Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

OracleÊý¾Ý¿â»ñÈ¡µ±Ç°Óû§Á¬½ÓÊýµÄsqlÓï¾ä

¾ßÌåʵÏÖÈçÏ£º
SQL> select count(*) from v$session  #Á¬½ÓÊý
SQL> Select count(*) from v$session where status='ACTIVE'¡¡#²¢·¢Á¬½ÓÊý
SQL> show parameter processes  #×î´óÁ¬½Ó
SQL> alter system set processes = value scope = spfile;ÖØÆôÊý¾Ý¿â  #ÐÞ¸ÄÁ¬½Ó


Ïà¹ØÎĵµ£º

һЩ»ù±¾µÄSQLÃüÁî

--ÏÔʾ°æ±¾ºÅ£¬µ±Ç°ÈÕÆÚ
SELECT VERSION(),CURRENT_DATE(),NOW();
--Ãâ·ÑµÄ¼ÆËãÆ÷
SELECT (20+5)*4 AS RESULT,SIN(PI()/3);
--´´½¨Êý¾Ý¿â
CREATE DATABASE databasename;
--ɾ³ýÊý¾Ý¿â
DROP DATABASE databasename;
--ÏÔʾµ±Ç°´æÔÚµÄÊý¾Ý¿â
SHOW DATABASES;
--Ñ¡ÔñÊý¾Ý¿â
USE ......

SQL Server 2005: Recursive Hierarchies to XML

Suppose we have a recursive hierarchy stored in a relational database and we want to write it to XML.  This might be for a variety of reasons – e.g. as a pre-cached input to a UI control, to export to another system using a pre-defined format, etc.
 
In SQL Server 2000, in order to ......

DB2 SQL PL½éÉÜ


DB2 SQL PL
SQL PLÊÇDB2ËùÖ§³ÖµÄ¹ý³Ì»¯ÓïÑÔ£¬ËüÊÇSQL/PSM±ê×¼µÄÒ»¸ö×Ó¼¯¡£Æä¸ù¾ÝÓ¦Ó÷¶Î§²»Í¬£¬ÓÖ·ÖΪInline SQL PL£¬Embeded SQL PLºÍCompiled SQL PL¡£
Inline SQL PL
ÊÊÓ÷¶Î§£º´¥·¢Æ÷¡¢º¯ÊýºÍ·½·¨£¬Ö§³Ö²¿·ÖSQL PL£¬Ê¹ÓÃʱҪעÒâһЩÏÞÖÆ
Óï·¨¹æÔò£ºBEGIN ATOMIC ... END
Embeded SQL PL
ÊÊÓ÷¶Î§£ºÇ¶Èëʽ£¬Åäº ......

SQL serverÑ­»·ÖÐÿ¸ôÒ»¶Îʱ¼ä,ÔËÐÐÒ»´ÎÓï¾ä

×î½ü×öÒ»¸öÏîÄ¿,˵ÆðÀ´±È½Ï¶ñ,ÊÇ´ÓÁíÒ»¸ö±íÖжÁÈ¡Êý¾ÝË͵½Õâ¸ö±íÖÐ.¶øÇÒÒªÓô¥·¢Æ÷Ñ­»·ÕâЩÄÚÈÝÔÙ·¢³öÈ¥.
¿ÉÊÇÈç¹ûÕâ¸öÊý¾ÝÁ¿ºÜ´óµÄ»°,»áÒ»ÏÂ×Ó¹ÒËÀ.ËùÒÔ¾ÍÏëµ½ÁË.Äܲ»ÄÜ,ÿ´ÎÎÒ´«Ò»µã,¸ô¼¸ÃëÔÙËÍÒ»µã.
ÏÂÃæÊÇÒ»¸ö¼òµ¥µÄÀý×Ó
declare @i int
set @i=1
while @i<101
begin
insert into Cname ([name],csex,Number) ......

ORACLE SQLÓÅ»¯ ORACLEÖ´Ðмƻ®

Last login: Mon Feb  8 14:13:19 2010 from 192.168.1.249
ipnet
-bash-3.00$
-bash-3.00$ ipnet
-bash: ipnet: command not found
-bash-3.00$ su - oracle
Password:
eastcsu: incorrect password
-bash-3.00$ eastcom
-bash: eastcom: command not found
-bash-3.00$ su - oracle
Password:
[oracl ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ