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

sql¸ß¼¶²éѯ - Web ¿ª·¢ / ASP

Ï뼸¾ä´úÂë¸ã¶¨ÏÂÃæµÄ²éѯ

Êý¾Ý¿âÓÐÒ»×Ö¶Î,Êý×ÖÇÒ²»ÄÜÏàͬ

µ±²åÈëֵΪ1000µÄʱºò,²éѯÊý¾Ý¿â,ÓÐÎÞ1000,û,¾Í²åÈë1000,ÓоͲéѯÊÇ·ñÓÐ1000.1,ÈçÎ޾ͲåÈë1000.1,ÈçÓÐ1000.1¾Í²åÈë1000.2,ÒÀ´ÎÀàÍÆ(˵°×Á˾ÍÊÇ,ÓÐÏàͬµÄ¾Í¼Ó0.1,ÇÒ²»ÄÜÖØ¸´)


ÏȲéѯ ´óÓÚµÈÓÚ10000µÄÒ»Ìõ È»ºó+0.1¾Í¿ÉÒÔÁË ÔÚ¸üÐÂ

¹Ø¼üÊDz»ÄÜÖØ¸´


Êý¾Ý¿âÄÚ¿ÉÄÜÒѾ­ÓÐÁË1000.1ÕâÌõ¼Ç¼

sql="SELECT MAX([×Ö¶Î]) from ±í WHERE [×Ö¶Î]>=1000"
set rs=conn.execute(sql)
if rs.EOF then
  дÈë1000µÄÊý¾Ý
else
  a=cdbl(rs(0))+0.1
  дÈëÊý¾Ýa
end if

ÒýÓÃ
¹Ø¼üÊDz»ÄÜÖØ¸´


Êý¾Ý¿âÄÚ¿ÉÄÜÒѾ­ÓÐÁË1000.1ÕâÌõ¼Ç¼

=======================
Êý¾Ý¿âÀïµÄÖµ 10000 10000.1 10000.2 10000.3 

µ±Ç°²åÈëÊýÖµ10001
ÏȲéѯ µÈÓÚ »ò ´óÓÚ10000µÄÒ»Ìõ ²é³ö10000.3
È»ºó+0.1 ¾ÍÊÇ 10000.4






¶î.. Ó¦¸ÃÊÇÏȲéѯ´óÓÚµÄÒ»Ìõ Èç¹ûûÓÐ Ôھ͵ÈÓÚµÄ Èç¹ûûÓоÍÖ±½Ó²åÈë
 
È»ºóÔÚ¼Ó0.1


ÓÃÍò¶ñµÄµÝ¹é°É

ÒýÓÃ
sql="SELECT MAX([×Ö¶Î]) from ±í WHERE [×Ö¶Î]>=1000"
set rs=conn.execute(sql)
if rs.EOF then
дÈë1000µÄÊý¾Ý
else
a=cdbl(rs(0))+0.1
дÈëÊý¾Ýa
end if


Èç¹ûÊý¾Ý¿âÀïÓÐÒ»Ìõ1000000000000µÄ×î´ó¼Ç¼,ÄÇôִÐÐÏÂÀ´¾ÍÒª²åÈë1000000000000.1ÁË...

Ö»Ïë²åÈëÒ»Ìõ×î½üµÄ¼Ç¼,Çв»ÖØ


Ïà¹ØÎÊ´ð£º

sqlÓï¾ä¶à±í¶à×ֶβéѯ - MS-SQL Server / »ù´¡Àà

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£ ......

sqlССµÄÒÉÎÊ - .NET¼¼Êõ / C#

¿ÉÄÜÒòΪ¹¤×÷µÄÔ­Òò ½Ó´¥Êý¾Ý¿âÕâ¿é±È½ÏÉÙ£¬Ö®Ç°¶¼ÊÇ×ö³ÌÐòÕâ¿é£¬Êý¾Ý¿âÕâ¿é¶¼ÓÐרÃŵÄÈËÀ´×ö ·Ö¹¤¶¼ºÜÃ÷ϸ ËùÒÔ¶ÔÊý¾Ý¿âÕâÒ»¿éÍêÈ«²»Á˽⡣ǰ¶Îʱ¼ä È¥ÃæÊÔÁ˼¸¼Ò¹«Ë¾ ¼¸ºõ¶¼ÊÇÔÚÊý¾Ý¿âÕâ¿é¹ÒµôµÄ Á¬¸ö¼òµ¥µÄSQ ......

Êý¾ÝÒÔxml¸ñʽ·µ»Ø - MS-SQL Server / Ó¦ÓÃʵÀý

´ÓÊý¾Ý¿âÖвéѯһÕűíµÄÊý¾Ý
select ²¿ÃÅ,ÐÕÃû from tb
ÈçºÎ²ÅÄÜÉú³ÉÏÂÃæµÄxml¸ñʽ
XML code:
<folder state="unchecked" label="È«²¿">
¡¡¡¡ <folder state="unchecked&qu ......

ÇóÒ»sqlÓï¾ä - MS-SQL Server / ÒÉÄÑÎÊÌâ

ÏÖÔÚÓÐÁ½ÕÅ±í£ºÎÄÕÂÖ÷±íA(articleId,articleTitle)£¬ÎÄÕÂÆÀÂÛ±íB(commentId,articleId,commentTitle)
ÏÖÔÚÎÒÏëʵÏÖÕâÑùµÄ¹¦ÄÜ£ºÁгöÎÄÕÂÁÐ±í£¬ÆäÖÐÿƪÎÄÕ±êÌâÏÂÃæÁгö´ËÎÄÕµÄǰ2¸öÎÄÕÂÆÀÂÛ£¬ÇëÎÊsqlÓï¾äÔõôд°¡ ......

sql ²éѯ - MS-SQL Server / »ù´¡Àà

ÓÐTABLEA ×Ö¶ÎΪ ²É¹ºµ¥ºÅ¡¢Ðкš¢ÎïÁϱàÂë¡¢Èë¿âÈÕÆÚ  
ÏÖÏë°´ÕÕÎïÁϱàÂë²éѯ×î´óÈë¿âÈÕÆÚ
Óï¾äÈçÏ£º
SELECT ²É¹ºµ¥ºÅ¡¢Ðкš¢ÎïÁϱàÂë¡¢Èë¿âÈÕÆÚ from TABLEA A WHERE Èë¿âÈÕÆÚ=(SELECT MAX(Èë¿âÈÕÆÚ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ