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1、1. sqlgroup by2005-05-09 2005-05-09 2005-05-09 2005-05-09 2005-05-10 2005-05-10 2005-05-10 , sql? 2005-05-09 2 22005-05-10 1 2-create table #tmp(rq varchar(10),shengfu nchar(1)insert into #tmp values(2005-05-09,)insert into #tmp values(2005-05-09,)insert into #tmp values(2005-05-09,)insert into #tmp
2、 values(2005-05-09,)insert into #tmp values(2005-05-10,)insert into #tmp values(2005-05-10,)insert into #tmp values(2005-05-10,)1) select rq, sum(case when shengfu= then 1 else 0 end),sum(case when shengfu= then 1 else 0 end) from #tmpgroup by rq2) select n.rq,n.,m.“ from (select rq,=count(*) from #
3、tmp where shengfu=group by rq)n inner join (select rq,“=count(*) from #tmp where shengfu=group by rq)m on n.rq=m.rq3) select a.rq,a.a1 ,b.b1 from (select rq,count(rq) a1 from #tmp whereshengfu= group by rq) a,(select rq,count(rq) b1 from #tmp where shengfu= group by rq) b where a.rq=b.rq2.sqla b c,s
4、qlababbcbc-create table #tmp(a int,b int,c int)insert into #tmp values(10,20,30)-insert into #tmp values(10,30,20)-insert into #tmp values(40,10,20)select * from #tmpselect (case when a>b then a else b end),(case when b>c then b else c end ) from #tmp3.sqltb_send(sendtime)?(sendtimedatetime)-s
5、elect * from #tmp where datediff(dd,rq,getdate()=0select * from #tmp where rq=rtrim(convert(varchar,getdate(),23)4.33708058sql806060 -create table #tmp( int, int , int)insert into #tmp values(70,80,58)-insert into #tmp values(100,50,60)select * from #tmpselect (case when >=80 then when >=60 th
6、en else end ) ,(case when >=80 then when >=60 then else end ) ,(case when >=80 then when >=60 then else end ) from #tmp5.sqlserver2000sqlididvalues,int?-:create table #xx(id int, idvalues int):create table #xx(id int, idvalues int):session,.sql server,session,.6.sqlserver2000-(*.dbf),sql
7、 server.sql server 2000 .mdf .ndf .ldf7.sqltable1,table2table3table1mon dep yj-01100210035028049038table2depdname-01020304table3 resultdep -0110 nullnull02108 null03null 5 804nullnull9-create table #a(mon varchar(10),dep varchar(10) ,yj int)insert into #a values(,01,10)insert into #a values(,02,10)i
8、nsert into #a values(,03,5)insert into #a values(,02,8)insert into #a values(,04,9)insert into #a values(,03,8)select * from #acreate table #b(dep varchar(10),dname varchar(20)insert into #b values(01,)insert into #b values(02,)insert into #b values(03,)insert into #b values(04,)select * from #b-1) sele
