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RelLogicalUnion Class Reference

#include <RelAlgDagBuilder.h>

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Public Member Functions

 RelLogicalUnion (RelAlgInputs, bool is_all)
 
std::shared_ptr< RelAlgNodedeepCopy () const override
 
size_t size () const override
 
std::string toString (RelRexToStringConfig config=RelRexToStringConfig::defaults()) const override
 
size_t toHash () const override
 
std::string getFieldName (const size_t i) const
 
bool isAll () const
 
void checkForMatchingMetaInfoTypes () const
 
RexScalar const * copyAndRedirectSource (RexScalar const *, size_t input_idx) const
 
- Public Member Functions inherited from RelAlgNode
 RelAlgNode (RelAlgInputs inputs={})
 
virtual ~RelAlgNode ()
 
void resetQueryExecutionState ()
 
void setContextData (const RaExecutionDesc *context_data) const
 
void setOutputMetainfo (const std::vector< TargetMetaInfo > &targets_metainfo) const
 
void setQueryPlanDag (const std::string &extracted_query_plan_dag) const
 
std::string getQueryPlanDag () const
 
size_t getQueryPlanDagHash () const
 
const std::vector
< TargetMetaInfo > & 
getOutputMetainfo () const
 
unsigned getId () const
 
void setIdInPlanTree (size_t id) const
 
std::optional< size_t > getIdInPlanTree () const
 
bool hasContextData () const
 
const RaExecutionDescgetContextData () const
 
const size_t inputCount () const
 
const RelAlgNodegetInput (const size_t idx) const
 
std::shared_ptr< const RelAlgNodegetAndOwnInput (const size_t idx) const
 
void addManagedInput (std::shared_ptr< const RelAlgNode > input)
 
bool hasInput (const RelAlgNode *needle) const
 
virtual void replaceInput (std::shared_ptr< const RelAlgNode > old_input, std::shared_ptr< const RelAlgNode > input)
 
void setRelNodeDagId (const size_t id) const
 
size_t getRelNodeDagId () const
 
bool isNop () const
 
void markAsNop ()
 
void clearContextData () const
 

Public Attributes

std::vector< std::shared_ptr
< const RexScalar > > 
scalar_exprs_
 

Private Attributes

bool const is_all_
 

Additional Inherited Members

- Static Public Member Functions inherited from RelAlgNode
static void resetRelAlgFirstId () noexcept
 
- Protected Attributes inherited from RelAlgNode
RelAlgInputs inputs_
 
const unsigned id_
 
std::optional< size_t > id_in_plan_tree_
 
std::optional< size_t > hash_
 

Detailed Description

Definition at line 2224 of file RelAlgDagBuilder.h.

Constructor & Destructor Documentation

RelLogicalUnion::RelLogicalUnion ( RelAlgInputs  inputs,
bool  is_all 
)

Definition at line 809 of file RelAlgDagBuilder.cpp.

References CHECK_EQ, g_enable_union, RelAlgNode::inputs_, and is_all_.

Referenced by toHash().

810  : RelAlgNode(std::move(inputs)), is_all_(is_all) {
811  if (!g_enable_union) {
812  throw QueryNotSupported(
813  "The DEPRECATED enable-union option is set to off. Please remove this option as "
814  "it may be disabled in the future.");
815  }
816  CHECK_EQ(2u, inputs_.size());
817  if (!is_all_) {
818  throw QueryNotSupported("UNION without ALL is not supported yet.");
819  }
820 }
#define CHECK_EQ(x, y)
Definition: Logger.h:231
RelAlgNode(RelAlgInputs inputs={})
bool g_enable_union
RelAlgInputs inputs_

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Member Function Documentation

void RelLogicalUnion::checkForMatchingMetaInfoTypes ( ) const

Definition at line 857 of file RelAlgDagBuilder.cpp.

References RelAlgNode::inputs_, SQLTypeInfo::is_dict_encoded_string(), SQLTypeInfo::to_string(), and VLOG.

Referenced by RelAlgExecutor::executeUnion().

857  {
858  std::vector<TargetMetaInfo> const& tmis0 = inputs_[0]->getOutputMetainfo();
859  std::vector<TargetMetaInfo> const& tmis1 = inputs_[1]->getOutputMetainfo();
860  if (tmis0.size() != tmis1.size()) {
861  VLOG(2) << "tmis0.size() = " << tmis0.size() << " != " << tmis1.size()
862  << " = tmis1.size()";
863  throw std::runtime_error("Subqueries of a UNION must have matching data types.");
864  }
865  for (size_t i = 0; i < tmis0.size(); ++i) {
866  if (tmis0[i].get_type_info() != tmis1[i].get_type_info()) {
867  SQLTypeInfo const& ti0 = tmis0[i].get_type_info();
868  SQLTypeInfo const& ti1 = tmis1[i].get_type_info();
869  VLOG(2) << "Types do not match for UNION:\n tmis0[" << i
870  << "].get_type_info().to_string() = " << ti0.to_string() << "\n tmis1["
871  << i << "].get_type_info().to_string() = " << ti1.to_string();
872  // The only permitted difference is when both columns are dictionary-encoded.
873  if (!(ti0.is_dict_encoded_string() && ti1.is_dict_encoded_string())) {
874  throw std::runtime_error(
875  "Subqueries of a UNION must have the exact same data types.");
876  }
877  }
878  }
879 }
std::string to_string() const
Definition: sqltypes.h:483
bool is_dict_encoded_string() const
Definition: sqltypes.h:548
#define VLOG(n)
Definition: Logger.h:317
RelAlgInputs inputs_

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RexScalar const * RelLogicalUnion::copyAndRedirectSource ( RexScalar const *  rex_scalar,
size_t  input_idx 
) const

Definition at line 882 of file RelAlgDagBuilder.cpp.

References RelAlgNode::getInput(), scalar_exprs_, and RexInput::setSourceNode().

883  {
884  if (auto const* rex_input_ptr = dynamic_cast<RexInput const*>(rex_scalar)) {
885  RexInput rex_input(*rex_input_ptr);
886  rex_input.setSourceNode(getInput(input_idx));
887  scalar_exprs_.emplace_back(std::make_shared<RexInput const>(std::move(rex_input)));
888  return scalar_exprs_.back().get();
889  }
890  return rex_scalar;
891 }
std::vector< std::shared_ptr< const RexScalar > > scalar_exprs_
const RelAlgNode * getInput(const size_t idx) const

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std::shared_ptr<RelAlgNode> RelLogicalUnion::deepCopy ( ) const
inlineoverridevirtual

Implements RelAlgNode.

Definition at line 2227 of file RelAlgDagBuilder.h.

2227  {
2228  return std::make_shared<RelLogicalUnion>(*this);
2229  }
std::string RelLogicalUnion::getFieldName ( const size_t  i) const

Definition at line 838 of file RelAlgDagBuilder.cpp.

References RelAlgNode::inputs_, toString(), and UNREACHABLE.

838  {
839  if (auto const* input = dynamic_cast<RelCompound const*>(inputs_[0].get())) {
840  return input->getFieldName(i);
841  } else if (auto const* input = dynamic_cast<RelProject const*>(inputs_[0].get())) {
842  return input->getFieldName(i);
843  } else if (auto const* input = dynamic_cast<RelLogicalUnion const*>(inputs_[0].get())) {
844  return input->getFieldName(i);
845  } else if (auto const* input = dynamic_cast<RelAggregate const*>(inputs_[0].get())) {
846  return input->getFieldName(i);
847  } else if (auto const* input = dynamic_cast<RelScan const*>(inputs_[0].get())) {
848  return input->getFieldName(i);
849  } else if (auto const* input =
850  dynamic_cast<RelTableFunction const*>(inputs_[0].get())) {
851  return input->getFieldName(i);
852  }
853  UNREACHABLE() << "Unhandled input type: " << ::toString(inputs_.front());
854  return {};
855 }
#define UNREACHABLE()
Definition: Logger.h:267
std::string toString(RelRexToStringConfig config=RelRexToStringConfig::defaults()) const override
RelAlgInputs inputs_

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bool RelLogicalUnion::isAll ( ) const
inline

Definition at line 2237 of file RelAlgDagBuilder.h.

References is_all_.

Referenced by RelAlgExecutor::createUnionWorkUnit(), and RelAlgExecutor::executeUnion().

2237 { return is_all_; }

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size_t RelLogicalUnion::size ( ) const
overridevirtual

Implements RelAlgNode.

Definition at line 822 of file RelAlgDagBuilder.cpp.

References RelAlgNode::inputs_.

822  {
823  return inputs_.front()->size();
824 }
RelAlgInputs inputs_
size_t RelLogicalUnion::toHash ( ) const
overridevirtual

Implements RelAlgNode.

Definition at line 830 of file RelAlgDagBuilder.cpp.

References RelAlgNode::hash_, is_all_, and RelLogicalUnion().

830  {
831  if (!hash_) {
832  hash_ = typeid(RelLogicalUnion).hash_code();
833  boost::hash_combine(*hash_, is_all_);
834  }
835  return *hash_;
836 }
std::optional< size_t > hash_
RelLogicalUnion(RelAlgInputs, bool is_all)

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std::string RelLogicalUnion::toString ( RelRexToStringConfig  config = RelRexToStringConfig::defaults()) const
overridevirtual

Implements RelAlgNode.

Definition at line 826 of file RelAlgDagBuilder.cpp.

References cat(), is_all_, and typeName().

Referenced by getFieldName().

826  {
827  return cat(::typeName(this), "(is_all(", is_all_, "))");
828 }
std::string cat(Ts &&...args)
std::string typeName(const T *v)
Definition: toString.h:102

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Member Data Documentation

bool const RelLogicalUnion::is_all_
private

Definition at line 2246 of file RelAlgDagBuilder.h.

Referenced by isAll(), RelLogicalUnion(), toHash(), and toString().

std::vector<std::shared_ptr<const RexScalar> > RelLogicalUnion::scalar_exprs_
mutable

Definition at line 2243 of file RelAlgDagBuilder.h.

Referenced by copyAndRedirectSource().


The documentation for this class was generated from the following files: