Function prepareQueryForLogging

src/Interpreters/executeQuery.cpp:398–416

static String prepareQueryForLogging(const String & query, ContextPtr context)
{
    String res = query;

    // wiping sensitive data before cropping query by log_queries_cut_to_length,
    // otherwise something like credit card without last digit can go to log
    if (auto * masker = SensitiveDataMasker::getInstance())
    {
        auto matches = masker->wipeSensitiveData(res);
        if (matches > 0)
        {
            ProfileEvents::increment(ProfileEvents::QueryMaskingRulesMatch, matches);
        }
    }

    res = res.substr(0, context->getSettingsRef().log_queries_cut_to_length);

    return res;
}


/// Log query into text log (not into system table).