SQL³£ÓÃÓï¾ä
SQL³£ÓÃÓï¾ä
SQLÓï¾äÏÈǰдµÄʱºò£¬ºÜÈÝÒ×°ÑÒ»Ð©ÌØÊâµÄÓ÷¨Íü¼Ç£¬ÎÒÌØ´ËÕûÀíÁËÒ»ÏÂSQLÓï¾ä²Ù×÷¡£
Ò»¡¢»ù´¡
1¡¢ËµÃ÷£º´´½¨Êý¾Ý¿â
CREATE DATABASE database-name
2¡¢ËµÃ÷£ºÉ¾³ýÊý¾Ý¿â
drop database dbname
3¡¢ËµÃ÷£º±¸·Ýsql server
--- ´´½¨ ±¸·ÝÊý¾ÝµÄ device
USE master
EXEC sp_addumpdevice 'disk', 'testBack', 'c:\mssql7backup\MyNwind_1.dat'
--- ¿ªÊ¼ ±¸·Ý
BACKUP DATABASE pubs TO testBack
4¡¢ËµÃ÷£º´´½¨Ð±í
create table tabname(col1 type1 [not null] [primary key],col2 type2 [not null],..)
¸ù¾ÝÒÑÓÐµÄ±í´´½¨ÐÂ±í£º
A£ºcreate table tab_new like tab_old (ʹÓÃ¾É±í´´½¨Ð±í)
B£ºcreate table tab_new as select col1,col2... from tab_old definition only
5¡¢ËµÃ÷£ºÉ¾³ýбí
drop table tabname
6¡¢ËµÃ÷£ºÔö¼ÓÒ»¸öÁÐ
Alter table tabname add column col type
×¢£ºÁÐÔö¼Óºó½«²»ÄÜɾ³ý¡£DB2ÖÐÁмÓÉϺóÊý¾ÝÀàÐÍÒ²²»Äܸı䣬ΨһÄܸıäµÄÊÇÔö¼ÓvarcharÀàÐ͵ij¤¶È¡£
7¡¢ËµÃ÷£ºÌí¼ÓÖ÷¼ü£º Alter table tabname add primary key(col)
˵Ã÷£ºÉ¾³ýÖ÷¼ü£º Alter table tabname drop primary key(col)
8¡¢ËµÃ÷£º´´½¨Ë÷Òý£ºcreate [unique] index idxname on tabname(col....)
ɾ³ýË÷Òý£ºdrop index idxname
×¢£ºË÷ÒýÊDz»¿É¸ü¸ÄµÄ£¬Ïë¸ü¸Ä±ØÐëɾ³ýÖØÐ½¨¡£
9¡¢ËµÃ÷£º´´½¨ÊÓͼ£ºcreate view viewname as select statement
ɾ³ýÊÓͼ£ºdrop view viewname
10¡¢ËµÃ÷£º¼¸¸ö¼òµ¥µÄ»ù±¾µÄsqlÓï¾ä
Ñ¡Ôñ£ºselect * from table1 where ·¶Î§
²åÈ룺insert into table1(field1,field2) values(value1,value2)
ɾ³ý£ºdelete from table1 where ·¶Î§
¸üУºupdate table1 set field1=value1 where ·¶Î§
²éÕÒ£ºselect * from table1 where field1 like '%value1%' ---likeµÄÓï·¨ºÜ¾«Ã²é×ÊÁÏ!
ÅÅÐò£ºselect * from table1 order by field1,field2 [desc]
×ÜÊý£ºselect count as totalcount from table1
ÇóºÍ£ºselect sum(field1) as sumvalue from table1
ƽ¾ù£ºselect avg(field1) as avgvalue from table1
×î´ó£ºselect max(field1) as maxvalue from table1
×îС£ºselect min(field1) as minvalue from table1
11¡¢ËµÃ÷£º¼¸¸ö¸ß¼¶²éѯÔËËã´Ê
A£º UNION ÔËËã·û
UNION ÔËËã·ûͨ¹ý×éºÏÆäËûÁ½¸ö½á¹û±í£¨ÀýÈç TABLE1 ºÍ TABLE2£©²¢ÏûÈ¥±íÖÐÈκÎÖØ¸´ÐжøÅÉÉú³öÒ»¸
Ïà¹ØÎĵµ£º
¡¡×Ô´ÓSQL Server 2005ÍÆ³öºó£¬ÒòΪÓÐÁ˸üºÃµÄÐÔÄÜ£¬ËùÒÔÓкܶàÓëSQL Server 2000Ïà¹ØµÄÓ¦ÓóÌÐòÐèÒªÉý¼¶µ½Õâ¸ö°æ±¾¡£µ«ÈçºÎ²ÅÄÜÒÔ×î¿ì×î·½±ãµÄ·½Ê½°ÑÆäÖеıí½á¹¹¼°¶ÔÓ¦µÄÊý¾ÝºÍÊý¾ÝµÄÆäËüµÄ¸ñʽµ¼Èëµ½SQL Server 2005ÄØ£¿SQL Server 2005µÄÊý¾ÝÓÖÈçºÎµ¼Èëµ½SQL Server 2000ÉÏ£¿ÎÒÃÇ·Ö±ðÀ´¿´ÏÂÃæÊµÏֵķ½Ê½£º
¡¡¡¡1) SQL ......
ÏÂÃæÊÇSql Server ºÍ Access ²Ù×÷Êý¾Ý¿â½á¹¹µÄ³£ÓÃSql£¬Ï£Íû¶ÔÄãÓÐËù°ïÖú¡£
н¨±í£º
create table [±íÃû]
(
[×Ô¶¯±àºÅ×Ö¶Î] int IDENTITY (1,1) PRIMARY KEY ,
[×Ö¶Î1] nVarChar(50) default \'ĬÈÏÖµ\' null ,
[×Ö¶Î2] ntext null ,
[×Ö¶Î3] datetime,
[×Ö¶Î4] money null ,
[×Ö¶Î5] int default 0,
[×Ö¶Î6] De ......
ÔÚSQL Server2005ÖÐÑ¡ÖÐÒªµ¼ÈëÊý¾ÝµÄ¿â > ÓÒ¼ü > н¨²éѯ£º
Ö´ÐÐSQLÓï¾äÈçÏ£º
insert into
Ä¿±êÊý¾Ý¿â±íÃû (×Ö¶Î1,×Ö¶Î2,....) select
×Ö¶Î1,×Ö¶Î2... from
openrowset
('microsoft.jet.oledb.4.0',';database=Ô´Êý¾Ý¿â·¾¶£¨È磺d:\test.mdb£©','select * from Ô´±í where ²éѯÌõ¼þ')
SQL Óï¾äÆôÓÃ×é¼ ......
sqlµ¼³öµ½Excel
´ÓExcelÎļþÖÐ,µ¼ÈëÊý¾Ýµ½SQLÊý¾Ý¿âÖÐ,ºÜ¼òµ¥,Ö±½ÓÓÃÏÂÃæµÄÓï¾ä:
/*===================================================================*/
--Èç¹û½ÓÊÜÊý¾Ýµ¼ÈëµÄ±íÒѾ´æÔÚ
insert into ±í select * from
OPENROWSET('MICROSOFT.JET.OLEDB.4.0'
,'Excel 5.0;HDR=YES;DATABASE=c:\test.xls',sheet1 ......
Èç¹ûÄúÊý¾Ý¿âϵͳ°²×°ÔÚϵͳÅÌ£¨±ÈÈç C ÅÌ£©£¬ÓÉÓÚ C ÅÌÈÝÒ×Êܲ¡¶¾ÇÖº¦£¬ÄúÒ²ÐíÏ£ÍûÄúµÄÊý¾Ý´æ·ÅÔÚ·ÇϵͳÅÌ£¨±ÈÈç D ÅÌ£©£¬Òª×öµÄÕâµãºÜ¼òµ¥£¬Äú²¢²»ÐèÒªÖØ×°Êý¾Ý¿â£¬Ö»Òª°ÑÊý¾Ý“·ÖÀ딣¬È»ºó½«Ïà¹ØÎļþÒÆ¶¯µ½ D Å̵Äij¸öĿ¼£¬½Ó×Å“¸½¼Ó”Êý¾Ý¿â¼´¿É¡£
SQL Server 2000ÔÊÐí·ÖÀëÊý¾Ý¿âµÄÊý¾ÝºÍÊÂÎñÈ ......