How do I acccess value of returned result

[the-papi]

Hello,
at first sorry for this question... I am newbie in Lua.

When I use cjson.encode(res), I'll get something like this:

[{
	"id":	1,
	"col1":	"value1",
	"col2":	"value2",
	"col3":	null
}]

Can you tell me how can I get value of specific column?
I tried res[0].col2, res[0][col2], res[0]["col2"], but it doesn't work.

[the-papi]

Solved. I don't understand why arrays in Lua start at 1.
Can be closed :)