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½ñÌìÈ¥µÄÃæÊÔ¹«Ë¾³öÁËÒ»µÀsqlÓï¾äÌ⣬ ²¿Ãűídepa: dno int ²¿ÃűàºÅ£¬dname ²¿ÃÅÃû³Æ , Ô±¹¤±íemp: eno int Ô±¹¤±àºÅ ,dno ËùÔÚ²¿ÃűàºÅ, salary ¹¤×ʱí: id ±àºÅ£¬ eno Ô±¹¤±àºÅ, salary Ô±¹¤¹¤×Ê
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select a.dname as '²¿ÃűàºÅ' , max(c.salary) as 'ƽ¾ù¹¤×Ê' from depa as a inner join emp as b on a.dno=b.dno inner join salary as c on b.eno=c.eno group by a.dname  order by 'ƽ¾ù¹¤×Ê' desc

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select Ô±¹¤ÐÕÃû=emp.name,+Äã×Ô¼ºÐ´µÄÄÇÒ»´®¾Í¿ÉÒÔÁË

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ÊDz»ÊÇÔ±¹¤±íÀïÄãÉÙЩÁËÒ»ÁУ¬Óиöename?


Ô±¹¤±íemp: eno int Ô±¹¤±àºÅ ,dno ËùÔÚ²¿ÃűàºÅ,dname Ô±¹¤ÐÕÃû,ºÇºÇ£¬ÊÇÉÙÁ˸ö£¬¼ÓÁË

SQL code:

select d.dname,d.¹¤×Ê as ×î¸ß¹¤×Ê,b.eno,b.ename from (select a.dname,max (c.salary) ¹¤×Ê
from a,b,c
where a.dno=b.dno and b.eno=c.eno
group by a.dname ) d,b,c
where d.¹¤×Ê=c.salary and c.eno=b.eno
order by d.¹¤×Ê desc




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sqlת»»ÎÊÌ⣬¼±£¡ - ÉçÇøÖ§³Ö / ¡¶³ÌÐòÔ±¡·ÔÓÖ¾

select convert(varchar(50),cast(convert(numeric(18,2),1275674000000/100000000)as real))+'ÒÚ'
select cast(convert(numeric(18,2),1275674000000/100000000)as real)
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Çë½ÌsqlÓï¾ä¡£ - Oracle / ¿ª·¢

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date(Ö÷) outid(Ö÷) inid(Ö÷) num amt
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sqlССµÄÒÉÎÊ - .NET¼¼Êõ / C#

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

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select ²¿ÃÅ,ÐÕÃû from tb
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Á½¾äSQL²¢Ò»¾ä,ÓÐÎÊÌâ. - MS-SQL Server / »ù´¡Àà

µÚÒ»¾ä:
select ht.gfdm,gfdm.gfmc,gfdm.lb ,sum(jh.htdj*jh.htsl)as je
from ht left join gfdm on ht.gfdm=gfdm.gfdm 
 join jh on ht.htbh=jh.hth 
and ht.htbh not like'del%' and ht. ......
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