org.apache.calcite.sql2rel (Calcite Core 1.16.0 API)

Interface Summary
Interface	Description
AuxiliaryConverter	Converts an expression for a group window function (e.g.
InitializerContext	Provides context for `InitializerExpressionFactory` methods.
InitializerExpressionFactory	InitializerExpressionFactory supplies default values for INSERT, UPDATE, and NEW.
RelStructuredTypeFlattener.SelfFlatteningRel	Mix-in interface for relational expressions that know how to flatten themselves.
SqlNodeToRexConverter	Converts expressions from `SqlNode` to `RexNode`.
SqlRexContext	Contains the context necessary for a `SqlRexConvertlet` to convert a `SqlNode` expression into a `RexNode`.
SqlRexConvertlet	Thunk which converts a `SqlNode` expression into a `RexNode` expression.
SqlRexConvertletTable	Collection of `SqlRexConvertlet`s.
SqlToRelConverter.Config	Interface to define the configuration for a SqlToRelConverter.
SubQueryConverter	SubQueryConverter provides the interface for classes that convert sub-queries into equivalent expressions.

Class Summary
Class	Description
AuxiliaryConverter.Impl	Simple implementation of `AuxiliaryConverter`.
CorrelationReferenceFinder	Shuttle that finds references to a given `CorrelationId` within a tree of `RelNode`s.
CorrelationReferenceFinder.MyRexVisitor	Replaces alternative names of correlation variable to its canonical name.
DeduplicateCorrelateVariables	Rewrites relations to ensure the same correlation is referenced by the same correlation variable.
DeduplicateCorrelateVariables.DeduplicateCorrelateVariablesShuttle	Replaces alternative names of correlation variable to its canonical name.
NullInitializerExpressionFactory	An implementation of `InitializerExpressionFactory` that always supplies NULL.
ReflectiveConvertletTable	Implementation of `SqlRexConvertletTable` which uses reflection to call any method of the form `public RexNode convertXxx(ConvertletContext, SqlNode)` or `public RexNode convertXxx(ConvertletContext, SqlOperator, SqlCall)`.
RelDecorrelator	RelDecorrelator replaces all correlated expressions (corExp) in a relational expression (RelNode) tree with non-correlated expressions that are produced from joining the RelNode that produces the corExp with the RelNode that references it.
RelDecorrelator.CorDef	A correlation and a field.
RelDecorrelator.CorelMap	A map of the locations of `LogicalCorrelate` in a tree of `RelNode`s.
RelDecorrelator.CorelMapBuilder	Builds a `RelDecorrelator.CorelMap`.
RelDecorrelator.CorRef	A unique reference to a correlation field.
RelDecorrelator.DecorrelateRexShuttle	Shuttle that decorrelates.
RelDecorrelator.Frame	Frame describing the relational expression after decorrelation and where to find the output fields and correlation variables among its output fields.
RelFieldTrimmer	Transformer that walks over a tree of relational expressions, replacing each `RelNode` with a 'slimmed down' relational expression that projects only the columns required by its consumer.
RelFieldTrimmer.TrimResult	Result of an attempt to trim columns from a relational expression.
RelStructuredTypeFlattener	RelStructuredTypeFlattener removes all structured types from a tree of relational expressions.
SqlNodeToRexConverterImpl	Standard implementation of `SqlNodeToRexConverter`.
SqlToRelConverter	Converts a SQL parse tree (consisting of `SqlNode` objects) into a relational algebra expression (consisting of `RelNode` objects).
SqlToRelConverter.AggregateFinder	Visitor that collects all aggregate functions in a `SqlNode` tree.
SqlToRelConverter.ConfigBuilder	Builder for a `SqlToRelConverter.Config`.
SqlToRelConverter.ConfigImpl	Implementation of `SqlToRelConverter.Config`.
SqlToRelConverter.CorrelationUse	Use of a row as a correlating variable by a given relational expression.
SqlToRelConverter.DeferredLookup	Deferred lookup.
SqlToRelConverter.LookupContext	Context to find a relational expression to a field offset.
SqlToRelConverter.SubQuery	A sub-query, whether it needs to be translated using 2- or 3-valued logic.
StandardConvertletTable	Standard implementation of `SqlRexConvertletTable`.
StandardConvertletTable.AvgVarianceConvertlet	Convertlet that handles `AVG` and `VARIANCE` windowed aggregate functions.
StandardConvertletTable.GreatestConvertlet	Convertlet that converts `GREATEST` and `LEAST`.
StandardConvertletTable.TimestampAddConvertlet	Convertlet that handles the `TIMESTAMPADD` function.
StandardConvertletTable.TimestampDiffConvertlet	Convertlet that handles the `TIMESTAMPDIFF` function.
StandardConvertletTable.TrimConvertlet	Convertlet that converts `LTRIM` and `RTRIM` to `TRIM`.

Package org.apache.calcite.sql2rel Description

Translates a SQL parse tree to relational expression.