OmniSciDB  29e35f4d58
TargetInfo.h File Reference
#include "sqldefs.h"
#include "sqltypes.h"
#include "../Analyzer/Analyzer.h"
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Classes

struct  TargetInfo
 

Functions

const Analyzer::AggExprcast_to_agg_expr (const Analyzer::Expr *target_expr)
 
const Analyzer::AggExprcast_to_agg_expr (const std::shared_ptr< Analyzer::Expr > target_expr)
 
bool is_agg_domain_range_equivalent (const SQLAgg &agg_kind)
 
template<class PointerType >
TargetInfo get_target_info (const PointerType target_expr, const bool bigint_count)
 
bool is_distinct_target (const TargetInfo &target_info)
 
bool takes_float_argument (const TargetInfo &target_info)
 

Detailed Description

Author
Alex Suhan alex@.nosp@m.mapd.nosp@m..com

Definition in file TargetInfo.h.

Function Documentation

◆ cast_to_agg_expr() [1/2]

const Analyzer::AggExpr* cast_to_agg_expr ( const Analyzer::Expr target_expr)
inline

Definition at line 30 of file TargetInfo.h.

Referenced by get_target_info().

30  {
31  return dynamic_cast<const Analyzer::AggExpr*>(target_expr);
32 }
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◆ cast_to_agg_expr() [2/2]

const Analyzer::AggExpr* cast_to_agg_expr ( const std::shared_ptr< Analyzer::Expr target_expr)
inline

Definition at line 34 of file TargetInfo.h.

35  {
36  return dynamic_cast<const Analyzer::AggExpr*>(target_expr.get());
37 }

◆ get_target_info()

template<class PointerType >
TargetInfo get_target_info ( const PointerType  target_expr,
const bool  bigint_count 
)
inline

Definition at line 66 of file TargetInfo.h.

References agg_arg(), cast_to_agg_expr(), CHECK, CHECK_EQ, get_logical_type_info(), SQLTypeInfoCore< TYPE_FACET_PACK >::get_notnull(), Analyzer::Expr::get_type_info(), TargetInfo::is_distinct, kAVG, kBIGINT, kCOUNT, kINT, kMIN, and kNULLT.

Referenced by QueryMemoryInitializer::allocateCountDistinctBuffers(), GroupByAndAggregate::codegenCountDistinct(), ColSlotContext::ColSlotContext(), anonymous_namespace{RelAlgExecutor.cpp}::decide_approx_count_distinct_implementation(), Executor::executePlanWithoutGroupBy(), anonymous_namespace{Execute.cpp}::fill_entries_for_empty_input(), get_col_byte_widths(), get_heap_key_slot_index(), Executor::getDeviceTypeForTargets(), GroupByAndAggregate::getKeylessInfo(), anonymous_namespace{GroupByAndAggregate.cpp}::has_count_distinct(), init_agg_val_vec(), QueryMemoryInitializer::initColumnarGroups(), GroupByAndAggregate::initCountDistinctDescriptors(), TargetExprCodegenBuilder::operator()(), Executor::reduceMultiDeviceResults(), Executor::resultsUnion(), and target_exprs_to_infos().

67  {
68  const auto agg_expr = cast_to_agg_expr(target_expr);
69  bool notnull = target_expr->get_type_info().get_notnull();
70  if (!agg_expr) {
71  auto target_ti = target_expr ? get_logical_type_info(target_expr->get_type_info())
72  : SQLTypeInfo(kBIGINT, notnull);
73  return {false, kMIN, target_ti, SQLTypeInfo(kNULLT, false), false, false};
74  }
75  const auto agg_type = agg_expr->get_aggtype();
76  const auto agg_arg = agg_expr->get_arg();
77  if (!agg_arg) {
78  CHECK_EQ(kCOUNT, agg_type);
79  CHECK(!agg_expr->get_is_distinct());
80  return {true,
81  kCOUNT,
82  SQLTypeInfo(bigint_count ? kBIGINT : kINT, notnull),
83  SQLTypeInfo(kNULLT, false),
84  false,
85  false};
86  }
87 
88  const auto& agg_arg_ti = agg_arg->get_type_info();
89  bool is_distinct{false};
90  if (agg_expr->get_aggtype() == kCOUNT) {
91  is_distinct = agg_expr->get_is_distinct();
92  }
93 
94  if (agg_type == kAVG) {
95  // Upcast the target type for AVG, so that the integer argument does not overflow the
96  // sum
97  return {true,
98  agg_expr->get_aggtype(),
99  agg_arg_ti.is_integer() ? SQLTypeInfo(kBIGINT, agg_arg_ti.get_notnull())
100  : agg_arg_ti,
101  agg_arg_ti,
102  !agg_arg_ti.get_notnull(),
103  is_distinct};
104  }
105 
106  return {
107  true,
108  agg_expr->get_aggtype(),
109  agg_type == kCOUNT
110  ? SQLTypeInfo((is_distinct || bigint_count) ? kBIGINT : kINT, notnull)
111  : agg_expr->get_type_info(),
112  agg_arg_ti,
113  agg_type == kCOUNT && agg_arg_ti.is_varlen() ? false : !agg_arg_ti.get_notnull(),
114  is_distinct};
115 }
const Analyzer::Expr * agg_arg(const Analyzer::Expr *expr)
#define CHECK_EQ(x, y)
Definition: Logger.h:201
HOST DEVICE bool get_notnull() const
Definition: sqltypes.h:333
SQLTypeInfo get_logical_type_info(const SQLTypeInfo &type_info)
Definition: sqltypes.h:869
Definition: sqldefs.h:73
SQLTypeInfoCore< ArrayContextTypeSizer, ExecutorTypePackaging, DateTimeFacilities > SQLTypeInfo
Definition: sqltypes.h:852
const Analyzer::AggExpr * cast_to_agg_expr(const Analyzer::Expr *target_expr)
Definition: TargetInfo.h:30
Definition: sqldefs.h:76
const SQLTypeInfo & get_type_info() const
Definition: Analyzer.h:78
#define CHECK(condition)
Definition: Logger.h:193
Definition: sqltypes.h:48
Definition: sqldefs.h:72
bool is_distinct(const size_t input_idx, const RelAlgNode *node)
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◆ is_agg_domain_range_equivalent()

bool is_agg_domain_range_equivalent ( const SQLAgg agg_kind)
inline

Returns true if the aggregate function always returns a value in the domain of the argument. Returns false otherwise.

Definition at line 52 of file TargetInfo.h.

References kMAX, kMIN, kSAMPLE, and kSINGLE_VALUE.

Referenced by TargetExprCodegen::codegen(), and get_compact_type().

52  {
53  switch (agg_kind) {
54  case kMIN:
55  case kMAX:
56  case kSINGLE_VALUE:
57  case kSAMPLE:
58  return true;
59  default:
60  break;
61  }
62  return false;
63 }
Definition: sqldefs.h:73
Definition: sqldefs.h:74
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◆ is_distinct_target()

◆ takes_float_argument()

bool takes_float_argument ( const TargetInfo target_info)
inline

Definition at line 121 of file TargetInfo.h.

References TargetInfo::agg_arg_type, TargetInfo::agg_kind, SQLTypeInfoCore< TYPE_FACET_PACK >::get_type(), TargetInfo::is_agg, kAVG, kFLOAT, kMAX, kMIN, kSINGLE_VALUE, and kSUM.

Referenced by TargetExprCodegen::codegen(), anonymous_namespace{Execute.cpp}::fill_entries_for_empty_input(), GroupByAndAggregate::getKeylessInfo(), anonymous_namespace{OutputBufferInitialization.cpp}::init_agg_val_vec(), anonymous_namespace{ResultSetIteration.cpp}::make_avg_target_value(), ResultSet::ResultSetComparator< BUFFER_ITERATOR_TYPE >::operator()(), AggregateReductionEgress< META_TYPE_CLASS >::operator()(), ResultSetReductionJIT::reduceOneSlot(), ResultSetStorage::reduceOneSlot(), ResultSetStorage::reduceOneSlotSingleValue(), ResultSetStorage::reduceSingleRow(), and ResultSetStorage::ResultSetStorage().

121  {
122  return target_info.is_agg &&
123  (target_info.agg_kind == kAVG || target_info.agg_kind == kSUM ||
124  target_info.agg_kind == kMIN || target_info.agg_kind == kMAX ||
125  target_info.agg_kind == kSINGLE_VALUE) &&
126  target_info.agg_arg_type.get_type() == kFLOAT;
127 }
HOST DEVICE SQLTypes get_type() const
Definition: sqltypes.h:326
SQLTypeInfo agg_arg_type
Definition: TargetInfo.h:43
Definition: sqldefs.h:73
bool is_agg
Definition: TargetInfo.h:40
Definition: sqldefs.h:75
SQLAgg agg_kind
Definition: TargetInfo.h:41
Definition: sqldefs.h:74
Definition: sqldefs.h:72
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