mssql ´¥·¢Æ÷
ÎÒÕýÔÚ×öÒ»¸öÅÅÐаñ±í(T_hist)
±íÄÚÓÐ qid(Íâ¼ü) ÈÕÅÅÐаñ(dhits) ÖÜÅÅÐаñ(whits) ÔÂÅÅÐаñ(mhits) ×ÜÅÅÐаñ(hits) ¶¼ÊÇintÀàÐÍ
ÎÒÏÖÔÚÏë×ö¸ö´¥·¢Æ÷ ÿÈÕÁãµã°ÑËùÓÐÐеÄdhits×Ö¶ÎÇå¿Õ Ò²¾ÍÊÇ0 ÿÖÜÒ»°ÑwhitsÇå¿Õ ÿÔÂÒ»ºÅ°ÑmhitsÇå¿Õ
(±íÄÚÊý¾Ý²»±ä ¾ÍÊÇÔÚÌØ¶¨Ê±¼ä°ÑÈ«²¿ÐеÄÌØ¶¨×ֶθüÐÂΪ0¾ÍÊÇÁË¡£)
×ÜÅÅÐаñÒ»Ö±²»±ä
ÇëÎÊÈçºÎʵÏÖÄØ£¿
jobʵÏֱȽϺÃ
ʲô°æ±¾Êý¾Ý¿â£¿
½¨Òé2005´òÉÏSP3 Ч¹û²»´í
ÓÐûÓиüºÃµÄ°ì·¨ÄØ£¿£¿£¿ÎÒÎÞ·¨Á¬µ½
Ïà¹ØÎÊ´ð£º
ÓÐÒ»¸öÊý¾Ý¿âÀïÖ»ÓÐ2WÌõÊý¾Ý²»µ½£¬È´ÓÐ500MÄÇô´ó,Ôõô»ØÊ°¡£¿ÊÇACCESSµÄÊý¾Ý¿â¡£ºóÀ´ÎÒ°ÑACCESSµ¼Èëµ½MSSQLÖУ¬Ò²Õ¼ÓÃÁË500M×óÓҵĿռ䣬Èç¹ûѹËõÊý¾Ý¿âÄØ£¿Çë¸ßÊÖÖ¸µã
ѹËõÊý¾Ý¿â£¿ÄÜ×öµ½Ã´...
ÆÚ´ý¸ßÈËÖ¸µã ÎÒ ......
Ò»ÕÅ±í£¬×ֶηÖΪid,time1,time2,time3,time4,time5
ÇëÎÊÎÒÓ¦¸ÃÈçºÎÑ¡ÔñIDΪ1µÄÄÇÌõ¼Ç¼ÖÐtimeʱ¼ä×îСµÄֵĨ£¿
UP!
[code=SQL][/code]select min(t) from
(select time1 as t from t1 where id ......
ÈçÌ⣬MYSQLÓÖÔõô»ñÈ¡£¿
ÈçÌâ
Õâ¸ö¹À¼ÆÔÚÈÕÖ¾ÎļþÖвÅÄÜ¿´¼û°É
Õâ¸ö¹À¼ÆÔÚÈÕÖ¾ÎļþÖвÅÄÜ¿´¼û°É
ÒýÓÃ
³ý·ÇÄãÒµÎñÉÏ×ö¼Ç¼£¬·ñÔòÄãÊDz»ÄÜÖªµÀµÄ¡£ÒòΪÈÕÖ¾²»¼Ç¼selectÓï¾äÃüÁî¡£
..
ÄÇÓÐûÓÐϵͳ´ ......
ÎÒÔÚMSSQL¹ÜÀíÆ÷Àï°Ñн¨×Ö¶Îstr
ÔÚĬÈÏÖµ»ò°ó¶¨ÄÇÀïÎÒÌîдÁË0
È»ºóÎÒ·¢ÏÖ¡£Èç¹ûÎÒÔÚÔö¼Ó¼Ç¼ʱ¡£Õâ¸öSTR²¢²»ÊÇĬÈϵÄ0¶øÊÇNULLÔõô»ØÊ£¿£¨ÔÚÔö¼Ó×Ö¶Îʱ¡£ÎÒûÓмÈërs("str")µÄÖµ¡£Ô±¾Ò ......
ÏÖÏóÈçÏ£ºÖØÆôÒ»Êý¾Ý¿â·þÎñÆ÷£¨windows2003+MSSQL2000£©ºó£¬ÆäÖÐÒ»Êý¾Ý¿âÁ¬½Ó²»ÉÏ¡£´ËʱÆäËüÊý¾Ý¿âÔËÐÐÕý³£¡£ÎÒʹÓÃMSSQL2008Ô¶³ÌÁ¬ÉÏÊý¾Ý¿â£¬É¾³ý´ËÊý¾Ý¿âºó£¬Ê¹Óø½¼ÓÊý¾Ý¿âÖØÐÂÌí¼ÓÉÏЩÊý¾Ý¿âºó¾ÍÄÜÕý³£Ê¹Óá£´Ë ......