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#66 ✓resolved
Sergey Shepelev

Array of composite/hstore type

Reported by Sergey Shepelev | August 15th, 2011 @ 03:05 PM

db=> create type comp_type_test as (id uuid, f1 char(2), f2 smallint, f3 char(3), f4 char(3));

>>> psycopg2.extras.register_composite('comp_type_test', connection, globally=True)

>>> db.execute("select ('000003b3-50a9-eeaa-4aab-2a95e6ca6592', 'J2', 600, 'MOW', 'BER')::comp_type_test").fetchone()
(comp_type_test(id=UUID('000003b3-50a9-eeaa-4aab-2a95e6ca6592'), f1=u'J2', f2=600, f3=u'MOW', f4=u'BER'),)

This is good.

>>> db.execute("select array[('000003b3-50a9-eeaa-4aab-2a95e6ca6592', 'J2', 600, 'MOW', 'BER')]::comp_type_test[]").fetchone()

This is not good.

Is it possible to make psycopg2 understand arrays of composite values (or at least arrays of hstore)?

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Psycopg is the most used PostgreSQL adapter for the Python programming language. At the core it fully implements the Python DB API 2.0 specifications. Several extensions allow access to many of the features offered by PostgreSQL.

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