void MergeTreePartition::serializeText(const MergeTreeData & storage, WriteBuffer & out, const FormatSettings & format_settings) const
{
size_t key_size = storage.partition_key_sample.columns();
if (key_size == 0)
{
writeCString("tuple()", out);
}
else if (key_size == 1)
{
const DataTypePtr & type = storage.partition_key_sample.getByPosition(0).type;
auto column = type->createColumn();
column->insert(value[0]);
type->serializeAsText(*column, 0, out, format_settings);
}
else
{
DataTypes types;
Columns columns;
for (size_t i = 0; i < key_size; ++i)
{
const auto & type = storage.partition_key_sample.getByPosition(i).type;
types.push_back(type);
auto column = type->createColumn();
column->insert(value[i]);
columns.push_back(std::move(column));
}
DataTypeTuple tuple_type(types);
auto tuple_column = ColumnTuple::create(columns);
tuple_type.serializeText(*tuple_column, 0, out, format_settings);
}
}
DataTypes NamesAndTypesList::getTypes() const
{
DataTypes res;
res.reserve(size());
for (const NameAndTypePair & column : *this)
res.push_back(column.type);
return res;
}