关于dbms_metadata.get_ddl 的使用

查询具体的表名大写加单引号.批量不加。

SCOTT@PROD>select dbms_metadata.get_ddl('TABLE','DEPT','SCOTT') CODE  from dual;

  CREATE TABLE "SCOTT"."DEPT"
   (    "DEPTNO" NUMBER(2,0),
        "DNAME" VARCHAR2(14),
        "LOC" VARCHAR2(13),
         CONSTRAINT "PK_DEPT" PRIMARY KEY ("DEPTNO")
  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
   ) 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"


SCOTT@PROD>

如果要查询所有表的结构呢:
下面只选取了一部分:

SCOTT@PROD>select dbms_metadata.get_ddl('TABLE',t.table_name) from user_tables t;

  CREATE TABLE "SCOTT"."OB_JEST"
   (    "ID" NUMBER(*,0),
        "NAME" VARCHAR2(25),
        "YEAR" NUMBER(*,0)
   ) SEGMENT CREATION DEFERRED
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
 NOCOMPRESS LOGGING
  TABLESPACE "USERS"


  CREATE TABLE "SCOTT"."ANIMALS"
   (    "NAME" VARCHAR2(10),
        "SPECIES" VARCHAR2(20),
        "DATE_OF_BIRTH" DATE
   ) SEGMENT CREATION DEFERRED
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
 NOCOMPRESS LOGGING
  TABLESPACE "USERS"


  CREATE TABLE "SCOTT"."OB_TEST"
   (    "ENAME" VARCHAR2(20)
   ) SEGMENT CREATION DEFERRED
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
 NOCOMPRESS LOGGING
  TABLESPACE "USERS"

也可以查询sp view sequence等等。做相应的替换就可以了。

select dbms_metadata.get_ddl('view',t.view_name) from user_views t;


SCOTT@PROD>select dbms_metadata.get_ddl('PROCEDURE',t.object_name) from user_objects t where object_type='PROCEDURE';

  CREATE OR REPLACE PROCEDURE "SCOTT"."CHANGE_SAL" (v_empno in number,
  	                                                v_out out number )
   as
    v_count number;
    begin
		select count(1) into v_count from emp where empno = v_empno;
		if v_count=0 then
		   v_out:=1;
		else
		   v_out:=0;
		end if;
		end;

CREATE OR REPLACE PROCEDURE "SCOTT"."PROCEDURE_1" (v_1 in number)
		as
		    type dept_n is table of emp%rowtype index by binary_integer;
		    v_dept dept_n;
		begin
		        select empno,ename,job bulk collect into v_dept from emp;
		        for i in v_dept.first..v_dept.last loop
		               dbms_output.put_line(v_dept(i).empno);

		          end loop;
		end;


SCOTT@PROD>