seems:
select cast(extract(epoch from current_timestamp) as integer);
is much simplier.
Michal Durys wrote:
>Hello,
>
>I hope it's not a question for psql-novice. ;-)
>
>I'd like to convert timestamp and date fields to intergers.
>Unfortunately cast() says it's impossible:
>
>ERROR: Cannot cast type date to integer
>ERROR: Cannot cast type timestamp without time zone to integer
>
>I'm quite sure it should be possible somehow. After all timestamp is
>(AFAIR) number of seconds counted from 1970.
>
>I need it for example to caclulate average number of downloads of a
>given file a day. For the time being I came up with an ugly solution
>like this:
>
>SELECT id, name, counter, counter/(extract(years FROM age(date_add))*365
>+ extract(months FROM age(date_add))*30 + extract(days FROM
>age(date_add)) + 1) AS ratio FROM dnload_files WHERE counter>0;
>
>I will be much obliged for any suggestions.
>
>Thanks in advance.
>
>
