The ExpressionRewriter performs a set of fixed rewrite rules on the expressions that occur in a SQL statement. More...

Inheritance diagram for duckdb::ExpressionRewriter:

Collaboration diagram for duckdb::ExpressionRewriter:

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Public Member Functions
	ExpressionRewriter (ClientContext &context)

void	VisitOperator (LogicalOperator &op) override

void	VisitExpression (unique_ptr< Expression > *expression) override

Static Public Member Functions
static unique_ptr< Expression >	ConstantOrNull (unique_ptr< Expression > child, Value value)

static unique_ptr< Expression >	ConstantOrNull (vector< unique_ptr< Expression > > children, Value value)

Static Public Member Functions inherited from duckdb::LogicalOperatorVisitor
static void	EnumerateExpressions (LogicalOperator &op, const std::function< void(unique_ptr< Expression > *child)> &callback)

Public Attributes
vector< unique_ptr< Rule > >	rules
	The set of rules as known by the Expression Rewriter.

ClientContext &	context

Static Private Member Functions
static unique_ptr< Expression >	ApplyRules (LogicalOperator &op, const vector< reference< Rule > > &rules, unique_ptr< Expression > expr, bool &changes_made, bool is_root=false)
	Apply a set of rules to a specific expression.

Private Attributes
optional_ptr< LogicalOperator >	op

vector< reference< Rule > >	to_apply_rules

Additional Inherited Members
Protected Member Functions inherited from duckdb::LogicalOperatorVisitor
void	VisitOperatorChildren (LogicalOperator &op)

void	VisitOperatorExpressions (LogicalOperator &op)

void	VisitOperatorWithProjectionMapChildren (LogicalOperator &op)
	Alternatives for VisitOperatorChildren for operators that have a projection map.

void	VisitChildOfOperatorWithProjectionMap (LogicalOperator &child, vector< idx_t > &projection_map)

virtual void	VisitExpressionChildren (Expression &expression)

virtual unique_ptr< Expression >	VisitReplace (BoundAggregateExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundBetweenExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundCaseExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundCastExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundColumnRefExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundComparisonExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundConjunctionExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundConstantExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundDefaultExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundFunctionExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundOperatorExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundReferenceExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundSubqueryExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundParameterExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundWindowExpression &expr, unique_ptr< Expression > *expr_ptr)

virtual unique_ptr< Expression >	VisitReplace (BoundUnnestExpression &expr, unique_ptr< Expression > *expr_ptr)

Detailed Description

The ExpressionRewriter performs a set of fixed rewrite rules on the expressions that occur in a SQL statement.

Constructor & Destructor Documentation

◆ ExpressionRewriter()

duckdb::ExpressionRewriter::ExpressionRewriter ( ClientContext & context )

inlineexplicit

69584 : context(context) {

69585 }

Member Function Documentation

◆ VisitOperator()

void duckdb::ExpressionRewriter::VisitOperator ( LogicalOperator & op )

overridevirtual

Reimplemented from duckdb::LogicalOperatorVisitor.

◆ VisitExpression()

void duckdb::ExpressionRewriter::VisitExpression ( unique_ptr< Expression > * expression )

overridevirtual

Reimplemented from duckdb::LogicalOperatorVisitor.

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

external/duckdb/duckdb.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Static Private Member Functions