Package org.apache.drill.common.expression

Logical expression tree representation.

See: Description

Interface Summary

Interface	Description
ErrorCollector
LogicalExpression
OutputTypeDeterminer

Class Summary

Class	Description
AnyValueExpression
BooleanOperator
CastExpression
ConvertExpression
ErrorCollectorImpl
ExpressionFunction
ExpressionPosition
ExpressionStringBuilder
FieldReference
FieldReference.De
FieldReference.Se
FunctionCall
FunctionCallFactory
FunctionHolderExpression	Represents an actual call (a reference) to a declared function.
IfExpression
IfExpression.Builder
IfExpression.IfCondition
LogicalExpression.De
LogicalExpression.Se
LogicalExpressionBase
MajorTypeInLogicalExpression	MajorTypeInLogicalExpression is a LogicalExpression, which wraps a given @{TypeProtos.MajorType}
NullExpression
OutputTypeDeterminer.FixedType
OutputTypeDeterminer.NullIfNullType
OutputTypeDeterminer.SameAsAnySoft
OutputTypeDeterminer.SameAsFirstInput
PathSegment	Used to represent path to nested field within schema as a chain of path segments.
PathSegment.ArraySegment
PathSegment.NameSegment
SchemaPath	This is the path for the column in the table
SchemaPath.De
TypedFieldExpr
TypedNullConstant
ValidationError
ValueExpressions
ValueExpressions.BooleanExpression
ValueExpressions.DateExpression
ValueExpressions.Decimal18Expression
ValueExpressions.Decimal28Expression
ValueExpressions.Decimal38Expression
ValueExpressions.Decimal9Expression
ValueExpressions.DoubleExpression
ValueExpressions.FloatExpression
ValueExpressions.IntervalDayExpression
ValueExpressions.IntervalYearExpression
ValueExpressions.IntExpression
ValueExpressions.LongExpression
ValueExpressions.ParameterExpression	Identifies method parameter based on given name and type.
ValueExpressions.QuotedString
ValueExpressions.TimeExpression
ValueExpressions.TimeStampExpression
ValueExpressions.ValueExpression<V>
ValueExpressions.VarDecimalExpression

Annotation Types Summary

Annotation Type	Description
FunctionName

Package org.apache.drill.common.expression Description

Logical expression tree representation. Drill manages expressions provided in many different parts of SQL queries. This includes scalar expressions in select, filter and join conditions, as well as aggregate and window functions. These expressions are represented logically as ASTs during planning. The classes defined here provide the different nodes in the expression tree, as well as utilities for building and manipulating expressions during parsing and planning.