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Fix for bug#42014: Crash, name_const with collate

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Problem: some queries using NAME_CONST(.. COLLATE ...)
lead to server crash due to failed type cast.

Fix: return the underlying item's type in case of
NAME_CONST(.. COLLATE ...) to avoid wrong casting.


mysql-test/r/func_misc.result:
  Fix for bug#42014: Crash, name_const with coll
    - test result.
mysql-test/t/func_misc.test:
  Fix for bug#42014: Crash, name_const with coll
    - test case.
sql/item.cc:
  Fix for bug#42014: Crash, name_const with coll
    - in case of NAME_CONST('name', 'value' COLLATE collation)
  Item_name_const::type() returns type of 'value' argument 
  to awoid wrong type casting of the Item_name_const items.
This commit is contained in:
Ramil Kalimullin
2009-02-05 11:43:39 +04:00
parent 243b2639cc
commit 31d908d70b
3 changed files with 33 additions and 6 deletions
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5
mysql-test/r/func_misc.result
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@@ -319,4 +319,9 @@ select @my_uuid_date - @my_uuid_synthetic;
@my_uuid_date - @my_uuid_synthetic
0
set @@session.time_zone=@save_tz;
CREATE TABLE t1 (a DATE);
SELECT * FROM t1 WHERE a = NAME_CONST('reportDate',
_binary'2009-01-09' COLLATE 'binary');
a
DROP TABLE t1;
End of 5.0 tests