diff options
Diffstat (limited to 'sql/opt_subselect.cc')
| -rw-r--r-- | sql/opt_subselect.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sql/opt_subselect.cc b/sql/opt_subselect.cc index 3aa5a188a26..d06480391be 100644 --- a/sql/opt_subselect.cc +++ b/sql/opt_subselect.cc @@ -2738,10 +2738,12 @@ bool Duplicate_weedout_picker::check_qep(JOIN *join, } table_map dups_removed_fanout= 0; + double current_fanout= prefix_rec_count; for (uint j= first_dupsweedout_table; j <= idx; j++) { POSITION *p= join->positions + j; - dups_cost += p->read_time; + current_fanout *= p->records_read; + dups_cost += p->read_time + current_fanout / TIME_FOR_COMPARE; if (p->table->emb_sj_nest) { sj_inner_fanout *= p->records_read; |