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| author | Neeraj Bisht <neeraj.x.bisht@oracle.com> | 2013-04-30 22:46:37 +0530 |
|---|---|---|
| committer | Neeraj Bisht <neeraj.x.bisht@oracle.com> | 2013-04-30 22:46:37 +0530 |
| commit | 84421e8e6c64b3999609e99457ebfb1a3a803240 (patch) | |
| tree | ed73e56d1deb2eeb38643abc6d72422e7d6e0ef7 /sql/opt_range.cc | |
| parent | 3c50661f410c81fc214ab502ef23957fb3dd9525 (diff) | |
| parent | ed694b0c090c36737ae2b07dbdf835c8ce2bed0f (diff) | |
| download | mariadb-git-84421e8e6c64b3999609e99457ebfb1a3a803240.tar.gz | |
BUG#16222245 - CRASH WITH EXPLAIN FOR A QUERY WITH LOOSE SCAN FOR
GROUP BY, MYISAM
Merge fix for Bug#16222245 from mysql-5.1 to mysql-5.5
Diffstat (limited to 'sql/opt_range.cc')
| -rw-r--r-- | sql/opt_range.cc | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sql/opt_range.cc b/sql/opt_range.cc index b8f583a66ed..386faed3aa2 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -11109,9 +11109,11 @@ int QUICK_GROUP_MIN_MAX_SELECT::next_min() */ if (min_max_arg_part && min_max_arg_part->field->is_null()) { + uchar key_buf[MAX_KEY_LENGTH]; + /* Find the first subsequent record without NULL in the MIN/MAX field. */ - key_copy(tmp_record, record, index_info, 0); - result= file->index_read_map(record, tmp_record, + key_copy(key_buf, record, index_info, 0); + result= file->index_read_map(record, key_buf, make_keypart_map(real_key_parts), HA_READ_AFTER_KEY); /* @@ -11127,7 +11129,7 @@ int QUICK_GROUP_MIN_MAX_SELECT::next_min() if (!result) { if (key_cmp(index_info->key_part, group_prefix, real_prefix_len)) - key_restore(record, tmp_record, index_info, 0); + key_restore(record, key_buf, index_info, 0); } else if (result == HA_ERR_KEY_NOT_FOUND || result == HA_ERR_END_OF_FILE) result= 0; /* There is a result in any case. */ |