减少postgresql日志冗长度

Question

每次我调用参数化查询时，都会在日志文件中获得太多输出。例如，将3个用户到表中时，我得到以下日志输出：

2013-10-29 06:01:43 EDT LOG: duration: 0.000 ms parse <unnamed>: INSERT INTO users (login,role,password) VALUES 
    ($1,$2,$3) 
    ,($4,$5,$6) 
    ,($7,$8,$9) 
2013-10-29 06:01:43 EDT LOG: duration: 0.000 ms bind <unnamed>: INSERT INTO users (login,role,password) VALUES 
    ($1,$2,$3) 
    ,($4,$5,$6) 
    ,($7,$8,$9) 
2013-10-29 06:01:43 EDT DETAIL: parameters: $1 = 'guest', $2 = 'user', $3 = '123', $4 = 'admin', $5 = 'admin', $6 = '123', $7 = 'mark', $8 = 'power user', $9 = '123' 
2013-10-29 06:01:43 EDT LOG: execute <unnamed>: INSERT INTO users (login,role,password) VALUES 
    ($1,$2,$3) 
    ,($4,$5,$6) 
    ,($7,$8,$9) 
2013-10-29 06:01:43 EDT DETAIL: parameters: $1 = 'guest', $2 = 'user', $3 = '123', $4 = 'admin', $5 = 'admin', $6 = '123', $7 = 'mark', $8 = 'power user', $9 = '123' 
2013-10-29 06:01:43 EDT LOG: duration: 4.000 ms 

注意，整个查询出现三次 - 用于解析，对地结合和执行。整套参数出现两次 - 用于绑定和执行。

请注意，只有在运行参数化查询时才会出现这种冗余性。

这里是我的配置：

C:\Program Files\PostgreSQL\9.2\data>findstr log_ postgresql.conf 
# "postgres -c log_connections=on". Some parameters can be changed at run time 
log_destination = 'stderr'    # Valid values are combinations of 
log_directory = 'pg_log'    # directory where log files are written, 
log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name pattern, 
log_file_mode = 0600     # creation mode for log files, 
#log_truncate_on_rotation = off   # If on, an existing log file with the 
#log_rotation_age = 1d     # Automatic rotation of logfiles will 
#log_rotation_size = 10MB    # Automatic rotation of logfiles will 
#syslog_facility = 'LOCAL0' 
#syslog_ident = 'postgres' 
log_min_messages = notice    # values in order of decreasing detail: 
log_min_error_statement = error # values in order of decreasing detail: 
log_min_duration_statement = 0 # -1 is disabled, 0 logs all statements 
#log_checkpoints = off 
#log_connections = off 
#log_disconnections = off 
#log_duration = off 
#log_error_verbosity = default   # terse, default, or verbose messages 
#log_hostname = off 
log_line_prefix = '%t '     # special values: 
#log_lock_waits = off     # log lock waits >= deadlock_timeout 
log_statement = 'all'     # none, ddl, mod, all 
#log_temp_files = -1     # log temporary files equal or larger 
log_timezone = 'US/Eastern' 
#log_parser_stats = off 
#log_planner_stats = off 
#log_executor_stats = off 
#log_statement_stats = off 
#log_autovacuum_min_duration = -1  # -1 disables, 0 logs all actions and 

C:\Program Files\PostgreSQL\9.2\data> 

所以，我的问题是如何减少日志参数化查询的详细程度而不会影响其他查询？理想情况下，我希望查询SQL及其参数只记录一次。

Answer 1

我不认为这是可能的开箱即用。你可以编写一个日志钩子和过滤日志条目。