Environment

• Python: 3.10.1
• pyodbc: built from current HEAD of master branch
• OS: macOS 11.6.2 (for client) Debian 10.2.1-6 (for server)
• DB: PostgreSQL 14.1
• driver: psqlodbcw.so 13.02.0000 (supports ODBC version 03.51)
• unixODBC 2.3.9

Issue

The test_columns() unit test in pgtests.py tries to access row.precision for each Row object in the results set returned by the call to cursor.columns(). This results in an error for the test.

======================================================================
ERROR: test_columns (__main__.PGTestCase)
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Traceback (most recent call last):
  File "/Users/bkline/repos/pyodbc/tests3/pgtests.py", line 575, in test_columns
    assert row.precision == 3, row.precision
AttributeError: 'pyodbc.Row' object has no attribute 'precision'

According to the documentation, precision is not a column in the rows returned by cursor.columns().