SQLServer在多个表中都增加一个字段的方法

1、使用游标

declare @sql varchar(), @name varchar()
declare my_cursor scroll cursor for
    select name from sysobjects where type = 'u' and name like 'jobs_%'
open my_cursor
fetch next from my_cursor into @name
while(@@fetch_status=)
begin
    print 'processing ' + @name
    set @sql = N'alter table testbfcmisuser.' + @name + N' add note varchar(200)'
    exec(@sql)
    print 'finished'
    fetch next from my_cursor into @name
end
close my_cursor
deallocate my_cursor

2、使用临时表

declare @sql varchar(), @name varchar(), @count int
 
select identity(int, , ) as ID, name
    into #JobTable
    from sysobjects
    where type = 'u' and name like   'Jobs_%'
 
set   @count=@@rowcount
 
while   @count>
begin
    select top  @name = name
        from #JobTable
        where id = @count
 
    print    'processing ' + @name
    set @sql = N'alter table testbfcmisuser.' + @name + N' add note varchar(200)'
    exec(@sql)
    print 'finished'
        set @count = @count -
end
 
drop   table   #JobTable
 
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