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0b34e7d307
This patch replaces the boolean GUC log_parameters_on_error introduced by commit ba79cb5dc with an integer log_parameter_max_length_on_error, adding the ability to specify how many bytes to trim each logged parameter value to. (The previous coding hard-wired that choice at 64 bytes.) In addition, add a new parameter log_parameter_max_length that provides similar control over truncation of query parameters that are logged in response to statement-logging options, as opposed to errors. Previous releases always logged such parameters in full, possibly causing log bloat. For backwards compatibility with prior releases, log_parameter_max_length defaults to -1 (log in full), while log_parameter_max_length_on_error defaults to 0 (no logging). Per discussion, log_parameter_max_length is SUSET since the DBA should control routine logging behavior, but log_parameter_max_length_on_error is USERSET because it also affects errcontext data sent back to the client. Alexey Bashtanov, editorialized a little by me Discussion: https://postgr.es/m/b10493cc-a399-a03a-67c7-068f2791ee50@imap.cc