select  md5("200000foo") =10, sleep(2), rand(100);
select * from my1 where md5("110") =10;
select  md5("100foo") =10;
select * from my1 where md5("100") =10;
select sleep(2);
select * from tst where lname='Doe';
select 1,2,3,4,5,6 from tst;
select * from tst where fname like '%a%';
select * from tst where lname like '%e%' order by fname;
insert into tst values ("John","Doe"),("Plato",null),("Nietzsche","");
drop table if exists tst;
create table tst(fname varchar(30), lname varchar(30));
update tst set lname="Human" where fname like '%a%' or lname like '%a%';
delete from tst where lname like '%man%' and fname like '%ard%';
select 100 from tst where fname='10' or lname like '%100%';
select 1,20,300,4000 from tst where name='1000' or name='200' or name='30' or name='4';
select count(1),count(10),count(100),count(2),count (20),count(200) from tst;