Package org.apache.calcite.sql2rel

Translates a SQL parse tree to relational expression.

See: Description

Interface Summary

Interface	Description
DefaultValueFactory	DefaultValueFactory 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 SqlRexConvertlets.
SubqueryConverter	SubqueryConverter provides the interface for classes that convert subqueries into equivalent expressions.

Class Summary

Class	Description
DeduplicateCorrelateVariables	Rewrites relations to ensure the same correlation is referenced by the same correlation variable.
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.
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).
StandardConvertletTable	Standard implementation of SqlRexConvertletTable.

Package org.apache.calcite.sql2rel Description

Translates a SQL parse tree to relational expression.