JSP中調用Oracle預存程序的小例子*執行一條insert語句並傳參數*/ create or replace procedure p_test2(i in number) as begin insert into t values (i,′x′||to_char(i)); commit; end; / <%@ page language="java" contentType="text/html;charset=gb2312"%> <%@page
1、根據表NEWPRODUCTS的PRODUCT_ID欄位是否匹配來updates表PRODUCTS的資訊:SQL> MERGE INTO products p 2 USING newproducts np 3 ON (p.product_id = np.product_id) 4 WHEN MATCHED THEN 5 UPDATE 6 SET p.product_name = np.product_name, 7 p.category =
在 SQLPLUS中,直接用 DESC[ribe] tablename 即可。可要是在外部應用程式調用查看ORACLE中的表結構時,這個命令就不能用了。只能用下面的語句代替:看欄位名與資料類型 select * from cols WHERE TABLE_name=upper('table_name'); (user_tab_columns縮寫cols)查看全部列select * from user_tab_columns where table_name = upper(‘tablename’
--按表中資料量分區 less than 小於 最大值如果3,這個分區只能存入兩條資料----30000000----60000000--create table dtf_test ( dtf_id number primary key, item_id number(8) not null, item_description varchar2(300), dtf_date date not null ) partition by range (dtf_id) (
我設計的幾題ORACLE面試題1. 何謂oracle中的裸裝置?答:裸裝置是指繞過檔案系統直接存取的儲存空間2.如何良好的分辨使用者從哪台機器登陸ORACLE?答:SELECT machine , terminal FROM V$SESSION;3.如何取得觸發器、過程、函數的建立指令碼?答:desc user_sourceuser_triggers4.如何查看最大會話數?SELECT * FROM V$PARAMETER WHERE NAME LIKE
下面是我整理的一些ORACLE筆試題與答案。1.建立資料表空間neuspace,資料檔案命名為neudata.dbf,存放在d:\data目錄下,檔案大小為200MB,設為自動成長,增量5MB,檔案最大為500MB。答:create tablespace neuspace datafile ‘d:\data\neudata.dbf’ size 200m auto extend on next 5m maxsize 500m;2.
Similar to Oracle database, DB2 also has the conception of table space. A table space is the storage structure containing tables, indexes, larger objects/long data such as LOB Object, therefore the table space orginze these datas in database to
Oracle MYSQL DB2 sql分頁Oracle, MYSQL, DB2, sql, paginationOracleselect * from (select rownum,name from user_tables where rownum <= endIndex)where rownum > startIndex如果加了order就更麻煩了select * from (select rownum,name from user_tables order by