我的任務是查找關係表的名稱及其屬性的名稱,屬性的數據類型,NULL/NOT NULL約束和我的帳戶擁有的所有表的列ID 。我該如何去做呢? 我都試過了,如何使用系統目錄視圖
SELECT * FROM information_schema.SCHEMATA S;
,但得到
ERROR at line 1:
ORA-00942: table or view does not exist
也試過
SELECT table_name,
column_name,
data_type,
data_length "LENGTH",
data_precision "PRECISION",
FROM user_tab_columns WHERE table_name = 'PART'
ORDER BY user_tab_columns.table_name, column_name;
FROM user_tab_columns WHERE table_name = 'PART'
*
ERROR at line 6:
ORA-00936: missing expression
誰能給我一個想法,我應該怎麼辦?