20150721-Oracle的元SQL

    
    
    
    

     
     
     
     
SELECT TABLE_NAME 表名,COLUMN_ID 列序号,COLUMN_NAME 列名,
     
     
     
     
CASE DATA_TYPE
     
     
     
     
WHEN 'DATE' THEN DATA_TYPE
     
     
     
     
WHEN 'NUMBER' THEN DATA_TYPE||'('||DATA_PRECISION||','||DATA_SCALE||')' 
     
     
     
     
WHEN 'CHAR' THEN DATA_TYPE||'('||DATA_LENGTH||')'
     
     
     
     
WHEN 'VARCHAR2' THEN DATA_TYPE||'('||DATA_LENGTH||')'
     
     
     
     
ELSE DATA_TYPE END 数据类型,DECODE(NULLABLE,'N','必填','可Null') 是否为空 
     
     
     
     
FROM USER_TAB_COLS
     
     
     
     
ORDER BY TABLE_NAME,COLUMN_ID
     
     
     
     

     
     
     
     
--返回 CLOB 类型
     
     
     
     
select dbms_metadata.get_ddl('TABLE','TWIPD_MASTER','TW_HSP_PMPA') 建表语句 from dual;
    
    
    
    

http://czmmiao.iteye.com/blog/1004873

    
    
    
    

     
     
     
     
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');
     
     
     
     

     
     
     
     
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;
    
    
    
    

     
     
     
     

      
      
      
      
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;
     
     
     
     

来自为知笔记(Wiz)