Oracle学习必备 Today’s database management systems implement a standard language known as Structured Query Language, or SQL. Among other things, SQL allows you to retrieve, add, update, and delete information in a database. SQL is a standard language re
ORACLE函数大全 ________________________________________ 作者：[本站编辑] 来源：[CSDN] 浏览：[ ] SQL中的单记录函数 1.ASCII 返回与指定的字符对应的十进制数; SQL> select ascii('A') A,ascii('a') a,ascii('0') zero,ascii(' ') space from dual; A A ZERO SPACE --------- --------- --------- ----
第一章：日志管理 1.forcing log switches sql> alter system switch logfile; 2.forcing checkpoints sql> alter system checkpoint; 3.adding online redo log groups sql> alter database add logfile [group 4] sql> ('/disk3/log4a.rdo','/disk4/log4b.rdo')
