Sql·ÖÒ³´úÂë
select * from books
where 1=1
and categoryid=29
and title like('%ASP.NET%')
and unitprice>10
order by id
Select top 20 * from books order by id
--m:ÿҳÏÔʾÐÐÊý n£ºµ±Ç°Ò³Êý
select Top m * from books
where id not in
(Select top m(n-1) id from books order by id)
order by id
select * from
(select Row_number() over(order by id) as num,
* from books) as table1
where num between 21 and 30
Ïà¹ØÎĵµ£º
ÔÚSql Server Öе÷ÓÃJmail×é¼þ·¢ËÍÓʼþ
Ô¤±¸ÖªÊ¶
1£®OLE×Ô¶¯»¯º¯Êý
OLE×Ô¶¯»¯Ê¹Ó¦ÓóÌÐòÄܹ»¶ÔÁíÒ»¸öÓ¦ÓóÌÐòÖÐʵÏֵĶÔÏó½øÐвÙ×÷£¬»òÕß½«¶ÔÏ󹫿ªÒÔ±ã¿ÉÒÔ¶ÔÆä½øÐвÙ×÷¡£×Ô¶¯»¯¿Í»§¶ËÊǿɶÔÊôÓÚÁíÒ»¸öÓ¦ÓóÌÐòµÄ¹«¿ª¶ÔÏó½øÐвÙ×÷µÄÓ¦ÓóÌÐò£¬±¾ÎÄÖµµÃÊÇSql Server¡£¹«¿ ......
--²âÊÔ±í
create table tb_month
(monthid varchar(2),mongthName varchar(50))
insert into tb_month
select '01','Ò»ÔÂ'
union all select '02','¶þÔÂ'
union all select '03','ÈýÔÂ'
union all select '04','ËÄÔÂ'
union all select '05','ÎåÔÂ'
union all select '06','ÁùÔÂ'
union all select '07','ÆßÔÂ'
......
/*
½¨±í£º
dept:
deptno(primary key),dname,loc
emp:
empno(primary key),ename,job,mgr,sal,deptno
*/
1 Áгöemp±íÖи÷²¿ÃŵIJ¿Ãźţ¬×î¸ß¹¤×Ê£¬×îµÍ¹¤×Ê
select max(sal) as ×î¸ß¹¤×Ê,min(sal) as ×îµÍ¹¤×Ê,deptno from emp group by deptno;
2 Áгöemp±íÖи÷²¿ÃÅjobΪ'CLERK'µÄÔ±¹¤µÄ×îµÍ¹¤×Ê£¬×î¸ß¹¤×Ê
sele ......
ÔÚSQL ServerÖÐ, ÎÒÃÇÓÐʱÐèÒªÔÚÇå¿ÕÊý¾Ý±íÖ®ºó£¬ÖØÐÂÌí¼Ó¼Ç¼ʱ£¬±êʶÁÐÖØÐ´Ó1¿ªÊ¼¼ÆÊý¡£
ÎÒÃÇÖ»ÐèÒªÔÚ²åÈë¼Ç¼֮ǰ£¬Ö´ÐÐÏÂÃæµÄÃüÁ
DBCC CHECKIDENT (±íÃû, RESEED, 0)
Èç¹ûÊÇÇå¿Õ±íÖÐÄÚÈÝÔÙÖØÖñêʶÁпÉÒÔÑ¡ÔñʹÓà Truncate Table ÃüÁ
Truncate Table tablename
TRUNCATE TABLE ÔÚ¹¦ÄÜÉÏÓë²»´ø WHERE ×Ó¾äµÄ ......
select * from sq_donglong.achi_news where ID in (select ID from (select top 6 ID from sq_donglong.achi_news where SortID=82)a union all select ID from (select top 6 ID from sq_donglong.achi_news where SortID=84)b)
......