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

ORACLE²éѯ»òɾ³ýʱָ¶¨Ê¹ÓÃË÷ÒýµÄд·¨­

 ²éѯʱ¿ÉÒÔÖ¸¶¨Ê¹ÓÃË÷ÒýµÄд·¨¡£­
­
SELECT   /*+ index(TB_ALIAS IX_G_COST3) */­
  TB_ALIAS.*­
  from g_Cost TB_ALIAS­
WHERE Item_Two = 0­
   AND Flight_Date >= To_Date('20061201', 'YYYYMMDD')­
   AND Flight_Date <= To_Date('20061231', 'YYYYMMDD');­
­
ɾ³ýʱҲ¿ÉÒÔÖ¸¶¨Ê¹ÓÃË÷ÒýµÄд·¨¡£­
­
DELETE   /*+ index(TB_ALIAS IX_G_COST1) */­
  from g_Cost TB_ALIAS­
WHERE ITEM_NAME = 'Сʱ·Ñ';­
­
IX_G_COST1£¬IX_G_COST3¶¼ÊDZíG_COSTµÄË÷Òý¡£


Ïà¹ØÎĵµ£º

jdbcÁ¬½ÓOracle

      ËäȻѧϰJavaºÜ¾ÃÁË£¬×Ô¼ºÒ²Á¬½Ó¹ýһЩÊý¾Ý¿â£¬±ÈÈçmysqlÖ®ÀàµÄ£¬Èç½ñÄØ£¬Ò²Ñ§Ï°ÁËÒ»¶Îʱ¼äµÄOracle£¬È»¶øÄØ£¬½ñÌìÊÇÎÒµÚÒ»´ÎÁ¬½ÓOracle£¬ºÙºÙ£¬Ó¦¸Ã»¹²»ËãÌ«³Ù°É¡£
    ½ñÌìÄØ£¬Óе㱿׾£¬´ó¼ÒĪЦ£¡
    ÎÒÕâÊÇÒ»¸ö²éѯÀý×Ó
    Ê×ÏÈ£¬Ô ......

Oracle¸ß¼¶¸´ÖÆ

 ÔÚ¿ªÊ¼Ö®Ç°£¬ÐèÒª¼òµ¥ËµÃ÷һϣ¬Ä¿Ç°¹«Ë¾Óм¸¸öÏîÄ¿¶¼²ÉÓÃOracle×÷ΪÊý¾Ý¿âƽ̨£¬²¢ÇÒÓеÄÏîĿʹÓõ½ÁËOracleµÄÊý¾Ý¿â¸´ÖƼ¼Êõ£¬ÆäÖÐÒ²Óöµ½ÁËһЩÎÊÌ⣬Òò´ËÔÚÕâÀÎÒ¶ÔOracleµÄ¸´ÖƼ¼Êõ̸һÏÂÎÒ¸öÈ˵ÄÀí½â£¬Ï£ÍûÄܹ»¶Ô²ÉÓÃOracleÊý¾Ý¿âµÄÏîÄ¿×éÓÐËù°ïÖú¡£ÆäÖÐÔÚÎÄÖÐʹÓõ½µÄSQL½Å±¾¶¼ÊǾ­¹ý¼ìÑé¿ÉÒÔÔËÐеġ£
¡¡¡¡Ê ......

C#±¸·ÝOracle´úÂë

ÏîÄ¿¿ª·¢ÖУ¬ÐèÒªÔ¶³Ì±¸·ÝÊý¾Ý¿â£¬ÒÔÏÂΪC#Ô¶³Ì±¸·ÝÊý¾Ý¿âµÄ´úÂë
 /// <summary>
/// Êý¾Ý¿â±¸·Ý
/// </summary>
/// <param name="fileName">dmpÎļþÃû³Æ</param>
/// <param name="logFileName">logÎļþÃû³Æ</param>
/// <re ......

oracle»ù´¡ÈëÃŽ̲Ä

 
½¨±í
create table <table_name>(
column_name1 column_type [not null] [check (expression)]
    [default value] [primary key][references <table_name>(column_name)],
column_name2 column_type [not null] [check (expression)]
    [default value] [prima ......

ORACLE²éѯ³ö±íÖеÄ×Ö¶ÎÁбí

 SELECT max(SYS_CONNECT_BY_PATH(COLUMN_NAME, ','))
  from (SELECT A.COLUMN_NAME, ROWNUM AS ROWNO
          from USER_TAB_COLUMNS A
         WHERE TABLE_NAME = 'A_USER'
     ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ