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

MySqlÖÐtop²éѯÎÊÌâ

ÎÒµÄsqlÓï¾äÊÇ£ºselect top 10 * from tabA order by info_id;È»ºó¾Í
ERROR 1064(42000):You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '10 * from tabA order by info_id' at line 1

¸Õ¸Õ½Ó´¥MySql£¬Ó¢ÓïÒ²²»ºÃ£¬Ï£Íû¸÷λ¸ßÊÖÖ¸µã¹þ£¬µ½µ×ÊÇÄÄÀï³ö´íÄØ£¿
select * from tabA order by info_id limit 10
mysql²»Ö§³ÖTOP

¿ÉÒÔÔÙ½ÌÎÒÔõô½µÐòô£¿

ÒýÓÃ
¿ÉÒÔÔÙ½ÌÎÒÔõô½µÐòô£¿


SQL code:
--½µÐò
select * from tabA order by info_id desc limit 10;



Ïà¹ØÎÊ´ð£º

MYSQL°²×°Ê§°Ü

ÎÒÒÔǰ°²×°ÁËÒ»´Î£¬ºóÀ´Ð¶ÔØÁË£¬ÏÖÔÚÔÙ°²×°µÄʱºò£¬Ìáʾ´íÎó£ºError 1305.Error reading from file C:DOCUME~1\LOCALS~1\Temp\mysql_server.msi.Verify that the file exists and that you can access it. 
¿ ......

mysqlÓï¾äÓÅ»¯ÎÊÌâ ´ó¼Ò¸øÓÅ»¯¸öSQLÓï¾ä

SELECT a.tguildname ,SUM(a.ct) +  if (SUM(b.ct) IS NULL ,0,SUM(b.ct)) from (
SELECT  tg.tguildname,c.cid, (
cf.fbb + cf.fgjbb + cf.fjybb + cf.fqb + cf.fgjqb + cf.fjyqb + cf.fqib + cf. ......

mysql ¼òµ¥ÎÊÌâ

¼ÙÈçÊý¾Ý¿âÖÐÓиötest±í£¬±íÖÐÓÐid£¬Name£¬num£¬¼Ç¼ʱ¼ä
idΪ×ÔÔö³¤Ö÷¼ü£¬nameÊÇÃû×Ö£¬num±íʾÆäÊýÁ¿

1  nike  100        ϵͳʱ¼ä
2  nike  300  &n ......

MysqlÁ¬½Óoracle

ÐèÒªÔÚMySQLÀïÃæÐ´¸ö´¢´æ¹ý³Ì,
·ÃÎÊoracleµÄÊý¾Ý.
Ŀǰ²»ÄÜ

oracle¿ÉÒԾͿÉÒÔÁ¬½Ómysql£¬Í¨¹ýodbc+dblinkÀ´Á¬½Ó

ûÓа취¡£Ä¿Ç°µÄMYSQLµÄ°æ±¾ÖÐÉв»Ö§³ÖÁ¬½Óµ½ÆäËüÊý¾Ý¿â£¬

ÕæÍ¦ÓÐÏë·¨µÄ ĿǰÎÒû×ö¹ý ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ