Function fillSignColumnsData

src/Databases/MySQL/MaterializeMySQLSyncThread.cpp:366–376

}

static inline void fillSignColumnsData(Block & data, Int8 sign_value, size_t fill_size)
{
    MutableColumnPtr sign_mutable_column = IColumn::mutate(std::move(data.getByPosition(data.columns() - 1).column));

    ColumnInt8::Container & sign_column_data = assert_cast<ColumnInt8 &>(*sign_mutable_column).getData();

    for (size_t index = 0; index < fill_size; ++index)
        sign_column_data.emplace_back(sign_value);

    data.getByPosition(data.columns() - 1).column = std::move(sign_mutable_column);
}

template <bool assert_nullable = false>
static void writeFieldsToColumn(