pulling year out of a timestamp
I am trying to perform a join between two tables where I need to join "year" in table 1 with the year component of a timestamp in table 2.
Something like this:
table1.year = table2.timestamp
where timestamp has the format: "2009-01-01 00:00:00"
I've tried
date_trunc('year', table2.timestamp) = table1.year
but am getting this error:
ERROR: operator does not exist: timestamp without time zone = integer
LINE 15: AND date_trunc('year', _60min_user.time2) = power.year
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
Am I barking up the completely wrong tree?
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On Thu, Apr 04/11/13, 2013 at 10:50:53AM -0500, Kirk Wythers wrote:
I am trying to perform a join between two tables where I need to join "year" in table 1 with the year component of a timestamp in table 2.
Something like this:
table1.year = table2.timestamp
where timestamp has the format: "2009-01-01 00:00:00"I've tried
date_trunc('year', table2.timestamp) = table1.year
You want date_part, not date_trunc.
-Ryan
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