�PNG �JFIF��

🗂️ simple

Path: big/SRC/mariadb-11.7.2/mysql-test/main/

✏️ Editing: win_big-mdev-11697.test

--source include/no_valgrind_without_big.inc

set max_recursive_iterations=200000;
create table test_table (id int, random_data varchar(36), static_int int, static_varchar varchar(10));

insert into test_table(id, random_data, static_int, static_varchar)
select id, random_data, 42, 'Hello'
    from (
        with recursive data_generator(id, random_data) as (
                select 1 as id, uuid() as random_data
                union all
                select id + 1, uuid() from data_generator where id < 1000
            )
        select * from data_generator
    ) as a;

commit;

analyze table test_table;

explain select * from (select id, lead(id) over(order by id) next_id from test_table order by id) a limit 10;

select * from (select id, lead(id) over(order by id) next_id from test_table order by id) a limit 10;

drop table if exists test_table;

create table test_table (id int, random_data varchar(36), static_int int, static_varchar varchar(10));

insert into test_table(id, random_data, static_int, static_varchar)
select id, random_data, 42, 'Hello'
    from (
        with recursive data_generator(id, random_data) as (
                select 1 as id, uuid() as random_data
                union all
                select id + 1, uuid() from data_generator where id < 100000
            )
        select * from data_generator
    ) as a;

commit;

analyze table test_table;

explain select * from (select id, lead(id) over(order by id) next_id from test_table order by id) a limit 10;

flush status;
select * from (select id, lead(id) over(order by id) next_id from test_table order by id) a limit 10;
select variable_name,
       case when variable_value > 0 then 'WITH PASSES' else 'NO PASSES' end as exp
from information_schema.session_status
where variable_name like 'Sort_merge_passes';

drop table test_table;
set max_recursive_iterations=default;

🔙 Back