if i execute a query in mysql select dialprefix,rateinitial from cc_ratecard where (dialprefix='001' or dialprefix='00123') ORDER BY LENGTH(dialprefix) DESC;

result

row1 | 001 | 0.01000 |

row22 | 00123 | 0.02000 |

and this is   lua code

local rates = {}
local count = "";

     assert(dbh:query(query, function(qrow)
        for key, val in pairs(qrow) do
            rates[key] = val
freeswitch.consoleLog("INFO","    rates   :"..key.. "..="..val.." \n")
        end
count = qrow.count;
        end))

questios is
1 how to select 2nd row from result ?

2 how to count total rows ?

3 how to print all 2 rows in console ?

any suggestios wellcome