sqlÓï¾äÎÊÌâ - MS-SQL Server / ÒÉÄÑÎÊÌâ
ÏÖÔÚÓÐÒ»¸ö²¿Ãűídept£¨²¿ÃÅÃû³Æ£¬²¿Ãźš£¡££©ÓÐÒ»¸öÈËÔ±±íemp£¨ÐÕÃû£¬ÈËÔ±±àºÅ£¬Ö°Î»£¬Ð½×Ê£¬²¿ÃÅ£© emp±íÖеÄÄÚÈÝÊÇÕâÑùµÄ£º a 1 ¹¤³Ìʦ 3000 Èí¼þ²¿ b 2 ÆÕͨԱ¹¤ 2000 Ó²¼þ²¿ c 3 ¹¤³Ìʦ 4000 Ó²¼þ²¿ d 4 ÆäËû 1500 °ì¹«ÊÒ Ð½×ÊÔö³¤¸ù¾ÝְλÀ´Ôö£¨¹¤³Ìʦн×ÊÔö³¤ÔÀ´µÄ1.2±¶£¬ÆÕͨԱ¹¤Ôö³¤ÎªÔÀ´µÄ1.1±¶£¬ÆäËûµÄÔö³¤ÎªÔÀ´µÄ1.05±¶£© ÎÒÒª²é³ö¼ÓнǰºÍ¼ÓнºóµÄÈ˵ÄÐÅÏ¢£¨ÓÃsqlÓï¾ä±íʾ³öÀ´£¬ÎÒ¸ÃÔõÃ´Ð´ÄØ£¬Çë½Ì¸ßÊÖÁË£¬Ð»Ð»£¡£©
SQL code: select ÐÕÃû, ÈËÔ±±àºÅ, ְλ, н×Ê=(case when ְλ='¹¤³Ìʦ' then н×Ê*1.2 when ְλ='ÆÕͨԱ¹¤' then н×Ê*1.05 else н×Ê end), н×Ê as [н×Ê(µ÷Õûǰ)] from emp SQL code: select t.* , case ְλ when '¹¤³Ìʦ' then н×Ê * 1.2 when 'ÆÕͨԱ¹¤' н×Ê * 1.1 else н×Ê * 1.05 end ¼Óнºó from emp t Ç¿°¡£¬¶¼ÄÜ¿´¶®ÒýÓà SQL code select ÐÕÃû, ÈËÔ±±àºÅ, ְλ, н×Ê=(case when ְλ='¹¤³Ìʦ' then н×Ê*1.2 when ְλ='ÆÕͨԱ¹¤' then н×Ê*1.05 else н×Ê end), н×Ê as [н×Ê(µ÷Õûǰ)] from emp SQL code Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighl
Ïà¹ØÎÊ´ð£º
Ö´ÐеÄ˳Ðò£º 1£©Îļþä¯ÀÀ¿ò£¨Ñ¡ÔñÎļþʹÓã© Ñ¡ÔñºÃÎļþºó µã»÷Ò»¸öµ¼Èë°´Å¥µÄʱºò £¬°ÑÉÏÃæÉÏ´«¿òÀïµÄcsvÎļþÒÔÒ»¸öIDΪÎļþÃû£¬ÉÏ´«µ½**/**Îļþ¼ÐÏ 2£©¶ÁÈ¡Õâ¸öÎļþ¼ÐϵÄcsvµÄÎļþ£¬×ª»»³Ésql 3 ......
ÎÒÓжà¸ö±íA B C ½á¹¹ÊÇÒ»ÑùµÄ£¬¶¼ÓÐ2¸ö×Ö¶ÎnameºÍcontent,ÎÒÒªËÑË÷ËùÒÔ±íËùÓÐ×Ö¶ÎÖаüº¬¡°Öйú¡±µÄÄÚÈÝ Õâ¸öSQLÓï¾äÔõôд ÈçºÎ½«¶à¸ö±íµÄ²éѯ½á¹ûÁ¬³ÉÒ»¸ö±í Õâ¸öSQLÓï¾äÔõôд ±íµÄ½á¹¹ÊÇÒ»ÑùµÄ ÀýÈç£ ......
ÎÒÓÐÒ»¸ö±í£¬½á¹¹ÊÇÕâÑù¡£ ת³ö µ¥Î» תÈ뵥λ ±ÊÊý ½ð¶î date(Ö÷) outid(Ö÷) inid(Ö÷) num amt 2009 1 2 1 500 Ϊ 1 µ¥Î» ÔÚ2009Ä ......
ÎÒÏë²éѯ³öÿÌìÊý¾ÝµÄ×î´óµÄÒ»¸öÖµ¡£±íµÄ¸ñʽÈçÏ ±íÃû: hisdata ×Ö¶Î ±àºÅ Öµ ״̬ ʱ¼ä Id value state dattime 101 32.3 0 ......
Çó¸övbÖеÄsqlÓï¾äµÄд·¨£¬´ÎsqlÓï¾äµÄÓ÷¨ÊÇ·ÖÒ³³ÌÐò ÎÒдµÄÈçÏ£ºÆäÖÐAÊÇÓÃÀ´½ÓÊÕÿҳÏÔʾµÄ¼Ç¼µÄÌõÊý£¬BÊÇÓÃÀ´½ÓÊÕÏÔʾµÄµ±Ç°µÄÒ³Ãæ. sqltext="select top A * from log where id not in(select top ( ......