数据：
userid sid sexgo 2145796903 sexgo 2145802359 sexgo 2145794277 sexgo 2145802357 sexgo 2145815136 sexgo 2145810994 uuwap 2145874581 uuwap 2145872602 uuwap 2145847304 uuwap 2145800783 uuwap 2145797838
需要获取的数据是每一个userid就一个sid，像上面的数据就只有2条是想要的，sql语句如下：
sqlserver中的sql语句：
select * from unionsite a where not exists (select 1 from unionsite where a.userid = userid and a.sid > sid) and (userid='uuwap' or userid='sexgo')
mysql中的sql语句：
select *,count(distinct userid) from unionsite group by userid
最后执行sql语句后的数据为：
2145794277 sexgo
2145797838 uuwap
数据：
sid 数据(validtotal) 类型(searchType)
435466064 17100 c 2145900222 25699 c 2145900226 18505698 c 2145908186 798 c 2145909778 170 c 2145909800 4071 c 2145904011 2967164 p 2145874581 23 p 2145836931 13064841 p 2145800783 593122 p 2145900226 582085 p 2145907505 583524 p 2145847304 142 p 2145847304 0 e 2145907505 0 e 2145874581 0 e 2145900226 0 e 2145800783 0 e 2145836931 0 e 2145904011 0 e 2145874581 0 t 2145900226 45905 t 2145909800 6920 t 2145800783 42692 t 2145847304 7 t 2145797748 5750 t 2145805071 9534 t 435466064 17100 c 2145900222 25699 c 2145900226 18505698 c 2145908186 798 c 2145909778 170 c 2145909800 4071 c
需要获取的是把同一个sid而不同的类型整合成一行，sql语句如下：
mysql和sqlserver都可以：
select statDate,a.sid,searchValue,themeValue, clientValue,adValue,searchPrice,themePrice,clientPrice,adPrice,userid as username,u.domainAddr from ( Select sid,statDate, case when searchtype='p' then validTotal else 0 end as searchValue, case when searchtype='t' then validTotal else 0 end as themeValue, case when searchtype='c' then validTotal else 0 end as clientValue, case when searchtype='a' then validTotal else 0 end as adValue, case when searchtype='p' then price else 0 end as searchPrice, case when searchtype='t' then price else 0 end as themePrice, case when searchtype='c' then price else 0 end as clientPrice, case when searchtype='a' then price else 0 end as adPrice from unionsitemonthreportdetail where statdate='2008-08' ) as a , unionsite u where a.sid=u.sid order by searchValue+themeValue+clientValue+adValue DESC
最后的数据：
2008-11 2145900226 0 0 18505698 0 0.00 0.00 1.50 0.00 moabcyicha wap.moabc.com 2008-11 2145900226 0 0 18505698 0 0.00 0.00 1.50 0.00 moabcyicha wap.moabc.com 2008-11 2145836931 13064841 0 0 0 1.30 0.00 0.00 0.00 andjiang wap.ucfly.com 2008-11 2145904011 2967164 0 0 0 1.30 0.00 0.00 0.00 mmbcn wap.mmb.cn 2008-11 2145800783 593122 0 0 0 1.20 0.00 0.00 0.00 uuwap wapwz.cn 2008-11 2145907505 583524 0 0 0 1.30 0.00 0.00 0.00 yichaishd yicha.cn 2008-11 2145900226 582085 0 0 0 1.20 0.00 0.00 0.00 moabcyicha wap.moabc.com 2008-11 2145900226 0 45905 0 0 0.00 NULL 0.00 0.00 moabcyicha wap.moabc.com 2008-11 2145800783 0 42692 0 0 0.00 NULL 0.00 0.00 uuwap wapwz.cn 2008-11 2145900222 0 0 25699 0 0.00 0.00 0.50 0.00 moabcyicha moabc.com 2008-11 2145900222 0 0 25699 0 0.00 0.00 0.50 0.00 moabcyicha moabc.com 2008-11 435466064 0 0 17100 0 0.00 0.00 0.00 0.00 user84573 wap.wapsai.com 2008-11 435466064 0 0 17100 0 0.00 0.00 0.00 0.00 user84573 wap.wapsai.com 2008-11 2145805071 0 9534 0 0 0.00 NULL 0.00 0.00 181860 181860.com 2008-11 2145909800 0 6920 0 0 0.00 NULL 0.00 0.00 3gpp 3g.pp.cn 2008-11 2145797748 0 5750 0 0 0.00 NULL 0.00 0.00 tkwap tkwap.com 2008-11 2145909800 0 0 4071 0 0.00 0.00 15.00 0.00 3gpp 3g.pp.cn 2008-11 2145909800 0 0 4071 0 0.00 0.00 15.00 0.00 3gpp 3g.pp.cn 2008-11 2145908186 0 0 798 0 0.00 0.00 0.16 0.00 [email protected] http://3gwawa.com 2008-11 2145908186 0 0 798 0 0.00 0.00 0.16 0.00 [email protected] http://3gwawa.com 2008-11 2145909778 0 0 170 0 0.00 0.00 5.00 0.00 [email protected] ltmp3.cn 2008-11 2145909778 0 0 170 0 0.00 0.00 5.00 0.00 [email protected] ltmp3.cn 2008-11 2145847304 142 0 0 0 1.00 0.00 0.00 0.00 uuwap wap.wapwz.cn 2008-11 2145874581 23 0 0 0 1.00 0.00 0.00 0.00 uuwap 6.3nt.cn 2008-11 2145847304 0 7 0 0 0.00 NULL 0.00 0.00 uuwap wap.wapwz.cn 2008-11 2145800783 0 0 0 0 0.00 0.00 0.00 0.00 uuwap wapwz.cn 2008-11 2145874581 0 0 0 0 0.00 0.00 0.00 0.00 uuwap 6.3nt.cn 2008-11 2145874581 0 0 0 0 0.00 NULL 0.00 0.00 uuwap 6.3nt.cn 2008-11 2145847304 0 0 0 0 0.00 0.00 0.00 0.00 uuwap wap.wapwz.cn 2008-11 2145836931 0 0 0 0 0.00 0.00 0.00 0.00 andjiang wap.ucfly.com 2008-11 2145907505 0 0 0 0 0.00 0.00 0.00 0.00 yichaishd yicha.cn 2008-11 2145904011 0 0 0 0 0.00 0.00 0.00 0.00 mmbcn wap.mmb.cn 2008-11 2145900226 0 0 0 0 0.00 0.00 0.00 0.00 moabcyicha wap.moabc.com
另外的一个sql语句：
select case when price is null then 0 else price end as adPrice from t_client_stat