Function validateAnalyzerSettings

src/Interpreters/executeQuery.cpp:996–1038

}

static void validateAnalyzerSettings(ASTPtr ast, bool context_value)
{
    if (ast->as<ASTSetQuery>())
        return;

    bool top_level = context_value;

    auto field_to_bool = [](const Field & f) -> bool
    {
        if (f.getType() == Field::Types::String)
            return stringToBool(f.safeGet<String>());
        else
            return f.safeGet<bool>();
    };

    std::vector<ASTPtr> nodes_to_process{ ast };
    while (!nodes_to_process.empty())
    {
        auto node = nodes_to_process.back();
        nodes_to_process.pop_back();

        if (auto * set_query = node->as<ASTSetQuery>())
        {
            if (auto * value = set_query->changes.tryGet("allow_experimental_analyzer"))
            {
                if (top_level != field_to_bool(*value))
                    throw Exception(ErrorCodes::INCORRECT_QUERY, "Setting 'allow_experimental_analyzer' is changed in the subquery. Top level value: {}", top_level);
            }

            if (auto * value = set_query->changes.tryGet("enable_analyzer"))
            {
                if (top_level != field_to_bool(*value))
                    throw Exception(ErrorCodes::INCORRECT_QUERY, "Setting 'enable_analyzer' is changed in the subquery. Top level value: {}", top_level);
            }
        }

        for (auto child : node->children)
        {
            if (child)
                nodes_to_process.push_back(std::move(child));
        }
    }
}

class ImplicitTransactionControlExecutor
{