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select.result, select.test:

Added a test case for bug #7520.
table.cc:
  Fixed bug #7520.
  The bug was caused by a wrong calculation of the field max_key_length for
  a TABLE structure when there was an index on a blob field.


sql/table.cc:
  Fixed bug #7520.
  The bug was caused by a wrong calculation of the field max_key_length for
  a TABLE structure when there was an index on a blob field.
mysql-test/t/select.test:
  Added a test case for bug #7520.
mysql-test/r/select.result:
  Added a test case for bug #7520.
This commit is contained in:
unknown
2005-02-10 22:15:38 -08:00
parent 82de648bc4
commit 9540945624
3 changed files with 29 additions and 0 deletions

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@ -2364,3 +2364,16 @@ EXPLAIN SELECT i FROM t1 WHERE i=1;
table type possible_keys key key_len ref rows Extra
t1 const PRIMARY PRIMARY 4 const 1 Using index
DROP TABLE t1;
CREATE TABLE t1 ( a BLOB, INDEX (a(20)) );
CREATE TABLE t2 ( a BLOB, INDEX (a(20)) );
INSERT INTO t1 VALUES ('one'),('two'),('three'),('four'),('five');
INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five');
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 5
t2 ref a a 23 t1.a 5
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 5
t2 ref a a 23 t1.a 5
DROP TABLE t1, t2;