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ORACLE进阶(五)SCHEMA解惑
2022-07-07 10:55:00 【InfoQ】
一、定义
schema
schema
schema
tables, views, sequences, stored procedures, synonyms, indexes, clusters, and database links
schema
schema
schema
schema
Oracle
schema
schema
create schema
schema
schem
shcema
schema
schema
user
schema
schema
schema
sheman
select * from emp;
select * from scott.emp
schema.object
schema
schema
二、举例
SQL> Gruant dba to scott
SQL> create table test(name char(10));
Table created.
SQL> create table system.test(name char(10));
Table created.
SQL> insert into test values('scott');
1 row created.
SQL> insert into system.test values('system');
1 row created.
SQL> commit;
Commit complete.
SQL> conn system/manager
Connected.
SQL> select * from test;
NAME
----------
system
SQL> ALTER SESSION SET CURRENT_SCHEMA = scott; --改变用户缺省schema名
Session altered.
SQL> select * from test;
NAME
----------
scott
SQL> select owner ,table_name from dba_tables where table_name=upper('test');
OWNER TABLE_NAME
------------------------------ ------------------------------
SCOTT TESTSYSTEM TEST
schema
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