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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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6
sql/ha_berkeley.cc
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@ -357,9 +357,11 @@ ulong ha_berkeley::index_flags(uint idx, uint part, bool all_parts) const
case HA_KEYTYPE_VARTEXT:
/*
As BDB stores only one copy of equal strings, we can't use key read
on these
on these. Binary collations do support key read though.
*/
flags&= ~HA_KEYREAD_ONLY;
if (!(table->key_info[idx].key_part[i].field->charset()->state
& MY_CS_BINSORT))
flags&= ~HA_KEYREAD_ONLY;
break;
default: // Keep compiler happy
break;