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Fix for BUG#5117:

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* Renamed handler::estimate_number_of_rows to handler::estimate_rows_upper_bound function, which can also return "unknown"
 * made filesort to use full sort buffer if number of rows to sort is not known.
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sergefp@mysql.com
2004-09-13 06:14:25 +04:00
parent 0afcaac5a8
commit 13fdbc99cf
7 changed files with 102 additions and 15 deletions
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sql/ha_berkeley.h
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@ -100,7 +100,7 @@ class ha_berkeley: public handler
ulong table_flags(void) const { return int_table_flags; }
uint max_supported_keys() const { return MAX_KEY-1; }
uint extra_rec_buf_length() { return BDB_HIDDEN_PRIMARY_KEY_LENGTH; }
ha_rows estimate_number_of_rows();
ha_rows estimate_rows_upper_bound();
const key_map *keys_to_use_for_scanning() { return &key_map_full; }
bool has_transactions() { return 1;}