小编给大家分享一下dbms_metadata怎么用,希望大家阅读完这篇文章之后都有所收获,下面让我们一起去探讨吧!
dbms_metadata包中的get_ddl函数
1.得到一个表或索引的ddl语句
SELECT DBMS_METADATA.GET_DDL('TABLE','DEPT','SCOTT') FROM DUAL;
select dbms_metadata.get_ddl('INDEX','PK_DEPT','SCOTT') from dual;
2.得到一个用户下的所有表,索引,存储过程的ddl
SELECT DBMS_METADATA.GET_DDL(U.OBJECT_TYPE, u.object_name)
FROM USER_OBJECTS u
where U.OBJECT_TYPE IN ('TABLE','INDEX','PROCEDURE');
存储过程:查看 存储过程 的定义语句
SQL> SET LONG 9999
SQL> select dbms_metadata.get_ddl('PROCEDURE','ANALYZEDB','NEWCCS') from dual;
CREATE OR REPLACE PROCEDURE "NEWCCS"."ANALYZEDB"
IS
CURSOR get_ownertable
IS
SELECT table_name
FROM user_tables;
ownertable get_ownertable%ROWTYPE;
BEGIN
OPEN get_ownertable;
LOOP
FETCH get_ownertable
INTO ownertable;
EXIT WHEN get_ownertable%NOTFOUND;
EXECUTE IMMEDIATE 'analyze table '
|| ownertable.table_name
|| ' compute statistics for table for all indexes for all indexed columns';
END LOOP;
EXCEPTION
WHEN OTHERS
THEN
RAISE;
END;
3.得到所有表空间的ddl语句
SELECT DBMS_METADATA.GET_DDL('TABLESPACE', TS.tablespace_name)
FROM DBA_TABLESPACES TS;
4.得到所有创建用户的ddl
SELECT DBMS_METADATA.GET_DDL('USER',U.username)
FROM DBA_USERS U;
================================================================================
9i 中可以利用DBMS_METADATA.GET_DDL包得到数据库的对象的ddl脚本。如下(SQLPLUS中执行):
a. 获取单个的建表、视图和建索引的语法
set pagesize 0
set long 90000
set feedback off
set echo off
spool DEPT.sql
select dbms_metadata.get_ddl('TABLE','TAB_NAME','SCOTT') from dual;
select dbms_metadata.get_ddl('VIEW','VIEW_NAME','SCOTT') from dual;
select dbms_metadata.get_ddl('INDEX','IDX_NAME','SCOTT') from dual;
spool off;
b.获取一个SCHEMA下的所有建表、视图和建索引的语法,以scott为例:
set pagesize 0
set long 90000
set feedback off
set echo off
spool schema.sql
connect scott/tiger;
SELECT DBMS_METADATA.GET_DDL('TABLE',u.table_name) FROM USER_TABLES u;
SELECT DBMS_METADATA.GET_DDL('VIEW',u.VIEW_name) FROM USER_VIEWS u;
SELECT DBMS_METADATA.GET_DDL('INDEX',u.index_name) FROM USER_INDEXES u;
spool off;
c. 获取某个SCHEMA的建全部存储过程的语法
set pagesize 0
set long 90000
set feedback off
set echo off
spool procedures.sql
select DBMS_METADATA.GET_DDL('PROCEDURE',u.object_name) from user_objects u where object_type = 'PROCEDURE';
spool off;
d. 获取某个SCHEMA的建全部函数的语法
set pagesize 0
set long 90000
set feedback off
set echo off
spool function.sql
select DBMS_METADATA.GET_DDL('FUNCTION',u.object_name) from user_objects u where object_type = 'FUNCTION';
spool off;
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原创文章,作者:carmelaweatherly,如若转载,请注明出处:https://blog.ytso.com/205290.html