id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE table1 NULL index PRIMARY store_entable1 62 NULL 6 100.00 Using where; Using index
1 SIMPLE <subquery2> NULL eq_ref <auto_key> <auto_key> 8 db1.table1.id_ 1 100.00 NULL
2 MATERIALIZED table2 NULL index store_id_table2 store_id_table2 8 NULL 6 100.00 Using index