[GENERAL] Logging Parameter Values

Hi,

While log_statements logs parameter values with the logged queries, I
cannot see parameter values logged for erronous queries and queries
catched by log_min_duration_statements.

Here are our logging settings:

# grep ^log postgresql.conf
logging_collector = on # Enable capturing of stderr and csvlog
log_directory = '/srv/pg/pg_log' # directory where log files are written,
log_filename = '%Y-%m-%d_%H%M%S.log' # log file name pattern,
log_rotation_age = 7d # Automatic rotation of logfiles will
log_rotation_size = 0MB # Automatic rotation of logfiles will
log_min_duration_statement = 1000 # -1 is disabled, 0 logs all statements
log_line_prefix = '%d %u %m ' # special values:

For instance, consider below log snippets.

eray_1_5_1_0 emove 2008-06-19 10:19:50.124 EEST ERROR: function isnull(integer, integer) does not exist at character 195
eray_1_5_1_0 emove 2008-06-19 10:19:50.124 EEST HINT: No function matches the given name and argument types. You might need to add explicit type casts.
eray_1_5_1_0 emove 2008-06-19 10:19:50.124 EEST STATEMENT: SELECT * FROM mugroup g WHERE g.groupid IN ((... user id=$1) UNION (SELECT ...))

test_1_5_0_0 emove 2008-05-15 15:07:08.631 EEST LOG: duration: 68544.986 ms parse <unnamed>: insert into interprettimelog (...) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16)

Is this something expected? What might I be missing? How can I make
PostgreSQL log parameter values also?

Regards.

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