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

ÇósqlÓï¾ä£¨mysql£©

RX
Çó(ÔÚij¸ötimeÀjs_id³öÏÖ×î¶àµÄ)
±ÈÈçtimes=1026,js_id=11(±íÃûÊÇtopclick)

js_id  times
  11    1026
  12    1026
  11    1026
  11    1026
  13    1025
SQL code:
select js_id,count(*) as total
from topclick
where times='1026'
group by js_id
order by total desc limit 1;


ÒýÓÃ
SQL codeselect js_id,count(*)as totalfrom topclickwhere times='1026'groupby js_idorderby totaldesc limit1;

Äã̫˧ÁË£¬¸çÃÇ~

select times,js_id,count(js_id) as num from topclick group by times,js_id
´ÓÕâÀï±ßÕÒ³öÄãÏëÒªµÄËæ±ãÄĸöjs_id ×î¶àµÄ¾ÍÐÐ

Õý½â¡£

ÒýÓÃ
SQL codeselect js_id,count(*)as totalfrom topclickwhere times='1026'groupby js_idorderby totaldesc limit1;


ÒòΪ²éѯ³öÀ´ÓкܶàÏàͬµÄ"js_id,times"¼Ç¼£¬Ã¿¸öjs_id¶¼¶ÔÓ¦¶à¸öÏàͬµÄtimes¡£
ÏÂÃæÐ´·¨ÓиüºÃµØ¿É¶ÁÐÔ£º
select js_id,count(times) as total
from topclick
where times='1026'
group by js_id
order by total desc limit 1;


ÒýÓÃ
ÒòΪ²éѯ³öÀ´ÓкܶàÏàͬµÄ"js_id,times"¼Ç¼£¬Ã¿¸öjs_id¶


Ïà¹ØÎÊ´ð£º

ÇóÒ»SQL - MS-SQL Server / »ù´¡Àà

±íÈçÏÂ
½ÌÊÒID ×ùλÊý ¿ªÊ¼Ê±¼ä ½áÊøÊ±¼ä 2009Äê1ÔÂ1ÈÕ 2009Äê1ÔÂ2ÈÕ 2009Äê1ÔÂ3ÈÕ
  101 50 08£º00 08£º30 30 40 50  
  101 50 09£º00 ......

mysqlµÄÇý¶¯³ÌÐò

ÎÒÓÐÒ»¸öjava»·¾³ÏµijÌÐò£¬ÔÚ±¾»úÔËÐÐÕý³££¬µ«·¢²¼µ½ÍøµÄÐéÄâÖ÷»úʱ²»ÄÜÁ¬½ÓÊý¾Ý¿âÁ¬½Ó³Ø
jdk 1.6 tomcat6.0.18 mysql5 mysqljdbc5.1.5
ÐéÄâÖ÷»úµÄ¼¼ÊõÈËԱ˵£¬Ö»ÄÜÅäÖþÖÓòµÄÊý¾Ý¿âÁ¬½Ó³Ø£¬Ò²¾ÍÊÇÔÚM ......

MYSQL ÈçºÎÐÞ¸ÄBLOBÀàÐ͵ÄÊý¾Ý?

ÈçÌâ Êý¾ÝÊÇBLOBÀàÐÍ Ôõô²ÅÄÜÐÞ¸ÄÆäÖеÄijЩֵ
BLOBÖдæÈëµÄÊÇʲôÄÚÈÝ£¿

¼ÙÉè×Ö¶ÎmemoΪblobÀàÐÍ£¬ÔÚ¸Ã×ֶεÄÖµÇ°ÃæÔö¼Ó×Ö·û´®'add--'
Ôò²Ù×÷Óï¾äÈçÏ£º
SQL code:
update tb_blog set memo=concat( ......

MYSQLÓëSmartyµÄÓ¦ÓÃ

ÔÚÈýÊ®½²Óöµ½ÕâÑùÒ»¸öÎÊÌâ¾ÍÊÇÔËÐдúÂëʱ³öÏÖ´íÎó Fatal error: Call to undefined method mysql::fetch_array() in D:\WWW\news\index.php on line 12
£¬ÎÒ°Ñmysql::fetch_array() ¸Ä³Émysql::fetch_row() ÓÖ³öÏÖF ......

´ÓORACLEµ½DB2µÄSQLÓï¾äÎÊÌâ

ÏÖÔÚÓÐÒ»ORACLEÖеÄSQLÓï¾ä£¬ÐèÒªÒÆÖ²µ½DB2ÖУ¬ÇëÎʸÃSQL¸ÄÈçºÎд
ORACLEÖУº
select floor(months_between(date1,date2)) from A  
date1,date2·Ö±ðΪ±íÖеÄÁ½¸ö×Ö¶Î £¬¶¼ÎªÈÕÆÚÐÍ 
DB2ÖÐÈçºÎʹÓÃÐ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ