select md5(?) =?, sleep(?), rand(?);
select * from my1 where md5( ? ) =?;
select md5( ? ) =?;
select * from my1 where md5(?) =?;
select sleep (?);
select * from tst where lname=?;
select ? , ? , ? , ? , ? , ? from tst;
select * from tst where fname like ?;
select * from tst where lname like ? order by fname;
insert into tst values (?,?),(?,null),(?,?);
drop table if exists tst;
create table tst(fname varchar(?), lname varchar(?));
update tst set lname =? where fname like ? or lname like ?;
delete from tst where lname like ? and fname like ?;
select ? from tst where fname=? or lname like ?;
select ?,?,?,? from tst where name=? or name=? or name=? or name=?;
select count(?), count(?), count(?), count(?), count (?),count( ? ) from tst ;