1,DESCRIBE 命令
使用方法如下:
SQL> describe nchar_tst(nchar_tst为表名)
显示的结果如下:
?名称????????????????????????????????????? 是否为空? 类型
?----------------------------------------- -------- ----------------------------
?NAME?????????????????????????????????????????????? NCHAR(6)
?ADDR?????????????????????????????????????????????? NVARCHAR2(16)
?SAL??????????????????????????????????????????????? NUMBER(9,2)
2,DBMS_METADATA.GET_DDL包
使用方法如下:
SQL> SELECT DBMS_METADATA.GET_DDL('TABLE','NCHAR_TST') FROM DUAL;
如果显示的结果并未完整,如下:
? CREATE TABLE "SCOTT"."NCHAR_TST"
?? (??? "NAME" NCHAR(6),
??????? "ADDR" NVARCHAR2(16
那么修改如下:
SQL> SET LONG 9999
SQL> SELECT DBMS_METADATA.GET_DDL('TABLE','NCHAR_TST') FROM DUAL;
则显示如下的结果:
DBMS_METADATA.GET_DDL('TABLE','NCHAR_TST')
------------------------------------------
? CREATE TABLE "SCOTT"."NCHAR_TST"
?? (??? "NAME" NCHAR(6),
??????? "ADDR" NVARCHAR2(16),
??????? "SAL" NUMBER(9,2)
?? ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 LOGGING
? STORAGE(INITIAL 12288 NEXT 12288 MINEXTENTS 1 MAXEXTENTS 249 PCTINCREASE 50
? FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "SYSTEM"