Finding the lowest value in a table greater than a certain value

Question

Say I have the following data

Name      Value
===============
Small        10
Medium      100
Large      1000

Imagine that these represent the

Answer 1

Just for fun I made the assumption that the target sizes are coming from a table of packages and you want to find the boxes for a bunch of packages. COALESCE chooses the second value if the first is NULL.

SELECT  
    p.pkgid,  
    p.pkgsize,  
    COALESCE(MIN(b1.size), MAX(b2.size) AS boxsize    
FROM packages AS p  
LEFT JOIN boxes AS b1 ON p.pkgsize < b1.boxsize  
LEFT JOIN boxes AS b2  -- yes, a cartesian join 
GROUP BY p.pkgid, p.pkgsize

As a single statement to compare to the other solutions, use

SELECT  
    COALESCE(MIN(b1.size), MAX(b2.size) AS boxsize    
FROM Table AS t1,  
     Table AS t2   
WHERE targetsize < t1.Value