How to sort a table this way?

[12p]

I have this kind of table:

theTable = { {value1, value2, value3}, {valueA, valueB, valueC} } 

I will store them in a gridlist, but I want to sort the mini-tables by the second value, how to do that?

I saw at LUA Wiki but I didn't see any way to sort more complicated tables like this one.