a b
HANDLER t1 READ b NEXT;
a b
HANDLER t1 READ NEXT;
a b
HANDLER t1 CLOSE;
INSERT INTO t1 VALUES (2, 20), (1, 10), (4, 40), (3, 30);
HANDLER t1 OPEN;
HANDLER t1 READ FIRST;
a b
2 20
HANDLER t1 READ NEXT;
a b
1 10
HANDLER t1 READ `PRIMARY` NEXT;
a b
1 10
HANDLER t1 READ `PRIMARY` NEXT;
a b
2 20
HANDLER t1 READ ab NEXT;
a b
1 10
HANDLER t1 READ ab NEXT;
a b
2 20
HANDLER t1 READ b NEXT;
a b
1 10
HANDLER t1 READ b NEXT;
a b
2 20
HANDLER t1 READ b NEXT;
a b
3 30
HANDLER t1 READ b NEXT;
a b
4 40
HANDLER t1 READ b NEXT;
a b
HANDLER t1 READ NEXT;
a b
4 40
HANDLER t1 READ NEXT;
a b
3 30
HANDLER t1 READ NEXT;
a b
HANDLER t1 CLOSE;
HANDLER t1 OPEN;
HANDLER t1 READ FIRST;
a b
2 20
HANDLER t1 READ `PRIMARY` PREV;
a b
4 40
HANDLER t1 READ `PRIMARY` PREV;
a b
3 30
HANDLER t1 READ b PREV;
a b
4 40
HANDLER t1 READ b PREV;
a b
3 30
HANDLER t1 CLOSE;
HANDLER t1 OPEN;
HANDLER t1 READ FIRST;
a b
2 20
HANDLER t1 READ `PRIMARY` PREV LIMIT 3;
a b
4 40
3 30
2 20
HANDLER t1 READ b NEXT LIMIT 5;
a b
1 10
2 20
3 30
4 40
HANDLER t1 CLOSE;
DROP TABLE t1;
End of 5.1 tests