【标题】：Oracle9i新特性-使用DBMS_METADATA包获得对象DDL语句
【关键字】：c,MS,Oracle,DB,Oracle9i,9i,DBM,ME,AT,DD,META,DBMS,DATA,DDL,AD,Oracle9i,DBMS,METADATA,DDL
【来源】：网络

Oracle9i新特性-使用DBMS_METADATA包获得对象DDL语句

从Oracle9i开始Oracle提供了一个新的系统包DBMS_METADATA，可以用于提取对象创建的DDL语句。

这个Package功能极其强大，我们来看看它的使用方法.

1.获得表的创建语句.

SQL> desc dbms_metadata FUNCTION ADD_TRANSFORM RETURNS NUMBER ... FUNCTION GET_DDL RETURNS CLOB Argument Name Type In/Out Default? ------------------------------ ----------------------- ------ -------- OBJECT_TYPE VARCHAR2 IN NAME VARCHAR2 IN SCHEMA VARCHAR2 IN DEFAULT VERSION VARCHAR2 IN DEFAULT MODEL VARCHAR2 IN DEFAULT TRANSFORM VARCHAR2 IN DEFAULT ....

SQL> set long 2000
SQL> select dbms_metadata.get_ddl('TABLE','TEST') from dual;

DBMS_METADATA.GET_DDL('TABLE','TEST')
--------------------------------------------------------------------------------

CREATE TABLE "SYS"."TEST"
( "OWNER" VARCHAR2(30),
"OBJECT_NAME" VARCHAR2(128),
"SUBOBJECT_NAME" VARCHAR2(30),
"OBJECT_ID" NUMBER,
"DATA_OBJECT_ID" NUMBER,
"OBJECT_TYPE" VARCHAR2(18),
"CREATED" DATE,
"LAST_DDL_TIME" DATE,
"TIMESTAMP" VARCHAR2(19),
"STATUS" VARCHAR2(7),
"TEMPORARY" VARCHAR2(1),
"GENERATED" VARCHAR2(1),
"SECONDARY" VARCHAR2(1)
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
TABLESPACE "SYSTEM"