Oracle碎碎念~2

SQL> select column_name,data_type,data_length from all_tab_columns where owner=‘SCOTT‘ and  table_name=‘EMP‘;

COLUMN_NAME    DATA_TYPE  DATA_LENGTH
--------------- ---------- -----------
EMPNO        NUMBER            22
ENAME        VARCHAR2        10
JOB        VARCHAR2         9
MGR        NUMBER            22
HIREDATE    DATE             7
SAL        NUMBER            22
COMM        NUMBER            22
DEPTNO        NUMBER            22

8 rows selected.