how to get nearest value from database in mysql

Question

I am using mySQL and CodeIgniter. I have some floating point numbers in my database such as

• 8.3456
• 8.5555
• 4.5556

Answer 1

Unfortunately, I think your database will probably do a full table scan for solutions that involve abs, so they will be (very) slow once your table grows. A fast-running solution may be found in this earlier thread.