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select score,id,name
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where id > 2 and id < 7
union
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from student
where id < 4
union
select score,id,name
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order by id desc
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select * from people
where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)
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CRUD
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create,alter,drop,rename,truncate(Çå¿Õ)
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grant,revoke
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CREATE OR REPLACE VIEW SM_V_UNIT_AUTH AS
SELECT T2.UNIT_ID,
T2.SUPER_UNIT_ID,
T1.AUTH_ID,
T1.AUTH_NAME,
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