Earliest Timestamp supported in PostgreSQL

Question

I work with different databases in a number of different time zones (and periods of time) and one thing that normally originates problems, is the date/time definition.

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Answer 1

The earliest timestamp is '-infinity'. This is a special value. The other side is 'infinity' which is later than any specific timestamp.

I don't know of a way of getting this programaticly. I would just use the value hard-coded the way you might use NULL. That means you have to handle infinities on the client side though.