diff options
Diffstat (limited to 'sql/opt_range.cc')
| -rw-r--r-- | sql/opt_range.cc | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sql/opt_range.cc b/sql/opt_range.cc index 27913f0aa8e..92a529c6f81 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -11785,6 +11785,26 @@ int QUICK_SELECT_DESC::get_next() if (!(last_range= rev_it++)) DBUG_RETURN(HA_ERR_END_OF_FILE); // All ranges used + key_range start_key; + start_key.key= (const uchar*) last_range->min_key; + start_key.length= last_range->min_length; + start_key.flag= ((last_range->flag & NEAR_MIN) ? HA_READ_AFTER_KEY : + (last_range->flag & EQ_RANGE) ? + HA_READ_KEY_EXACT : HA_READ_KEY_OR_NEXT); + start_key.keypart_map= last_range->min_keypart_map; + key_range end_key; + end_key.key= (const uchar*) last_range->max_key; + end_key.length= last_range->max_length; + end_key.flag= (last_range->flag & NEAR_MAX ? HA_READ_BEFORE_KEY : + HA_READ_AFTER_KEY); + end_key.keypart_map= last_range->max_keypart_map; + result= file->prepare_range_scan((last_range->flag & NO_MIN_RANGE) ? NULL : &start_key, + (last_range->flag & NO_MAX_RANGE) ? NULL : &end_key); + if (result) + { + DBUG_RETURN(result); + } + if (last_range->flag & NO_MAX_RANGE) // Read last record { int local_error; |