1//===----------------------------------------------------------------------===//
2// DuckDB
3//
4// duckdb/planner/expression/bound_subquery_expression.hpp
5//
6//
7//===----------------------------------------------------------------------===//
8
9#pragma once
10
11#include "duckdb/common/enums/subquery_type.hpp"
12#include "duckdb/planner/binder.hpp"
13#include "duckdb/planner/bound_query_node.hpp"
14#include "duckdb/planner/expression.hpp"
15
16namespace duckdb {
17
18class BoundSubqueryExpression : public Expression {
19public:
20 static constexpr const ExpressionClass TYPE = ExpressionClass::BOUND_SUBQUERY;
21
22public:
23 explicit BoundSubqueryExpression(LogicalType return_type);
24
25 bool IsCorrelated() {
26 return binder->correlated_columns.size() > 0;
27 }
28
29 //! The binder used to bind the subquery node
30 shared_ptr<Binder> binder;
31 //! The bound subquery node
32 unique_ptr<BoundQueryNode> subquery;
33 //! The subquery type
34 SubqueryType subquery_type;
35 //! the child expression to compare with (in case of IN, ANY, ALL operators)
36 unique_ptr<Expression> child;
37 //! The comparison type of the child expression with the subquery (in case of ANY, ALL operators)
38 ExpressionType comparison_type;
39 //! The LogicalType of the subquery result. Only used for ANY expressions.
40 LogicalType child_type;
41 //! The target LogicalType of the subquery result (i.e. to which type it should be casted, if child_type <>
42 //! child_target). Only used for ANY expressions.
43 LogicalType child_target;
44
45public:
46 bool HasSubquery() const override {
47 return true;
48 }
49 bool IsScalar() const override {
50 return false;
51 }
52 bool IsFoldable() const override {
53 return false;
54 }
55
56 string ToString() const override;
57
58 bool Equals(const BaseExpression &other) const override;
59
60 unique_ptr<Expression> Copy() override;
61
62 bool PropagatesNullValues() const override;
63
64 void Serialize(FieldWriter &writer) const override;
65 static unique_ptr<Expression> Deserialize(ExpressionDeserializationState &state, FieldReader &reader);
66};
67} // namespace duckdb
68