Function matchTablePrefix

src/Processors/QueryPlan/QueryPlanFormat.cpp:44–54

Matches `__table .` at position pos, returns the position after the dot or 0 on mismatch.

    /// Matches `__table<digits>.` at position pos, returns the position after the dot or 0 on mismatch.
    static size_t matchTablePrefix(std::string_view name, size_t pos)
    {
        if (!name.substr(pos).starts_with(TABLE_PREFIX))
            return 0;
        size_t j = pos + TABLE_PREFIX.size();
        while (j < name.size() && std::isdigit(static_cast<unsigned char>(name[j])))
            ++j;
        if (j > pos + TABLE_PREFIX.size() && j < name.size() && name[j] == '.')
            return j + 1;
        return 0;
    }

    String trimColumnIdentifier(std::string_view name)
    {