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| author | Ramil Kalimullin <ramil@mysql.com> | 2009-12-15 21:08:21 +0400 |
|---|---|---|
| committer | Ramil Kalimullin <ramil@mysql.com> | 2009-12-15 21:08:21 +0400 |
| commit | 4422b0f665fa3cba9f86b1c5e8e242f7839f6335 (patch) | |
| tree | bc9c340170fcfbc5a33213fdf3d5f53eecd3704e /sql/item_cmpfunc.cc | |
| parent | b4def7bea14b2102166365c44e359a26ae92d39b (diff) | |
| download | mariadb-git-4422b0f665fa3cba9f86b1c5e8e242f7839f6335.tar.gz | |
Fix for bug#49517: Inconsistent behavior while using
NULLable BIGINT and INT columns in comparison
Problem: a consequence of the fix for 43668.
Some Arg_comparator inner initialization missed,
that may lead to unpredictable (wrong) comparison
results.
Fix: always properly initialize Arg_comparator
before its usage.
Diffstat (limited to 'sql/item_cmpfunc.cc')
| -rw-r--r-- | sql/item_cmpfunc.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index 419b79377d7..e4f26978431 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -895,9 +895,9 @@ int Arg_comparator::set_cmp_func(Item_result_field *owner_arg, ulonglong const_value= (ulonglong)-1; thd= current_thd; owner= owner_arg; + set_null= set_null && owner_arg; a= a1; b= a2; - owner= owner_arg; thd= current_thd; if ((cmp_type= can_compare_as_dates(*a, *b, &const_value))) |