GET_DDL提取目标元数据：ddl

创建对象的语句就是了提取表set line 200 pages 50000 wrap on long 999999 serveroutput onSQL> 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” —有没有感觉太乱了，逗—–如何简化呢？http://blog.itpub.net/26390465/viewspace-1764802/ –输出信息采用缩排或换行格式化EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘PRETTY’, TRUE);
–确保每个语句都带分号
EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘SQLTERMINATOR’, TRUE);–关闭表索引、外键等关联（后面单独生成）EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘CONSTRAINTS’, FALSE);
EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘REF_CONSTRAINTS’, FALSE);
EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘CONSTRAINTS_AS_ALTER’, FALSE);
–关闭存储、表空间属性
EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘STORAGE’, FALSE);
EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘TABLESPACE’, FALSE);
–关闭创建表的PCTFREE、NOCOMPRESS等属性
EXEC DBMS_METADATA.set_transform_param(DBMS_METADATA.session_transform, ‘SEGMENT_ATTRIBUTES’, FALSE);

set line 200 pages 50000 wrap on long 999999 serveroutput on*******查询表请使用：关闭创建表的PCTFREE、NOCOMPRESS等属性+换行格式化+分号 select dbms_metadata.get_ddl(‘TABLE’,’EMP’,’SCOTT’) FROM DUAL; *****查询索引  ==没啥好办法，上方：换行+分号吧select dbms_metadata.get_ddl(‘SEQUENCE’,’SYSTEM_GRANT’,’SYS’) FROM DUAL; *****查询索引的元数据：select dbms_metadata.get_ddl(‘INDEX’,’EMP_EMAIL_UK’,’SCOTT’)||’;’ FROM DUAL; *****表空间的元数据：select dbms_metadata.get_ddl(‘TABLESPACE’,’UNDO2′) from dual;  **效果：

SQL> select dbms_metadata.get_ddl(‘TABLE’,’EMP’,’SCOTT’) FROM DUAL;

DBMS_METADATA.GET_DDL(‘TABLE’,’EMP’,’SCOTT’)

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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)    ) ;