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create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1(a int);
insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
create table t2 (
a int,
b int,
key (a)
);
insert into t2 select A.a*1000 + B.a, A.a*1000 + B.a from t0 A, t1 B;
--echo #
--echo # Try an UPDATE that uses filesort:
--echo #
explain
update t2 set b=b+1 order by b limit 5;
explain format=json
update t2 set b=b+1 order by b limit 5;
--replace_regex /"r_total_time_ms": [0-9]*[.]?[0-9]*/"r_total_time_ms": "REPLACED"/
analyze format=json
update t2 set b=b+1 order by b limit 5;
--echo #
--echo # Try an UPDATE that uses buffering:
--echo #
explain
update t2 set a=a+1 where a<10;
explain format=json
update t2 set a=a+1 where a<10;
--replace_regex /"r_total_time_ms": [0-9]*[.]?[0-9]*/"r_total_time_ms": "REPLACED"/
analyze format=json
update t2 set a=a+1 where a<10;
--echo #
--echo # Try a DELETE that uses filesort:
--echo #
explain
delete from t2 order by b limit 5;
explain format=json
delete from t2 order by b limit 5;
--replace_regex /"r_total_time_ms": [0-9]*[.]?[0-9]*/"r_total_time_ms": "REPLACED"/ /"r_buffer_size": "[^"]+"/"r_buffer_size": "REPLACED"/
analyze format=json
delete from t2 order by b limit 5;
--echo #
--echo # Try a SELECT with QEP in form: filesort { tmp_table { join } }
--echo #
explain
select * from t0,t2 where t2.a=t0.a order by t2.b limit 4;
explain format=json
select * from t0,t2 where t2.a=t0.a order by t2.b limit 4;
--replace_regex /"r_total_time_ms": [0-9]*[.]?[0-9]*/"r_total_time_ms": "REPLACED"/
analyze format=json
select * from t0,t2 where t2.a=t0.a order by t2.b limit 4;
--echo #
--echo # Try a SELECT with QEP in form: join { filesort { table0 }, table2 }
--echo #
explain
select * from t0,t2 where t2.a=t0.a order by t0.a limit 4;
explain format=json
select * from t0,t2 where t2.a=t0.a order by t0.a limit 4;
--replace_regex /"r_total_time_ms": [0-9]*[.]?[0-9]*/"r_total_time_ms": "REPLACED"/ /"r_buffer_size": "[^"]+"/"r_buffer_size": "REPLACED"/
analyze format=json
select * from t0,t2 where t2.a=t0.a order by t0.a limit 4;
drop table t2;
drop table t0, t1;
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