/*--修改自定义数据类型精度的示例 假设要修改的自定义变量名为aa--*/--1.修改自定义变量类型的名称 exec sp_rename 'aa','aa_bak','USERDATATYPE' go--2.新增自定义变量(按新的精度) EXEC sp_addtype N'aa', N'numeric(20,2)', N'not null' go--3.修改表,使用新增的自定义变量declare @s varchar(8000) declare tb cursor local for select 'alter table ['+object_name(a.id)+'] alter column [' +a.name+'] aa' from syscolumns a join systypes b on a.xusertype=b.xusertype where b.name='aa_bak' and objectproperty(a.id,N'IsUserTable')=1 open tb fetch next from tb into @s while @@fetch_status=0 begin exec(@s) fetch next from tb into @s end close tb deallocate tb go--刷新视图 declare hCForEach cursor global for select '[' + REPLACE(user_name(uid), N']', N']]')+'].[' + REPLACE(object_name(id), N']', N']]')+ ']' from dbo.sysobjects where xtype='V' and status>=0exec sp_MSforeach_worker 'sp_refreshview ''?'''
exec sp_rename 'aa','aa_bak','USERDATATYPE'
go--2.新增自定义变量(按新的精度)
EXEC sp_addtype N'aa', N'numeric(20,2)', N'not null'
go--3.修改表,使用新增的自定义变量declare @s varchar(8000)
declare tb cursor local
for select 'alter table ['+object_name(a.id)+'] alter column ['
+a.name+'] aa'
from syscolumns a join systypes b on a.xusertype=b.xusertype
where b.name='aa_bak' and objectproperty(a.id,N'IsUserTable')=1
open tb
fetch next from tb into @s
while @@fetch_status=0
begin
exec(@s)
fetch next from tb into @s
end
close tb
deallocate tb
go--刷新视图
declare hCForEach cursor global for
select '[' + REPLACE(user_name(uid), N']', N']]')+'].['
+ REPLACE(object_name(id), N']', N']]')+ ']'
from dbo.sysobjects
where xtype='V' and status>=0exec sp_MSforeach_worker 'sp_refreshview ''?'''