Remove string before dot operator in table columns

Question

 
Hello All,
            I have a table with column names as "dbo.abc.sno","dbo.abc.sname","dbo.abc.dept".I want to change the columns names of the table as "sno","sname","dept".Can
you please share me the script for it.

Answer 1

DBA Developer,
this shud help for dynamic column name renaming:
--Sample table
create table abc
[dbo.abc.sno] int,
[dbo.abc.sname] varchar(255),
[dbo.abc.dept] varchar(255)
insert abc select 1,'jk','IT'
insert abc select 99,'jay','CSE'
select
identity(int,1,1) as id
,object_name(object_id) as table_name
,name as old_name
/*below mentioned expression to be built as per need. This one,
converts 'dbo.abc.sno' to 'sno'*/
,right(name,charindex('.',reverse(name))-1) as new_name
into #temp
from sys.columns
where object_id=object_id('abc')
declare @i int,@n int,@sql nvarchar(max)
set @i=1
set @n=(select count(*) from #temp)
while(@i<=@n)
begin
select @sql='EXEC sp_rename '''+table_name+'.['+old_name+']'','''+new_name+''',''column'''
from #temp
where id=@i
-- print @sql
EXEC(@sql)
set @i=@i+1
end
--cleanup
drop table #temp
drop table abc
Thanks,
Jay
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