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job_queue_processes = 1
job_queue_interval = 60
distributed_transactions = 10
open_links = 4
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ÎﻯÊÓͼ (MV) — Ò²³ÆÎª¿ìÕÕ — Ò»¶Îʱ¼äÀ´ÒѾ­¹ã·ºÊ¹Óá£MV ÔÚÒ»¸ö¶ÎÖд洢²éѯ½á¹û£¬²¢ÇÒÄܹ»ÔÚÌá½»²éѯʱ½«½á¹û·µ»Ø¸øÓû§£¬´Ó¶ø²»ÔÙÐèÒªÖØÐÂÖ´Ðвéѯ — ÔÚ²éѯҪִÐм¸´Îʱ£¨ÕâÔÚÊý¾Ý²Ö¿â»·¾³Öзdz£³£¼û£©£¬ÕâÊÇÒ»¸öºÜ´óµÄºÃ´¦¡£ÎﻯÊÓͼ¿ÉÒÔÀûÓÃÒ»¸ö¿ìËÙˢлúÖÆ´Ó»ù´¡±íÖÐÈ«²¿»òÔöÁ¿Ë¢Ð¡£
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create materialized view mv_hotel_resv
refresh fast
enable query rewrite
as
select distinct city, resv_id, cust_name
from hotels h, reservations r
where r.hotel_id = h.hotel_id';
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oracleÈÕÆÚº¯Êý£¬
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¡¡¡¡Day:
¡¡¡¡dd number 12
¡¡¡¡dy abbreviated fri
¡¡¡¡day spelled out friday
¡¡¡¡ddspth spelled out, ordinal twelfth
¡¡¡¡Month:
¡¡¡¡mm number 03
¡¡¡¡mon abbreviated mar
¡¡¡¡month spelled out march
¡¡¡¡Year:
¡¡¡¡yy two digits 98
¡¡¡¡yyyy four digits 1998
¡¡¡¡
¡¡¡¡24Сʱ¸ñʽÏÂʱ¼ä·¶Î§Îª£º 0:00:00 - 23:59:59....
¡¡¡¡12Сʱ¸ñʽÏÂʱ¼ä·¶Î§Îª£º 1:00:00 - 12:59:59 ....
oracleÈÕÆÚº¯ÊýÓ÷¨£º
¡¡¡¡1.
¡¡¡¡ÈÕÆÚºÍ×Ö·ûת»»º¯ÊýÓ÷¨£¨to_date,to_char£©
¡¡¡¡
¡¡¡¡2.
¡¡¡¡select to_char( to_date(222,'J'),'Jsp') from dual
¡¡¡¡
¡¡¡¡ÏÔʾTwo Hundred Twenty-Two
¡¡¡¡
¡¡¡¡3.
¡¡¡¡ÇóijÌìÊÇÐÇÆÚ¼¸
¡¡¡¡select to_char(to_date('2002-08-26','yyyy-mm-dd'),'day') from dual;
¡¡¡¡ÐÇÆÚÒ»
¡¡¡¡select to_char(to_date('2002-08-26','yyyy-mm-dd'),'day','NLS_DATE_LANGUAGE = American') from dual;
¡¡¡¡monday
¡¡¡¡ÉèÖÃÈÕÆÚÓïÑÔ
¡¡¡¡ALTER SESSION SET NLS_DATE_LANGUAGE='AMERICAN';
¡¡¡¡Ò²¿ÉÒÔÕâÑù
¡¡¡¡TO_DATE ('2002-08-26' ......

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toad¶Ô¿ª·¢ÕßʹÓúܶ࣬°ïÖúºÜ´ó£¬
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2)Ñ¡ÔñÒªµ¼³öµÄÐÐ
3£©ÓÒ¼ü£¬Ñ¡Ôñ“save as”¡¾×¢ÒâÕâ¶ù²»ÊÇexport¡¿
4£©ÀàÐÍÑ¡Ôñ”excel file“
5£©¸´Ñ¡“write wide strings”£¬·ñÔòÓпÉÄÜ»á³öÏÖÖÐÎÄÂÒÂë
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SID_LIST_LISTENER =
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      (ORACLE_HOME = G:\oracle\product\10.2.0\db_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = G:\oracle\product\10.2.0\db_1)
      (SID_NAME = orcl)
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