Oracle»ù´¡Óï¾ä
1¡¢
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connect uuu/ooo
connect
sys/ok as sysdba
2¡¢
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create tablespace stu(±í¿Õ¼äÃû
) datafile
‘
e:\stu.dbf
’
size 100m autoextend on next 5m maxsize 500m;
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drop tablespace stu including contents and datafiles;
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create user uuu(Óû§Ãû
) identified by uuu(
ÃÜÂë
) default tablespace stu(
±í¿Õ¼äÃû
);
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alter user uuu identified by ppp(xÐÂÃÜÂë
);
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drop user uuu casoade;
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alter user uuu account lock;
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alter user uuu account unlock;
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grant all to uuu(Óû§Ãû
);
//ÊÚȨËùÓÐȨÏÞ
grant create session to uuu;
//ÊÚȨÁ¬½ÓÊý¾Ý¿âȨÏÞ
grant connect,resource to uuu;
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select * from user_sys_privs;
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revoke all from uuu;
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create table STUDENT
(
STUNO VARCHAR2(20) not null,
STUNAME VARCHAR2(50),
BIRTHDAY DATE,
XUELI VARCHAR2(10),
SEX INTEGER
)
tablespace STUDB
;
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drop table student;
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alter table student
add constraint
pk_stuno
primary key(stuNo);
´´½¨check
Ô¼Êø
alter table
student
add constraint
ck_name
check (
saly>100
);
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alter table STUDENT add constraint FK_SEX foreign key (SEX) refe
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The following are number examples for the to_char
function.
to_char
(1210.73,
'9999.9')
would return '1210.7'
to_char
(1210.73,
'9,999.99')
would return '1,210.73'
to_char
(1210.73,
'$9,999.00')
would return
'$1,210.73'
to_char
(21,
'000099')
would return '000021'
The foll ......
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--²éËÀËøµÄ»á»°¡£
select A.sid, b.serial#,
decode(A.type,
'MR', 'Media Recovery',
'RT','Redo Thread',
'UN','User Name',
'TX', 'Transaction',
'TM', ' ......
1.ʹÓÃsqlldr
2.Ê×ÏȽ¨Á¢ÏàÓ¦µÄ±í
create table test(ip1 number, ip2 number, locate varchar2(512),country varchar2(60),province varchar2(60),city varchar2(60))
3.д¿ØÖÆÎļþ city.ctl
load data
infile 'c:\city.txt'
append into table test
--when country='Öйú'
fields terminated by ','
(
ip1,
ip ......
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