declare @tableID int
declare @columnName varchar(50)
declare @sql varchar(8000)
set @tableName=''
set @columnName=''
declare cur cursor for
select name,id from syscolumns
where xtype=58 --58对应的类型是smalldatetime (参考systypes表)
open cur
fetch next from cur into @columnName,@tableID
while @@fetch_status=0
begin
select @tableName=name from sysobjects where id=@tableID
set @sql =' alter table '+@tableName+' alter column '+@columnName+' datetime'
print @sql
exec(@sql)
fetch next from cur into @columnName,@tableID
end
close cur
deallocate cur