һЩoracleµÄÃüÁî¼°º¯Êý °üÀ¨decodeµÈ
1¡¢set linesize 100; ÉèÖó¤¶È
2¡¢set pagesize 30; ÉèÖÃÿҳÏÔʾÊýÄ¿
3¡¢em a.sql ´ò¿ª¼Çʱ¾
4¡¢@ a Ö´ÐÐÎļþaÖеĴúÂ룬¿ÉÖ¸¶¨ÎļþµÄ·¾¶ @d:a.txt
5¡¢conn Óû§Ãû/ÃÜÂë ¸ù¾ÝÓû§ÃûºÍÃÜÂëÁ¬½ÓÊý¾Ý¿â Èç¹ûÁ¬½Ó³¬¼¶¹ÜÀíÔ±(sys) ÔòÓ¦¼ÓÉÏas sysdba;
6¡¢show user; ÏÔʾµ±Ç°Á¬½ÓµÄÓû§
7¡¢select * from tab; µÃµ½µ±Ç°Óû§ÏµÄËùÓбí
8¡¢desc temp; ²é¿´±í½á¹¹
9¡¢/ ¼ÌÐøÖ´ÐÐÉÏÒ»¸ö²éѯÓï¾ä
clear scr; ÇåÆÁ
×Ö·ûº¯Êý
10¡¢select upper('coolszy') from dual; ½«Ð¡Ð´×Öĸת»»³É´óд£¬dual ΪһÐé±í
11¡¢select lower('KUKA') from dual; ½«´óд×Öĸת»»³ÉСд
12¡¢select initcap('kuka') from dual; ½«Ê××Öĸ´óд
13¡¢select concat('Hello',' world') from dual; Á¬½Ó×Ö·û´®£¬µ«Ã»ÓÐ||ºÃÓÃselect concat('Hello','world') from dual;
14¡¢select substr('hello',1,3) from dual; ½ØÈ¡×Ö·û´®
15¡¢select length('hello') from dual; Çó×Ö·û´®³¤¶È
16¡¢select replace('hello','l','x') from dual; Ìæ»»×Ö·û´®
17¡¢select substr('hello',-3,3) from dual; ½ØÈ¡ºóÈýλ
ÊýÖµº¯Êý
18¡¢select round(789.536) from dual; ËÄÉáÎåÈ룬ÉáȥСÊý
19¡¢select round(789.536,2) from dual; ±£ÁôÁ½Î»Ð¡Êý
20¡¢select round(789.536,-1) from dual; ¶ÔÕûÊý½øÐÐËÄÉáÎåÈë
21¡¢select trunc(789.536) from&n
Ïà¹ØÎĵµ£º
¿ªÊ¼ÔÚmyeclipse6.5ÖÐDB BROWERн¨ÁËÒ»¸öÊý¾Ý¿âÁ¬½Ó£¬Èçͼ£º
Ò»Á¬½Ó£¬±¨³öÁËÁ½¸ö´íÎó£º
1. ORA-00604 error occurred at recursive SQL level string.
2.ORA-12705: invalid or unknown NLS parameter value.
²é×ÊÁϺó½â¾ö£¨ÆÚ¼äÎÒ»¹¸Ä¹ýtestÓû§µÄÁ¬½ÓȨÏÞ£©£º
½«MyEclipseÖÐeclipseĿ¼ÏµÄeclipse.iniÎļþ£¬° ......
Ò».OracleÊý¾Ý¿âÖг£ÓõÄÊý¾ÝÀàÐÍ
varchar2(³¤¶È)¿É±ä³¤×Ö·û´®
char(³¤¶È) ¶¨³¤
number()±íʾÕûÊý»òÕ߸¡µãÊýnumber(8) number(8,2)
clog ×Ö·ûµÄ´ó¶ÔÏó
blog ¶þ½øÖƵĴó¶ÔÏó
¶þ.Êý¾Ý¿â²éѯ
1£©SELECTÓï¾ä
´Ó±íÖÐÌáÈ¡²éѯÊý¾Ý.Ó﷨ΪSELECT [DISTINCT] {column1,column2,…} from tablename WHERE {con ......
½ñÌìÉÏÎç²âÊÔÒ»¸ö·ÃÎÊORACLEµÄc++À࣬ÎĵµÉÏ˵Á¬½Ó×Ö·û´®µÄ¸ñʽΪ"Óû§Ãû/¿ÚÁî@Á¬½ÓÃû"£¬ÎÒ²»ÊÇÌ«Ã÷°×Á¬½ÓÃûµ½µ×ΪºÎÎÏÈÓÃIPµØÖ·ÊÔÁËÊÔ
£¬×ÜÊDZ¨´í£¬ËµÎÞ·¨½âÎöµÄÁ¬½Ó±êʶ·û£¬ºóÀ´ÔÚÍøÉϲéÁË°ëÌ죬¿´µ½ÓиöÈË˵Á¬½ÓÃû¾ÍÊÇ$(ORACLE_HOME)/network/admin/tnsnames.oraÀﶨÒåµÄÊý¾Ý¿âÁ¬½ÓµÄÃû³Æ£¬ÊÔÁËһϣ¬¹ûÈ»Èç´Ë¡£ ......
×î½üÔÚʹÓÃOracle×öÎļþÉÏ´«£¬ÒªÇó½«ÎļþÊý¾Ý±£´æµ½Êý¾Ý¿âÖС£OracleÌṩÁËBlobÓÃÀ´´æ´¢¶þ½øÖÆ´ó¶ÔÏóÊý¾Ý£¬¿ÉÊÇËüºÍJava.sqlÀïÃæµÄBlob²»¼æÈÝ£¬¾³£µ¼ÖÂBlob×Ö¶ÎÎÞ·¨Ëø¶¨»òÕß²Ù×÷ʧ°Ü¡£ÓÉÓÚÒÔǰûÓÐ×ö¹ýÕâÑùµÄÀý×Ó£¬ËùÒÔ»¨Á˲»ÉÙʱ¼ä²Å½â¾ö¡£
ÎÒʹÓõÄÊÇstruts2.1.8+spring2.5+hibernate3.2£¬ÏÂÃæÊÇÏà¹Ø´úÂ룺
springÅäÖÃ ......
¡¡¡¡OracleÊý¾Ýµ¼Èëµ¼³öimp/exp¾ÍÏ൱ÓÚoracleÊý¾Ý»¹ÔÓ뱸·Ý¡£expÃüÁî¿ÉÒÔ°ÑÊý¾Ý´ÓÔ¶³ÌÊý¾Ý¿â·þÎñÆ÷µ¼³öµ½±¾µØµÄdmpÎļþ£¬impÃüÁî¿ÉÒÔ°ÑdmpÎļþ´Ó±¾µØµ¼Èëµ½Ô¶´¦µÄÊý¾Ý¿â·þÎñÆ÷ÖС£ ÀûÓÃÕâ¸ö¹¦ÄÜ¿ÉÒÔ¹¹½¨Á½¸öÏàͬµÄÊý¾Ý¿â£¬Ò»¸öÓÃÀ´²âÊÔ£¬Ò»¸öÓÃÀ´ÕýʽʹÓÃ……
¡¡¡¡OracleÊý¾Ýµ¼Èëµ¼³öimp/exp¾ÍÏàµ±Ó ......