修改sql server实例、数据库、表、字段的排序规则
转自:http://blog.51cto.com/jimshu/1095780
概念与详情请参考:字符编码与排序规则:https://www.cnblogs.com/gered/p/9145123.html
零、修改表达式排序规则
问题1:
解决:
set @mdf=(SELECT dsize/1024 FROM #tf_driver a,db_tank..sysfiles b WHERE b.name='Db_Tank_Data' and a.driver COLLATE chinese_prc_ci_as =LEFT(b.FILENAME,1)) set @ldf=(SELECT dsize/1024 FROM #tf_driver a,db_tank..sysfiles b WHERE b.name='Db_Tank_Log' and a.driver COLLATE chinese_prc_ci_as =LEFT(b.FILENAME,1))
问题2:
解决:见最后一行
select t1.name,t1.system_type_id,t1.user_type_id,t1.max_length,t2.* from ( select * from test2.sys.columns where object_id=object_id('Sys_Users_History') ) t1 join ( select t2.name tab_name,t1.name,t1.system_type_id,t1.user_type_id,t1.max_length from [10.1.4.234].db_tank.sys.columns t1 join [10.1.4.234].db_tank.dbo.sysobjects t2 on t1.object_id=t2.id and t2.name = 'Sys_Users_History' ) t2 on t1.name= t2.name collate Chinese_PRC_90_CI_AI
一、修改SQL Server服务器(实例)的排序规则
以下实验使用了SQL Server 2008 R2的默认实例,将Chinese_PRC_CI_AS修改成SQL_Latin1_General_CP1_CI_AS。
1. 停止SQL Server实例服务
2. 打开“命令提示符”,转到SQL Server的安装目录
C:\Users\Administrator> cd "\Program Files\Microsoft SQL Server\100\Setup Bootstrap\SQLServer2008R2"
3. 运行setup
C:\Program FIles\Microsoft SQL Server\100\Setup Bootstrap\SQLServer2008R2>
setup /QUIET /ACTION=REBUILDDATABASE /instancename=mssqlserver /SQLSYSADMINACCOUNTS=administrator /sqlcollation=SQL_Latin1_General_CP1_CI_AS
4. 启动SQL Server实例服务
5. 验证实例的排序规则
6. 验证系统数据库(master、model、msdb、tempdb)的排序规则
说明:此操作仅影响系统数据库。对于已经存在的用户数据库无效。
二、修改数据库的排序规则
以下实验将修改数据库db01的排序规则,将SQL_Latin1_General_CP1_CI_AS修改成Chinese_PRC_CI_AS。
1. SSMS图形界面
2. 脚本
ALTER DATABASE [db01] COLLATE Chinese_PRC_CI_AS
3. 局限性
(1)对于已经存在的数据,此操作并不会导致立即重新排序。
(2)如果已经有对象依赖于数据库排序规则,则更改不成功。
三、修改表的排序规则(依赖库规则,不能改)
表的排序规则依赖于数据库的排序规则。不能修改。
四、修改列的排序规则
建议:将这个表的数据保存到另一个临时表,重建这个表,然后从临时表将数据导入到新表。
可以通过SSMS修改某一列的排序规则,但是,这项操作实际上还是删除这个表以及相关的约束、触发器,然后重建这个表、约束、索引、触发器。
T-SQL代码实现:
ALTER TABLE dbo.EmpBasic DROP CONSTRAINT DF__EmpBasic__FirstN__2319CD4B ALTER TABLE dbo.EmpBasic DROP CONSTRAINT ...... CREATE TABLE dbo.Tmp_EmpBasic ( ...... FirstName nvarchar(30) COLLATE Chinese_PRC_CI_AS NULL, ...... ) ON [PRIMARY] ALTER TABLE dbo.Tmp_EmpBasic SET (LOCK_ESCALATION = TABLE) GRANT DELETE ON dbo.Tmp_EmpBasic TO public AS dbo GRANT INSERT ON dbo.Tmp_EmpBasic TO public AS dbo GRANT SELECT ON dbo.Tmp_EmpBasic TO public AS dbo GRANT UPDATE ON dbo.Tmp_EmpBasic TO public AS dbo ALTER TABLE dbo.Tmp_EmpBasic ADD CONSTRAINT DF__EmpBasic__FirstN__2319CD4B DEFAULT ('') FOR FirstName ALTER TABLE dbo.Tmp_EmpBasic ADD CONSTRAINT DF__EmpBasic__Middle__240DF184 ...... SET IDENTITY_INSERT dbo.Tmp_EmpBasic ON IF EXISTS(SELECT * FROM dbo.EmpBasic) EXEC('INSERT INTO dbo.Tmp_EmpBasic (Company, EmpID, FirstName,......) SELECT Company, EmpID, FirstName, ...... FROM dbo.EmpBasic WITH (HOLDLOCK TABLOCKX)') SET IDENTITY_INSERT dbo.Tmp_EmpBasic OFF DROP TABLE dbo.EmpBasic EXECUTE sp_rename N'dbo.Tmp_EmpBasic', N'EmpBasic', 'OBJECT' CREATE UNIQUE CLUSTERED INDEX EmpID ON dbo.EmpBasic (Company, EmpID ) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = OFF) ON [PRIMARY] CREATE NONCLUSTERED INDEX FirstName ON dbo.EmpBasic ( Company, FirstName, LastName ) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = OFF) ON [PRIMARY] create trigger _ti_EmpBasic ON dbo.EmpBasic for insert as begin ...... end