322     if (quick_uses_applicable_index && idx == join->const_tables &&   in check_range_access()
370   for (pos=join->best_ref+join->const_tables,end=join->best_ref+idx ;  in cache_record_length()
435     idx == join->const_tables ||                                     // 1  in best_access_path()
459       (idx == join->const_tables) ?  in best_access_path()
1076       idx == join->const_tables &&  in best_access_path()
1110   if (join->const_tables == join->tables)  in choose_table_order()
1113 	   sizeof(POSITION) * join->const_tables);  in choose_table_order()
1129     merge_sort(join->best_ref + join->const_tables,  in choose_table_order()
1145       merge_sort(join->best_ref + join->const_tables,  in choose_table_order()
1149       merge_sort(join->best_ref + join->const_tables,  in choose_table_order()
1258   uint idx= join->const_tables;  in optimize_straight_join()
1303       join->sort_by_table != join->positions[join->const_tables].table->table)  in optimize_straight_join()
1475   uint      idx= join->const_tables; // index into 'join->best_ref'  in greedy_search()
1597   for (uint i= join->const_tables; i < n_tables + join->const_tables ; i++)  in get_partial_join_cost()
1637       join->positions[join->const_tables].table->table)  in consider_plan()
1916             (idx == join->const_tables &&  // 's' is the first table in the QEP  in best_extension_by_limited_search()
2460        tableno != join->const_tables - 1;  in fix_semijoin_strategies()
2785   if (first_tab == join->const_tables)  in semijoin_firstmatch_loosescan_access_paths()
2923   if (first_inner == join->const_tables)  in semijoin_mat_scan_access_paths()
2997   if (first_inner == join->const_tables)  in semijoin_mat_lookup_access_paths()
3056   if (first_tab == join->const_tables)  in semijoin_dupsweedout_access_paths()
3234   if (idx == join->const_tables)  in advance_sj_state()