current_timestamp - 20 minutes

[Matthew Terenzio <matt@xxxxxxxxxxxxx>]

I 'm storing things in a table with now() and I want to select * from 
theTable WHERE the Timestamp is > the current time - 20 minutes

Anyone know the correct syntax. I was trying something like:

WHERE timestamp_field > (timestamp now() - interval '20 minutes')

and will continue reading the manual


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