Method allocate

src/QueryPlan/TableWriteStep.cpp:248–255

}

void TableWriteStep::allocate(const ContextPtr & context)
{
    auto storage_id = target->getStorage()->prepareTableWrite(context);
    if (auto * input_target = dynamic_cast<InsertTarget *>(target.get()))
        target = std::make_shared<InsertTarget>(input_target->getStorage(), storage_id, input_target->getColumns(), input_target->getQuery());
    else
        throw Exception("unknown TableWrite::Target", ErrorCodes::LOGICAL_ERROR);
}

void TableWriteStep::Target::toProto(Protos::TableWriteStep::Target & proto) const
{