How to interpret this query?

Question

select symbol, close, tottrdqty, upper(to_char(to_date(tottrdqty,'J'), 'jsp')) amt_in_words from bhav;

Answer 1

1. look at the bhav table
2. grab the tottrdqty (probably total traded quantity) and return the Julian date in capitalized words in a new column called "amt_in_words"
3. along with these other columns (symbol, close, tottrdqty)