-Dr. Paul Dorsey, President, Dulcian, Inc., Oracle Magazine PL/SQL Developer of the Year 2007, and President Emeritus, New York Oracle Users Group "This is a fascinating guide into the world of Oracle SQL with an abundance of well-collected... (展开全部) 我来说两句 短评 ··· 热门...
通过%ISOPEN属性判断游标是否打开,%ROWCOUNT判断获取行数。 2、隐式游标:由系统定义并为它创建工作区域,并且隐式的定义打开提取关闭,隐式游标的游标名就是'SQL',属性和显示游标相同,主要用于对单行select语句或dml操作进行处理。 Example:又用户输入员工号修改员工工资如成功则打印输出成功标志。 为了尽量不改变原表,...
Oracle PL/SQL实例精解 对于初学ORACLE来说,这的确是本很不错的书。 入门比较简单,从最基本的讲起,关键此书,不像图灵的那些讲很多,似乎看起来很简单,但真正动手的时候却发现困难重重。 书中的练习是值得好好做的。从最基本的东西开始练习,慢慢明白其中的奥妙。 一本不可多得的ORACLE的入门级图... (展开) ...
或者create or replace directory dpdata as '/u01/app/oracle/oracledata/dump'; 2.查看管理理员目录 select * from dba_directories; 3.解锁scott用户 sqlplus /nolog 管理员登录:conn sys/password as sysdba alter user scott identified by tiger; 解锁alter user scott account unlock; 验证:conn scott/tige...
Oracle 中的sql函数以及分页 SELECT LPAD('Page 1',15,'*.')"LPAD example"FROM DUAL; 1.分页查询 (1)方法一:使用 between and 来实现分页 select*from(selectemp.*,rownum rnfromemp )wherern between4and6 (2)方法二:使用 rownum 来实现分页
然后hr用户用sql developer去连接,几个参数为 hr:qwe123:ip:port:sid(orcl)就成功了 alter user hr account lock 锁定账户 alter user hr password expire 密码过期 alter user hr identified by zxcasd 修改密码 select distinct user_password from user_info; 过滤出user_password这一列,并去除重复行(加distin...
/* code returned by the OCI calls */ /* Dequeue by correlation and msgid */ /* Connect to the database: */ EXEC SQL CONNECT :user; EXEC SQL WHENEVER SQLERROR DO sql_error("Oracle Error :"); /* Allocate space in the object cache for the host variable: */ EXEC SQL ALLOCATE :mes...
SDK for PL/SQL Command-line interface (CLI) Developer Events and Webinars - replays Explore Oracle Developer event replays and recent webinars, hosted by technical experts. Learn moreabout developer events and webinars - replays Developer events ...
Let’s see an example of unpivoting multiple columns. First,dropand recreate thesale_statstable: DROPTABLEsale_stats;CREATETABLEsale_stats(idINTPRIMARYKEY, fiscal_yearINT, a_qtyINT, a_valueDEC(19,2), b_qtyINT, b_valueDEC(19,2) );Code language:SQL (Structured Query Language)(sql) ...
Now come to the Linux Machine and create a table in Oracle with the same structure as in MS-ACCESS by taking appropriate datatypes. For example, create a table like this $ sqlplus scott/tiger SQL> CREATE TABLE emp (empno number(5), ...