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minvalue 1
maxvalue 999999999999
start with 1
increment by 1
cache 20;
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where job in(select job from emp group by job having min(sal)>1500)
group by job;
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select e.ename,d.dname,m.ename,e.sal,sa. ......

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ALTER TABLE SCHEMA.PREFIX_INFO ADD (
CONSTRAINT PK_PREFIX_INFO PRIMARY KEY (INFO_ID));
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alter table schema.prefix_info add constraint prefix_info_pkey primary key(info_id);
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create table emp1
as
select * from emp where deptno = 20;
updateµôemp1ÖеIJ¿·ÖÊý¾Ý
update emp1
set sal = sal + 100,
comm = nvl(comm,0) + 50
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crontab -u root /root/root_cron
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