Method transformHeader

src/Processors/Transforms/AssignUniqueIdTransform.cpp:28–35

}

Block AssignUniqueIdTransform::transformHeader(Block header, String symbol)
{
    auto type_int = std::make_shared<DataTypeUInt64>();
    MutableColumnPtr column = type_int->createColumn();
    ColumnWithTypeAndName unique{std::move(column), type_int, symbol};
    header.insert(unique);
    return header;
}

AssignUniqueIdTransform::AssignUniqueIdTransform(const Block & header_, String symbol_)
    : ISimpleTransform(header_, transformHeader(header_, symbol_), false), symbol(symbol_)