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Fixed LP bug #670380.

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Lifted the limitation that hash join could not be used over 
varchar fields with non-binary collation.
This commit is contained in:
Igor Babaev
2010-12-22 00:37:35 -08:00
parent 4f28dcbe32
commit a095346a9d
9 changed files with 469 additions and 28 deletions
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3
sql/mysql_priv.h
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@ -1879,6 +1879,9 @@ bool key_cmp_if_same(TABLE *form,const uchar *key,uint index,uint key_length);
void key_unpack(String *to,TABLE *form,uint index);
bool is_key_used(TABLE *table, uint idx, const MY_BITMAP *fields);
int key_cmp(KEY_PART_INFO *key_part, const uchar *key, uint key_length);
ulong key_hashnr(KEY *key_info, uint used_key_parts, const uchar *key);
bool key_buf_cmp(KEY *key_info, uint used_key_parts,
const uchar *key1, const uchar *key2);
extern "C" int key_rec_cmp(void *key_info, uchar *a, uchar *b);
bool init_errmessage(void);