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Bug#4521: unique key prefix interacts poorly with utf8.

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Fix for binary collations for MyISAM and HEAP BTREE.
This patch also changes trailing spaces behaviour for
binary collations. Binary collations now have PAD 
characteristic too.
This commit is contained in:
bar@mysql.com
2004-08-19 15:15:10 +05:00
parent 6b90806a4a
commit 2496e85b84
11 changed files with 384 additions and 41 deletions
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4
sql/item_cmpfunc.cc
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@@ -303,10 +303,10 @@ int Arg_comparator::set_compare_func(Item_bool_func2 *item, Item_result type)
my_coll_agg_error((*a)->collation, (*b)->collation, owner->func_name());
return 1;
}
if (my_binary_compare(cmp_collation.collation))
if (cmp_collation.collation == &my_charset_bin)
{
/*
We are using binary collation, change to compare byte by byte,
We are using BLOB/BINARY/VARBINARY, change to compare byte by byte,
without removing end space
*/
if (func == &Arg_comparator::compare_string)