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การใช้คำสั่งใน mySQL :!?:, show create table dept;, desc dept; หรือ show…
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insert into person values (null, ‘Somchai’,’Sandee’,’Clerk’,8000,11,’2005/12/25’);
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select * from person where position not in (‘sales’,’manager’,’clerk’);
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select person.firstname, person.lastname, person.dept_no, dept.dept_name from dept, person
where dept.dept_no=person.dept_noand dept.dept_no=13;
select position, count(*) from person group by position;
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