sUpdate = [[UPDATE `latest`
SET `date` = '%s'
WHERE `date` = '%s'
AND `fid` > 50000]]
for i = 1, 12 do
print( i )
sOldDate = string.format("2009-%d-10", i)
sNewDate = "2010-09-"..tostring(i)
sUpdate = string.format( sUpdate, sNewDate, sOldDate )
print( sUpdate )
end