Oracle如何查询一个对象的完整定义语句


		Oracle如何查询一个对象的完整定义语句
 
语法：  www.zzzyk.com  
DBMS_METADATA.GET_DDL (
object_type     IN VARCHAR2,
name               IN VARCHAR2,
schema           IN VARCHAR2 DEFAULT NULL,
version            IN VARCHAR2 DEFAULT 'COMPATIBLE',
model              IN VARCHAR2 DEFAULT 'ORACLE',
transform        IN VARCHAR2 DEFAULT 'DDL')
RETURN CLOB;
示例：select dbms_metadata.get_ddl('TABLE','EMP','SCOTT') from dual;
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[sql] 
SQL> select dbms_metadata.get_ddl('TABLE','EMP','SCOTT') from dual;  
  
DBMS_METADATA.GET_DDL('TABLE','EMP','SCOTT')  
--------------------------------------------------------------------------------  
  
  CREATE TABLE "SCOTT"."EMP"  
   (    "EMPNO" NUMBER(4,0),  
        "ENAME" VARCHAR2(10),  
  
--设置LONG和pagesize后能完全显示  
SQL> SET LONG 2000000  
SQL> SET PAGESIZE 0  
SQL> select dbms_metadata.get_ddl('TABLE','EMP','SCOTT') from dual;  
  
  CREATE TABLE "SCOTT"."EMP"  
   (    "EMPNO" NUMBER(4,0),  
        "ENAME" VARCHAR2(10),  
        "JOB" VARCHAR2(9),  
        "MGR" NUMBER(4,0),  
        "HIREDATE" DATE,  
        "SAL" NUMBER(7,2),  
        "COMM" NUMBER(7,2),  
        "DEPTNO" NUMBER(2,0),  
         CONSTRAINT "PK_EMP" PRIMARY KEY ("EMPNO")  
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS  
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645  
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT  
 CELL_FLASH_CACHE DEFAULT)  
  TABLESPACE "USERS"  ENABLE,  
         CONSTRAINT "FK_DEPTNO" FOREIGN KEY ("DEPTNO")  
          REFERENCES "SCOTT"."DEPT" ("DEPTNO") ENABLE  
   ) SEGMENT CREATION IMMEDIATE  
  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 FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)  
  TABLESPACE "USERS"