OracleÈÕ³£Î¬»¤µãµÎ
OracleάÈÕ³£»¤µãµÎ
ËäÈ»Oracleά»¤²»ÊÇÎÒµÄÖ°Ô𣬵«Æ½Ê±»¹ÊÇÄÑÃâÒª¸úËü´ò½»µÀ£¬Òò´Ë¶ÔÓÚOracleµÄÈÕ³£Î¬»¤ÂÔÖªÒ»¶þ»¹ÊǺÜÓкô¦µÄ¡£
1. µÇ¼£º
£¨1£©²ÉÓÃϵͳ¹ÜÀíÔ±Óû§µÇ¼£º
#su - oracle
$ sqlplus / as sysdba
£¨2£©²ÉÓÃÒ»°ãÓû§µÇ¼£¬¼ÙÉèÓû§ÃûΪoracle£¬ÃÜÂëΪpassword¡£
#sqlplus oracle/password@ssp
2. ²é¿´±í½á¹¹£¬Èç²é¿´ÏµÍ³±ídba_usersµÄ½á¹¹¡£
SQL> desc dba_users;
Name Null? Type
----------------------------------------- -------- ----------------------------
USERNAME NOT NULL VARCHAR2(30)
USER_ID NOT NULL NUMBER
PASSWORD VARCHAR2(30)
ACCOUNT_STATUS NOT NULL VARCHAR2(32)
LOCK_DATE DATE
EXPIRY_DATE&
Ïà¹ØÎĵµ£º
oracle±í¿Õ¼ä²Ù×÷Ïê½â
1
2
3×÷Õߣº À´Ô´£º ¸üÐÂÈÕÆÚ£º2006-01-04
5
6
7½¨Á¢±í¿Õ¼ä
8
9CREATE TABLESPACE data01
10DATAFILE '/ora ......
When queried, virtual columns appear to be normal table columns, but
their values are derived rather than being stored on disc. The syntax
for defining a virtual column is listed below.
column_name [datatype] [GENERATED ALWAYS] AS (expression) [VIRTUAL]
If the datatype is omitted, it is determin ......
(1)SEQNAME.NEXTVALÀïÃæµÄÖµÈçºÎ¶Á³öÀ´£¿¿ÉÒÔÖ±½ÓÔÚinsert into test values(SEQNAME.NEXTVAL) ÊÇ¿ÉÒÔÓà ÕâÑù£º
SELECT tmp#_seq.NEXTVAL
INTO id_temp
from DUAL; È»ºó¿ÉÒ ......
ÉÏ節學習開µÚÒ»個Form£¬這個節ÔÚÌí¼ÓÒ»個彈³öÏÂÀ¿ò
µÚÒ»²½£ºÌí¼Ó記錄組
1.1 選ÖÐRecord Groups
1.2 單擊Create
1.3 輸Èë²é詢SQL
1.4 單擊OK
1.5 ÐÞ¸Ä ......
CSDNÀïµÄÒ»¸öÅóÓÑÎʵ½ÁËÕâ¸öË÷Òý¸²¸ÇµÄ¸ÅÄî¡£ Õâ¸ö¸ÅÄîºÜСµÄ֪ʶµã£¬ÔÚÎÒµÄÂÛ̳ÀïÓнâÊÍ“”£¬²»¹ý×÷ΪOracle°æÖ÷£¬²»ÄÜÔÚ»ØÌûÀï¼ÓÉÏÍøÍâµÄµØÖ·Á´½Ó£¬ËùÒÔÕâÀïÔÚCSDNÀïÌûÉÏÒ»·Ý
±ÈÈçÓи´ºÏË÷ÒýΪ3¸ö×ֶΣºf1 + f2 + f3,ÇëÎÊ:
1: select f1, f2, f3, f4 from table where f1 = 'XX' and f2 = 'XX'. ......