Hi!

In order to convert timestamps from unix time to GMT strings I used the following select query: SELECT TIMESTAMP 'epoch' + 1195374767 * INTERVAL '1 second' or, the s-sql analogue `(:select (:+ (:type "epoch" timestamp) (:* ,unix-time (:type "1 second" interval)))) Surprisignly, it returned timestamps as numbers, not strings. After some investigation the reason of that behaviour became clear. Consider 2 following queries.

(pomo:query (:select 'timestamp :from 'sales :where (:and (:= 'vend-machine-id 2) (:< 'timestamp "2009-01-12")))) (("2009-01-11 18:37:18+03") ("2009-01-11 23:59:59+03") ("2009-01-11 23:59:59+03") ("2009-01-11 23:59:59+03") ("2009-01-11 23:59:59+03") ("2009-01-11 23:59:59+03"))

(pomo:query (:select (:type 'timestamp timestamp) :from 'sales :where (:and (:= 'vend-machine-id 2) (:< 'timestamp "2009-01-12")))) ((3440687838) (3440707199) (3440707199) (3440707199) (3440707199) (3440707199))

So, type-cast to TIMESTAMP makes postmodern to return timestamps as numbers. How is it possible to return unix-time as GMT strings via postmodern sql queries?