sql server ¶¨ÒåÖ÷¼ü
drop table father;
create table father(
id int identity(1,1) primary key,
name varchar(20) not null,
age int not null
)
drop table mother;
create table mother(
id int identity(1,1),
name varchar(20) not null,
age int not null,
husband int not null
)
alter table mother
add constraint FK_ID foreign key(husband) references father(id)
Èç¹û ÔÚfatherÖÐûÄܶ¨ÒåÖ÷¼ü£¬
drop table father;
create table father(
id int identity(1,1), (䶨Òå primary key)
name varchar(20) not null,
age int not null
)
Ôò»á±¨ÈçÏÂÒì³££º
ÔÚ±»ÒýÓñí 'father' ÖÐûÓÐÓëÍâ¼ü 'FK_ID' µÄÒýÓÃÁеÄÁÐ±íÆ¥ÅäµÄÖ÷¼ü»òºòÑ¡¼ü
Ïà¹ØÎĵµ£º
×î½ü¼¸ÖÜÒ»Ö±ÔÚ½øÐÐÊý¾Ý¿âÅàѵ£¬ÀÏʦ¾«Õ¿µÄ¼¼ÊõºÍÉú¶¯µÄ½²½âʹÎÒÊÜÒæ·Ëdz¡£ÎªÁËÈøü¶àµÄÐÂÊÖÊÜÒæ£¬ÎÒ³é¿Õ°ÑSQLÓï¾äÓÅ»¯²¿·Ö½øÐÐÁËÕûÀí£¬Ï£Íû´ó¼ÒÒ»Æð½ø²½¡£¡¡¡¡
¡¡¡¡Ò»¡¢²Ù×÷·ûÓÅ»¯¡¡¡¡
¡¡1¡¢IN ²Ù×÷·û ¡¡¡¡
¡¡¡¡ÓÃINд³öÀ´µÄSQLµÄÓŵãÊDZȽÏÈÝÒ×д¼°ÇåÎúÒ×¶®£¬Õâ±È½ÏÊʺÏÏÖ´úÈí¼þ¿ª·¢µÄ·ç¸ñ¡£µ«ÊÇÓÃINµÄSQLÐÔÄÜ×ÜÊÇ±È½Ï ......
±È½ÏÁ½¸öSQLµÄÖ´ÐÐʱ¼ä
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[PROC_SQL_COMP]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[PROC_SQL_COMP]
GO
/*--²âÊÔÁ½×éSQLµÄƽ¾ùʱ¼ä
ÀûÓÃosql.exeÀ´²âÊÔÁ½×é SQL Óï¾äµÄÖ´ÐÐʱ¼ä
²âÊԵĴ洢¹ý³ ......
Ò»¡¢Ê¹ÓÃSqlConnection¶ÔÏóÁ¬½ÓSQL ServerÊý¾Ý¿â
1¡¢µÇ¼Êý¾Ý¿âµÄ·½Ê½ÎªSQL ServerÑé֤ģʽ
server=·þÎñÆ÷Ãû;database=Êý¾Ý¿âÃû³Æ;uid=Óû§;pwd=ÃÜÂë
2¡¢µÇ¼Êý¾Ý¿âµÄ·½Ê½ÎªWindowsÑé֤ģʽ
server=·þÎñÆ÷Ãû;database=Êý¾Ý¿âÃû³Æ;Integrated Security=SSPI
ÆäÖУ¬Integrated Security¼´Trusted_Connection,È¡Ö ......
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_movefile]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[p_movefile]
GO
/*--ÒÆ¶¯·þÎñÆ÷ÉϵÄÎļþ
²»½èÖú xp_cmdshell ,ÒòΪÕâ¸öÔÚ´ó¶àÊýʱºò¶¼±»½ûÓÃÁË
--×Þ½¨ 2004.08(ÒýÓÃÇë±£Áô´ËÐÅÏ¢)--*/
/*--µ÷ÓÃʾÀý ......
ÔÚ2005ÖÐÓÐͬÒå´ÊÓë¸´ÖÆµÄ¸ÅÄî
ͬÒå´ÊµÄÖ÷Òª×÷ÓÃÊÇ£º
Ò»£ºË޶̶ÔÏóµÄÃû³Æ£¬¼õÉÙ¹¤×÷ÈËÔ±ÊéдµÄʱ¼ä£¬Ìá¸ßЧÂÊ¡£ÎÒÃÇÖªµÀ·ÃÎÊÊý¾Ý¿âÒ»¸ö¶ÔÏóµÄͨ³£×îÈ«µÄ¶ÔÏóÃû³ÆÊÇ£º·þÎñÆ÷Ãû³Æ¡£Êý¾Ý¿âÃû³Æ¡£¼Ü¹¹Ãû³Æ¡£¶ÔÏóÃû³Æ
¶þ£ºÍ¬²½Êý¾Ý¡£ ......