Function parseMapNameFromImplicitColName

src/DataTypes/MapHelpers.cpp:236–246

}

String parseMapNameFromImplicitColName(const String & implicit_column_name)
{
    if (!startsWith(implicit_column_name, getMapSeparator()))
        throw Exception(ErrorCodes::INVALID_IMPLICIT_COLUMN_NAME, "Invalid implicit column name: {}", implicit_column_name);

    /// Due to map column name meets the constraint in MergeTreeMetaBase::checkColumnsValidity, so we can find second separator directly.
    auto location = implicit_column_name.find(getMapSeparator(), getMapSeparator().size());
    if (location == String::npos)
        throw Exception(ErrorCodes::INVALID_IMPLICIT_COLUMN_NAME, "Invalid implicit column name: {}", implicit_column_name);
    return implicit_column_name.substr(getMapSeparator().size(), location - getMapSeparator().size());
}

String parseKeyNameFromImplicitColName(const String & implicit_col, const String & map_col)
{