I have a table (which i cannot modify) where date and time fields are stored as VARCHAR. But i have to cast these fields into timestamp.
My requirement is like,
timestamp (select date, time where max(timestamp(d ate,time));
How to do this in postgres?
3  14905  michaelb 534
Recognized Expert Contributor
I'm not sure if you can really cast varchar into timestamp, (although I don't have the latest version of Postgres, which may have a larger set of cast operators), but you can try something like this instead: - select (mydate || ' ' || mytime) from foo where (mydate || ' ' || mytime) = (select max (mydate || ' ' || mytime) from foo);
Thank you,
I found a function to_timestamp and it casts string into timestamp
I tried sth like ,
to_timestamp('0 1 Jan 2007 09:09:09', 'DD Mon YYYY HH:MI:SS')
It works .
michaelb 534
Recognized Expert Contributor
Great, thanks for letting me know.
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