Function bind_param_error_callback

src/backend/tcop/postgres.c:3356–3398

* bind_param_error_callback * * Error context callback used while parsing parameters in a Bind message */

 * Error context callback used while parsing parameters in a Bind message
 */
static void
bind_param_error_callback(void *arg)
{
	BindParamCbData *data = (BindParamCbData *) arg;
	StringInfoData buf;
	char	   *quotedval;

	if (data->paramno < 0)
		return;

	/* If we have a textual value, quote it, and trim if necessary */
	if (data->paramval)
	{
		initStringInfo(&buf);
		appendStringInfoStringQuoted(&buf, data->paramval,
									 log_parameter_max_length_on_error);
		quotedval = buf.data;
	}
	else
		quotedval = NULL;

	if (data->portalName && data->portalName[0] != '\0')
	{
		if (quotedval)
			errcontext("portal \"%s\" parameter $%d = %s",
					   data->portalName, data->paramno + 1, quotedval);
		else
			errcontext("portal \"%s\" parameter $%d",
					   data->portalName, data->paramno + 1);
	}
	else
	{
		if (quotedval)
			errcontext("unnamed portal parameter $%d = %s",
					   data->paramno + 1, quotedval);
		else
			errcontext("unnamed portal parameter $%d",
					   data->paramno + 1);
	}

	if (quotedval)
		pfree(quotedval);
}

/*
 * exec_describe_statement_message