
复制SQL> DESC DBA_USERS; NameNull?何查号 Type ----------------------------------------- -------- ---------------------------- USERNAME NOTNULL VARCHAR2(30) USER_ID NOTNULL NUMBER PASSWORD VARCHAR2(30) ACCOUNT_STATUS NOTNULL VARCHAR2(32) LOCK_DATE DATE EXPIRY_DATE DATE DEFAULT_TABLESPACE NOTNULL VARCHAR2(30) TEMPORARY_TABLESPACE NOTNULL VARCHAR2(30) CREATED NOTNULLDATE PROFILE NOTNULL VARCHAR2(30) INITIAL_RSRC_CONSUMER_GROUP VARCHAR2(30) EXTERNAL_NAME VARCHAR2(4000) 1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.