diff options
Diffstat (limited to 'sql/opt_range.cc')
| -rw-r--r-- | sql/opt_range.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sql/opt_range.cc b/sql/opt_range.cc index 4a7bbd9770b..0528dfcadc6 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -7386,6 +7386,9 @@ static TRP_RANGE *get_key_scans_params(PARAM *param, SEL_TREE *tree, found_records= check_quick_select(param, idx, read_index_only, key, update_tbl_stats, &mrr_flags, &buf_size, &cost, &is_ror_scan); + if (!is_ror_scan && + !optimizer_flag(param->thd, OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION)) + continue; if (found_records != HA_POS_ERROR && tree->index_scans && (index_scan= (INDEX_SCAN_INFO *)alloc_root(param->mem_root, |