1¡¢ËµÃ÷£º¸´ÖƱí(Ö»¸´Öƽṹ,Ô´±íÃû£ºa бíÃû£ºb) (Access¿ÉÓÃ)
·¨Ò»£ºselect * into b from a where 1 <>1
·¨¶þ£ºselect top 0 * into b from a
2¡¢ËµÃ÷£º¿½±´±í(¿½±´Êý¾Ý,Ô´±íÃû£ºa Ä¿±ê±íÃû£ºb) (Access¿ÉÓÃ)
insert into b(a, b, c) select d,e,f from b;
3¡¢ËµÃ÷£º¿çÊý¾Ý¿âÖ®¼ä±íµÄ¿½±´(¾ßÌåÊý¾ÝʹÓþø¶Ô·¾¶) (Access¿ÉÓÃ)
insert into b(a, b, c) select d,e,f from b in ‘¾ßÌåÊý¾Ý¿â’ where Ìõ¼þ
Àý×Ó£º..from b in '"&Server.MapPath(".")&"\data.mdb" &"' where..
4¡¢ËµÃ÷£º×Ó²éѯ(±íÃû1£ºa ±íÃû2£ºb)
select a,b,c from a where a IN (select d from b ) »òÕß: select a,b,c from a where a IN (1,2,3)
5¡¢ËµÃ÷£ºÏÔʾÎÄÕ¡¢Ìá½»È˺Í×îºó»Ø¸´Ê±¼ä
select a.title,a.username,b.adddate from table a,(select max(adddate) adddate from table where table.title=a.title) b
6¡¢ËµÃ÷£ºÍâÁ¬½Ó²éѯ(±íÃû1£ºa ±íÃû2£ºb)
select a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c
7¡¢ËµÃ÷£ºÔÚÏßÊÓͼ²éѯ(±íÃû1£ºa )
select * from (SELECT a,b,c from a) T where t.a > 1;
8¡¢ËµÃ÷£ºbetweenµÄÓ÷¨,betweenÏÞÖÆ²éѯÊý¾Ý·¶Î§Ê±°üÀ¨Á˱߽çÖµ,not between²»°üÀ¨
select * from table1 where time between time1 and time2
select a,b,c, from table1 where a not between ÊýÖµ1 and ÊýÖµ2
9¡¢ËµÃ÷£ºin µÄʹÓ÷½·¨
select * from table1 where a [not] in (‘Öµ1’,’Öµ2’,’Öµ4’,’Öµ6’)
10¡¢ËµÃ÷£ºÁ½ÕŹØÁª±í£¬É¾³ýÖ÷±íÖÐÒѾÔÚ¸±±íÖÐûÓеÄÐÅÏ¢
delete from table1 where not exists ( select * from table2 where table1.field1=table2.field1 )
11¡¢ËµÃ÷£ºËıíÁª²éÎÊÌ⣺
select * from a left inner join b on a.a=b.b right inner join c on a.a=c.c inner join d on a.a=d.d where .....
12¡¢ËµÃ÷£ºÈճ̰²ÅÅÌáǰÎå·ÖÖÓÌáÐÑ
SQL: select * from Èճ̰²ÅÅ where datediff('minute',f¿ªÊ¼Ê±¼ä,getdate())>5
13¡¢ËµÃ÷£ºÒ»Ìõsql Óï¾ä¸ã¶¨Êý¾Ý¿â·ÖÒ³
select top 10 b.* from (select top 20 Ö÷¼ü×Ö¶Î,ÅÅÐò×Ö¶Î from ±íÃû order by ÅÅÐò×Ö¶Î desc) a,±íÃû b where b.Ö÷¼ü×Ö¶Î = a.Ö÷¼ü×Ö¶Î order by a.ÅÅÐò×Ö¶Î
14¡¢ËµÃ÷£ºÇ°10Ìõ¼Ç¼
select top 10 * form table1 where ·¶Î§
15¡