MySQL previous next query

I need to build a query that needs to find the previous or next record in a database using a form. The records are numbered using a field called 'sb_num'. This field is initially set using the form. Would something like this work Next: Select 'field1', 'field2' from table order by sb_num where $sb_num>=++sb_num limit 1 Previous Select 'field1', 'field2' from table order by sb_num desc where $sb_num<=--$sb_num limit 1 Luis lrlebron@home.com