Oracle常用腳本備忘

1、創建一個表T2，使之具有T1表的結構
        CREATE TABLE T2 AS SELECT * FROM T1 WHERE 1<>2;

2、創建一個表T2，使之具有T1表的結構和數據
        CREATE TABLE T2 AS SELECT * FROM T1;

3、修改michael用戶的確省表空間爲users，臨時表空間爲temp，並給他在users表空間中創建15M的空間配額
ALTER USER michael DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp QUOTA 15m ON users;

4、建表語句腳本示例，注意大小寫
        SET ECHO OFF
        SPOOL Material_test_items.log
        CREATE TABLE Material_test_items
        (
         Material_test_no         VARCHAR2(6)     NOT NULL,
         Test_date                   DATE                      NOT NULL,
         Category                    VARCHAR2(2)     NOT NULL,
         Mtrl_item_no              VARCHAR2(2)     NOT NULL,
         Mtrl_item_value          VARCHAR2(60)     NULL ,
         Modify_date               DATE  NULL ,                                
         Modify_user               VARCHAR2(30)     NULL ,
         Insert_user                VARCHAR2(30)     NULL ,
         Insert_date                DATE  NULL ,
         Data_owner                VARCHAR2(10)     NULL ,
         CONSTRAINT material_test_items_PK PRIMARY KEY (Material_test_no, Test_date, Category, Mtrl_item_no))
         STORAGE (Initial    65536
                     Next        65536
                     Minextents  1
                     Maxextents  505
                     Pctincrease 0);
        SPOOL OFF
        SET ECHO ON

5、user_ind_columns        user_cons_columns        user_constraints

user_tables                dba_tables                    all_tables
user_views               dba_views                       all_views 
user_indexs               dba_indexs                     all_indexs   
user_sequences          dba_sequences             all_sequences         
user_synonyms            dba_synonyms             all_synonyms   

6、將一個表中的數據增加到另一個數據庫中的同名表中去，這種方法比數據庫鏈省事的多。
COPY FROM username/password@database APPEND table1 USING SELECT * FROM table1;
如果需要將數據替換，就將APPEND替換成REPLACE