--disable_query_log
set @@session.explicit_defaults_for_timestamp=off;
--enable_query_log
# owner: peihan.dph
# owner group: SQL1
# tags: optimizer
# description:
#
--disable_warnings
drop table if exists tbl1,tbl2,tbl3,tbl4;
--enable_warnings
create table tbl1 (i1 int, v2 varchar(80), i3 char(20),i4 float, d4 datetime(6),i5 decimal(5,3), primary key(i1));
create table tbl2 (i1 int, v2 varchar(80), i3 char(20),i4 float, d4 datetime(6), i5 decimal(5,3), primary key(i1));
create table tbl3 (i1 int, v2 varchar(80), i3 char(20),i4 float, d4 datetime(6), i5 decimal(5,3), primary key(i1));
create table tbl4 (i1 int, v2 varchar(80), i3 char(20),i4 float, d4 datetime(6), i5 decimal(5,3), primary key(i1));
insert into tbl1 values(1,'now','haha',1.6256,'2014-05-04 12:00:00',-10.235);
insert into tbl1 values(2,'now','haha',-1.6256,'2014-05-04 12:00:00',1.243);
insert into tbl1 values(3,'now','haha',1.656,'2014-05-04 12:00:00',-1.45);
insert into tbl2 values(1,'now','haha',1.6256,'2014-05-04 12:00:00',3.45);
insert into tbl2 values(2,'now1','haha',1.6256,'2014-05-04 12:00:00',-0.25);
insert into tbl2 values(3,'now2','haha',1.6256,'2014-05-04 12:00:00',0.253);
insert into tbl2 values(4,'now3','haha',1.6256,'2014-05-04 12:00:00',1.677);
insert into tbl3 values(1,'now','haha',1.6256,'2014-05-04 12:00:00',-10.235);
insert into tbl3 values(2,'now','haha',-1.6256,'2014-05-04 12:00:00',1.243);
insert into tbl3 values(3,'now','haha',1.656,'2014-05-04 12:00:00',-1.45);
insert into tbl4 values(1,'now','haha',1.6256,'2014-05-04 12:00:00',3.45);
insert into tbl4 values(2,'now1','haha',1.6256,'2014-05-04 12:00:00',-0.25);
insert into tbl4 values(3,'now2','haha',1.6256,'2014-05-04 12:00:00',0.253);
insert into tbl4 values(4,'now3','haha',1.6256,'2014-05-04 12:00:00',1.677);
select * from tbl1 join tbl2 on  tbl1.i1=tbl2.i1 join tbl3  on tbl1.i1=tbl3.i1 join tbl4 on tbl1.i1=tbl4.i1; 
select * from tbl1 a join tbl2 b on  a.i1=b.i1 join tbl3 c on a.i1=c.i1 join tbl4 d on a.i1=d.i1; 
select * from tbl1 join tbl2 on  tbl1.i1=tbl2.i1 join tbl3  on tbl1.i1=tbl3.i1 join tbl4 on tbl1.i1=tbl4.i1 where tbl1.i1=1;
select * from tbl1 join tbl2 on  tbl1.i1=tbl2.i1 join tbl3  on tbl2.i1=tbl3.i1 join tbl4 on tbl3.i1=tbl4.i1;
select * from tbl1 a join tbl2 b on a.i1=b.i1 join tbl3 c on b.i1=c.i1 join tbl4 d on c.i1=d.i1;
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select * from tbl1 join tbl2 on  tbl1.i1=tbl2.i1 join tbl3  on tbl1.i1=tbl3.i1 join tbl4 on tbl1.i1=tbl4.i1; 
--enable_result_log
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select * from tbl1 a join tbl2 b on  a.i1=b.i1 join tbl3 c on a.i1=c.i1 join tbl4 d on a.i1=d.i1; 
--enable_result_log
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select * from tbl1 join tbl2 on  tbl1.i1=tbl2.i1 join tbl3  on tbl2.i1=tbl3.i1 join tbl4 on tbl3.i1=tbl4.i1;
--enable_result_log
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select * from tbl1 a join tbl2 b on a.i1=b.i1 join tbl3 c on b.i1=c.i1 join tbl4 d on c.i1=d.i1;
--enable_result_log
select * from tbl1  left join tbl2 on  tbl1.i1=tbl2.i1  left join tbl3  on tbl1.i1=tbl3.i1  left join tbl4 on tbl1.i1=tbl4.i1; 
select * from tbl1 a  left join tbl2 b on  a.i1=b.i1  left join tbl3 c on a.i1=c.i1  left join tbl4 d on a.i1=d.i1; 
select * from tbl1  left join tbl2 on  tbl1.i1=tbl2.i1  left join tbl3  on tbl1.i1=tbl3.i1  left join tbl4 on tbl1.i1=tbl4.i1 where tbl1.i1=1;
select * from tbl1  left join tbl2 on  tbl1.i1=tbl2.i1  left join tbl3  on tbl2.i1=tbl3.i1  left join tbl4 on tbl3.i1=tbl4.i1;
select * from tbl1 a  left join tbl2 b on a.i1=b.i1  left join tbl3 c on b.i1=c.i1  left join tbl4 d on c.i1=d.i1;
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select* from tbl1  left join tbl2 on  tbl1.i1=tbl2.i1  left join tbl3  on tbl1.i1=tbl3.i1  left join tbl4 on tbl1.i1=tbl4.i1; 
--enable_result_log
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select* from tbl1 a  left join tbl2 b on  a.i1=b.i1  left join tbl3 c on a.i1=c.i1  left join tbl4 d on a.i1=d.i1; 
--enable_result_log
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select* from tbl1  left join tbl2 on  tbl1.i1=tbl2.i1  left join tbl3  on tbl2.i1=tbl3.i1  left join tbl4 on tbl3.i1=tbl4.i1;
--enable_result_log
--replace_regex /Plan signature: [0-9]*/Plan signature/
--disable_result_log
explain select* from tbl1 a  left join tbl2 b on a.i1=b.i1  left join tbl3 c on b.i1=c.i1  left join tbl4 d on c.i1=d.i1;
--enable_result_log