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#include <Analyzer/SetUtils.h>
#include <Core/Block.h>
#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypeTuple.h>
#include <DataTypes/DataTypeLowCardinality.h>
#include <Interpreters/convertFieldToType.h>
#include <Interpreters/Set.h>
namespace DB
{
namespace ErrorCodes
{
extern const int INCORRECT_ELEMENT_OF_SET;
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
}
namespace
{
size_t getCompoundTypeDepth(const IDataType & type)
{
size_t result = 0;
const IDataType * current_type = &type;
while (true)
{
WhichDataType which_type(*current_type);
if (which_type.isArray())
{
current_type = assert_cast<const DataTypeArray &>(*current_type).getNestedType().get();
++result;
}
else if (which_type.isTuple())
{
const auto & tuple_elements = assert_cast<const DataTypeTuple &>(*current_type).getElements();
if (!tuple_elements.empty())
current_type = tuple_elements.at(0).get();
++result;
}
else
{
break;
}
}
return result;
}
template <typename Collection>
Block createBlockFromCollection(const Collection & collection, const DataTypes & block_types, bool transform_null_in)
{
size_t columns_size = block_types.size();
MutableColumns columns(columns_size);
for (size_t i = 0; i < columns_size; ++i)
{
columns[i] = block_types[i]->createColumn();
columns[i]->reserve(collection.size());
}
Row tuple_values;
for (const auto & value : collection)
{
if (columns_size == 1)
{
auto field = convertFieldToTypeStrict(value, *block_types[0]);
if (!field)
continue;
bool need_insert_null = transform_null_in && block_types[0]->isNullable();
if (!field->isNull() || need_insert_null)
columns[0]->insert(*field);
continue;
}
if (value.getType() != Field::Types::Tuple)
throw Exception(ErrorCodes::INCORRECT_ELEMENT_OF_SET,
"Invalid type in set. Expected tuple, got {}",
value.getTypeName());
const auto & tuple = value.template get<const Tuple &>();
size_t tuple_size = tuple.size();
if (tuple_size != columns_size)
throw Exception(ErrorCodes::INCORRECT_ELEMENT_OF_SET,
"Incorrect size of tuple in set: {} instead of {}",
tuple_size,
columns_size);
if (tuple_values.empty())
tuple_values.resize(tuple_size);
size_t i = 0;
for (; i < tuple_size; ++i)
{
auto converted_field = convertFieldToTypeStrict(tuple[i], *block_types[i]);
if (!converted_field)
break;
tuple_values[i] = std::move(*converted_field);
bool need_insert_null = transform_null_in && block_types[i]->isNullable();
if (tuple_values[i].isNull() && !need_insert_null)
break;
}
if (i == tuple_size)
for (i = 0; i < tuple_size; ++i)
columns[i]->insert(tuple_values[i]);
}
Block res;
for (size_t i = 0; i < columns_size; ++i)
res.insert(ColumnWithTypeAndName{std::move(columns[i]), block_types[i], "argument_" + toString(i)});
return res;
}
}
Block getSetElementsForConstantValue(const DataTypePtr & expression_type, const Field & value, const DataTypePtr & value_type, bool transform_null_in)
{
DataTypes set_element_types = {expression_type};
const auto * lhs_tuple_type = typeid_cast<const DataTypeTuple *>(expression_type.get());
if (lhs_tuple_type && lhs_tuple_type->getElements().size() != 1)
set_element_types = lhs_tuple_type->getElements();
for (auto & set_element_type : set_element_types)
{
if (const auto * set_element_low_cardinality_type = typeid_cast<const DataTypeLowCardinality *>(set_element_type.get()))
set_element_type = set_element_low_cardinality_type->getDictionaryType();
}
size_t lhs_type_depth = getCompoundTypeDepth(*expression_type);
size_t rhs_type_depth = getCompoundTypeDepth(*value_type);
Block result_block;
if (lhs_type_depth == rhs_type_depth)
{
/// 1 in 1; (1, 2) in (1, 2); identity(tuple(tuple(tuple(1)))) in tuple(tuple(tuple(1))); etc.
Array array{value};
result_block = createBlockFromCollection(array, set_element_types, transform_null_in);
}
else if (lhs_type_depth + 1 == rhs_type_depth)
{
/// 1 in (1, 2); (1, 2) in ((1, 2), (3, 4))
WhichDataType rhs_which_type(value_type);
if (rhs_which_type.isArray())
result_block = createBlockFromCollection(value.get<const Array &>(), set_element_types, transform_null_in);
else if (rhs_which_type.isTuple())
result_block = createBlockFromCollection(value.get<const Tuple &>(), set_element_types, transform_null_in);
else
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
"Unsupported type at the right-side of IN. Expected Array or Tuple. Actual {}",
value_type->getName());
}
else
{
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
"Unsupported types for IN. First argument type {}. Second argument type {}",
expression_type->getName(),
value_type->getName());
}
return result_block;
}
}
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