ÉÐѧÌÃoracle±Ê¼Ç
µÚÒ»¿Î£º¿Í»§¶Ë
1. Sql Plus(¿Í»§¶Ë£©£¬ÃüÁîÐÐÖ±½ÓÊäÈ룺sqlplus£¬È»ºó°´ÌáʾÊäÈëÓû§Ãû£¬ÃÜÂë¡£
2. ´Ó¿ªÊ¼³ÌÐòÔËÐÐ:sqlplus£¬ÊÇͼÐΰæµÄsqlplus.
3. http://localhost:5560/isqlplus
Toad£º¹ÜÀí£¬ PlSql Developer:
µÚ¶þ¿Î£º¸ü¸ÄÓû§
1. sqlplus sys/bjsxt as sysdba
2. alter user scott account unlock;(½âËø)
µÚÈý¿Î£ºtable structure
1. ÃèÊöijһÕÅ±í£ºdesc ±íÃû
2. select * from ±íÃû
µÚËĿΣºselect Óï¾ä£º
1.¼ÆËãÊý¾Ý¿ÉÒÔÓÃ¿Õ±í£º±ÈÈ磺.select 2*3 from dual
2.select ename,sal*12 annual_sal from emp;Óëselect ename,sal*12 "annual sal" from emp;Çø±ð£¬¼ÓË«ÒýºÅ±£³ÖÔ´óСд¡£²»¼ÓÈ«±ä´óд¡£
3. select ename || "abcd" Èç¹ûÁ¬½Ó×Ö·û´®Öк¬Óе¥ÒýºÅ£¬ÓÃÁ½¸öµ¥ÒýºÅ´úÌæÒ»¸öµ¥ÒýºÅ¡£
µÚÎå¿Î£ºdistinct
select deptno from emp;
select distinct deptno from emp;
select distinct deptno from emp;
select distinct deptno ,job from emp
È¥µôdeptno,jobÁ½Õß×éºÏµÄÖظ´¡£¸ü¶àµÄÏ¾ÍÊÇÕâô¶àÏîµÄ×éºÏµÄ²»Öظ´×éºÏ¡£
µÚÁù¿Î£ºWhere
select * from emp where deptno =10;
select * from emp where deptno <>10;²»µÈÓÚ10
select * from emp where ename ='bike'
Ïà¹ØÎĵµ£º
Oracle±í¿Õ¼äµÄ¹ÜÀí
1.´´½¨±í¿Õ¼ä
//´´½¨ÁÙʱ±í¿Õ¼ä
create temporary tablespace test_temp
tempfile 'E:\oracle\product\10.2.0\oradata\testserver\test_temp01.dbf'
size 32m
autoextend on
next 32m maxsize 2048m
extent management local;
&nbs ......
Ò»£®Ïà¹ØµÄ¸ÅÄî
RowidµÄ¸ÅÄrowidÊÇÒ»¸öαÁУ¬¼ÈÈ»ÊÇαÁУ¬ÄÇôÕâ¸öÁоͲ»ÊÇÓû§¶¨Ò壬¶øÊÇϵͳ×Ô¼º¸ø¼ÓÉϵġ£¶Ôÿ¸ö±í¶¼ÓÐÒ»¸örowidµÄαÁУ¬µ«ÊÇ
±íÖв¢²»ÎïÀí´æ´¢ROWIDÁеÄÖµ¡£²»¹ýÄã¿ÉÒÔÏñʹÓÃÆäËüÁÐÄÇÑùʹÓÃËü£¬µ«ÊDz»ÄÜɾ³ý¸ÄÁУ¬Ò²²»ÄܶԸÃÁеÄÖµ½øÐÐÐ޸ġ¢²åÈë¡£Ò»µ©Ò»ÐÐÊý¾Ý²åÈëÊý¾Ý¿â£¬Ôò
rowidÔÚ¸ÃÐ ......
½ñÌì°²×°Èí¼þÒ»Ö±ÔÚ²âÊÔÁ´½Ó²»ÄÜͨ¹ý£¬³öÏÖORA-12154: TNS: could not resolve service name£¬ºóÀ´²Å·¢ÏÖÊÇtnsnames.oraÖÐÓÐÎó¡£²éÕÒÍøÉϵÄ×ÊÁÏ£¬¼Ç¼ÏÂÀ´¡£
ÒªÅųý¿Í»§¶ËÓë·þÎñÆ÷¶ËµÄÁ¬½ÓÎÊÌ⣬Ê×Ïȼì²é¿Í»§¶ËÅäÖÃÊÇ·ñÕýÈ·(¿Í»§¶ËÅäÖñØÐëÓëÊý¾Ý¿â·þÎñÆ÷¶Ë¼àÌýÅäÖÃÒ»ÖÂ)£¬ÔÙ¸ù¾Ý´íÎóÌáʾ½â¾ö¡£ÏÂÃæÁгö¼¸ÖÖ³£¼ûµÄÁ¬½ÓÎÊÌâ ......
²ÎÊý
UNDO_MANAGEMENT = AUTO --¹ÜÀíģʽ,¿ÉΪAUTO»òMANUAL.Ö»ÄÜÔÚÆôʼ²ÎÊýÎļþÀïÃæÐÞ¸Ä
UNDO_TABLESPACE = undo --Öƶ¨´æ´¢»¹ÔÊý¾ÝµÄ±í¿Õ¼ä,Òà¿ÉÓÃALTER SYSTEM SET undo_tablespace = 'abc'À´¸ ......
ÔÚ´ó¶àÊýʱºòÎÒÃÇÔÚÉè¼Æ³ÌÐòµÄʱºò¶¼×ñÑÏÂÃæµÄ²½Ö裺
1¡¢´ò¿ªÓαê
2¡¢¿ªÊ¼Ñ»·
3¡¢´ÓÓαêÖÐÈ¡Öµ
ÄÇÒ»Ðб»·µ»Ø
5¡¢´¦Àí
6¡¢¹Ø±ÕÑ»·
7¡¢¹Ø±ÕÓαê
¿ÉÒÔ¼òµ¥µÄ°ÑÕâÒ»Àà´úÂë³ÆΪÓαêÓÃÓÚÑ»·¡£µ«»¹ÓÐÒ»ÖÖÑ»·ÓëÕâÖÖÀàÐͲ»Ïàͬ£¬Õâ¾ÍÊÇFORÑ»·£¬ÓÃÓÚFORÑ»·µÄÓα갴ÕÕÕý³£µÄÉùÃ÷·½Ê½ÉùÃ÷£¬ËüµÄÓŵ ......