--source include/have_sequence.inc
--source include/not_embedded.inc
--source include/have_innodb.inc
# Testcase for MDEV-33306 takes ~6 minutes with valgrind:
--source include/not_valgrind.inc

#
# Show the costs for rowid filter
#

create table t1 (
  pk int primary key auto_increment,
  nm varchar(32),
  fl1 tinyint default 0,
  fl2 tinyint default 0,
  index idx1(nm, fl1),
  index idx2(fl2)
) engine=myisam;

create table name (
  pk int primary key auto_increment,
  nm bigint
) engine=myisam;

create table flag2 (
  pk int primary key auto_increment,
  fl2 tinyint
) engine=myisam;

insert into name(nm) select seq from seq_1_to_1000 order by rand(17);
insert into flag2(fl2) select seq mod 2 from seq_1_to_1000 order by rand(19);

insert into t1(nm,fl2)
  select nm, fl2 from name, flag2 where name.pk = flag2.pk;

analyze table t1 persistent for all;

--disable_ps_protocol
set optimizer_trace="enabled=on";
set optimizer_switch='rowid_filter=on';
set statement optimizer_adjust_secondary_key_costs=0 for
explain select * from t1  where nm like '500%' AND fl2 = 0;
set @trace=(select trace from information_schema.optimizer_trace);
select json_detailed(json_extract(@trace, '$**.considered_access_paths'));

--echo
--echo The following trace should have a different rowid_filter_key cost
--echo
set statement optimizer_adjust_secondary_key_costs=2 for
explain select * from t1  where nm like '500%' AND fl2 = 0;
set @trace=(select trace from information_schema.optimizer_trace);
select json_detailed(json_extract(@trace, '$**.considered_access_paths'));

--enable_ps_protocol

drop table t1, name, flag2;

select @@optimizer_adjust_secondary_key_costs;
set @@optimizer_adjust_secondary_key_costs=7;
select @@optimizer_adjust_secondary_key_costs;
set @@optimizer_adjust_secondary_key_costs=default;

--echo #
--echo # MDEV-33306 Optimizer choosing incorrect index in 10.6, 10.5 but not in 10.4
--echo #

create table t1 (a int primary key, b int, c int, d int, key(b),key(c)) engine=innodb;
insert into t1 select seq, mod(seq,10), mod(seq,2), seq from seq_1_to_50000;
--replace_column 9 #
explain select b, sum(d) from t1 where c=0 group by b;
select b, sum(d) from t1 where c=0 group by b;
set @@optimizer_adjust_secondary_key_costs="disable_forced_index_in_group_by";
--replace_column 9 #
explain select b, sum(d) from t1 where c=0 group by b;
select b, sum(d) from t1 where c=0 group by b;
drop table t1;

--echo #
--echo # MDEV-34664: fix_innodb_cardinality
--echo #

set @save_userstat=@@global.userstat;
set @save_ispsp=@@global.innodb_stats_persistent_sample_pages;
set @@global.innodb_stats_persistent_sample_pages=20;
set @@global.userstat=on;
set use_stat_tables=PREFERABLY_FOR_QUERIES;

create or replace table t1 (a int primary key, b int, c int, d int, key(b,c,d)) engine=innodb;
insert into t1 select seq,seq/100,seq/60,seq/10 from seq_1_to_1000;
create or replace table t2 (a int);
insert into t2 values (1),(2),(3);
analyze table t1;
select count(distinct b),count(distinct b,c), count(distinct b,c,d) from t1;
show index from t1;
explain select * from t1,t2 where t1.b=t2.a;
set @@optimizer_adjust_secondary_key_costs=8;
explain select * from t1,t2 where t1.b=t2.a;
show index from t1;
# Flush tables or show index is needed to refresh the data in table share
flush tables;
explain select * from t1,t2 where t1.b=t2.a;
show index from t1;
# Check that the option does not affect other usage
connect (user2, localhost, root,,);
show index from t1;
connection default;
disconnect user2;
drop table t1,t2;
set global userstat=@save_userstat;
set global innodb_stats_persistent_sample_pages=@save_ispsp;

--echo #
--echo # MDEV-35958: Cost estimates for materialized derived tables are poor
--echo #
set optimizer_trace=1;
create table t1 (
  a int
);
insert into t1 select seq from seq_1_to_10000;

explain
select *
from
  t1 as t1_base,
  (select a from t1 limit 10000) as TBL;

set @trace=(select trace from information_schema.optimizer_trace);
--echo # BEFORE, without fix_derived_table_read_cost: derived2 has cost=rows=10000
select json_detailed(
  json_extract(json_extract(@trace, '$**.rows_estimation'), '$[1]')
  ) as Trace;

set optimizer_adjust_secondary_key_costs='fix_derived_table_read_cost';

explain
select *
from
  t1 as t1_base,
  (select a from t1 limit 10000) as TBL;

set @trace=(select trace from information_schema.optimizer_trace);
--echo # AFTER, with fix_derived_table_read_cost: derived2 has more realistic cost
select json_detailed(
  json_extract(json_extract(@trace, '$**.rows_estimation'), '$[1]')
  ) as Trace;

drop table t1;

set @@optimizer_adjust_secondary_key_costs=default;