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DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK)
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CREATE DATABASE database-name
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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],..)
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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÷£ºÉ¾³ýбídrop table tabname
6¡¢ËµÃ÷£ºÔö¼ÓÒ»¸öÁÐ
Alter table tabname add column col type
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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
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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§
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ÇóºÍ£ºselect sum(field1) as sumvalue from table1
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-->Title:Generating test data
-->Author:wufeng4552
-->Date :2009-09-25 09:56:07
if object_id('tb')is not null drop table tb
go
create table tb(ID int,name text)
insert tb select 1,'test'
go
--·½·¨1
select sql_variant_property(ID,'BaseType') from tb
--·½·¨2
select object_name(ID)± ......

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