Package io.delta.kernel.expressions
Class Predicate
Object
io.delta.kernel.expressions.ScalarExpression
io.delta.kernel.expressions.Predicate
- All Implemented Interfaces:
Expression
- Direct Known Subclasses:
AlwaysFalse,AlwaysTrue,And,Or
Defines predicate scalar expression which is an extension of
ScalarExpression that
evaluates to true, false, or null for each input row.
Currently, implementations of ExpressionHandler requires support for at least the
following scalar expressions.
- Name:
=- SQL semantic:
expr1 = expr2 - Since version: 3.0.0
- SQL semantic:
- Name:
<- SQL semantic:
expr1 < expr2 - Since version: 3.0.0
- SQL semantic:
- Name:
<=- SQL semantic:
expr1 <= expr2 - Since version: 3.0.0
- SQL semantic:
- Name:
>- SQL semantic:
expr1 > expr2 - Since version: 3.0.0
- SQL semantic:
- Name:
>=- SQL semantic:
expr1 >= expr2 - Since version: 3.0.0
- SQL semantic:
- Name:
ALWAYS_TRUE- SQL semantic:
Constant expression whose value is `true` - Since version: 3.0.0
- SQL semantic:
- Name:
ALWAYS_FALSE- SQL semantic:
Constant expression whose value is `false` - Since version: 3.0.0
- SQL semantic:
- Name:
AND- SQL semantic:
expr1 AND expr2 - Since version: 3.0.0
- SQL semantic:
- Name:
OR- SQL semantic:
expr1 OR expr2 - Since version: 3.0.0
- SQL semantic:
- Name:
NOT- SQL semantic:
NOT expr - Since version: 3.1.0
- SQL semantic:
- Name:
IS_NOT_NULL- SQL semantic:
expr IS NOT NULL - Since version: 3.1.0
- SQL semantic:
- Name:
IS_NULL- SQL semantic:
expr IS NULL - Since version: 3.2.0
- SQL semantic:
- Name:
LIKE- SQL semantic:
expr LIKE expr - Since version: 3.3.0
- SQL semantic:
- Name:
IS NOT DISTINCT FROM- SQL semantic:
expr1 IS NOT DISTINCT FROM expr2 - Since version: 3.3.0
- SQL semantic:
- Name:
STARTS_WITH- SQL semantic:
expr STARTS_WITH expr - Since version: 3.4.0
- SQL semantic:
- Since:
- 3.0.0
-
Constructor Summary
ConstructorsConstructorDescriptionPredicate(String name, Expression child) Constructor for a unary Predicate expressionPredicate(String name, Expression left, Expression right) Constructor for a binary Predicate expressionPredicate(String name, List<Expression> children) -
Method Summary
Methods inherited from class io.delta.kernel.expressions.ScalarExpression
getChildren, getName
-
Constructor Details
-
Predicate
-
Predicate
Constructor for a unary Predicate expression -
Predicate
Constructor for a binary Predicate expression
-
-
Method Details
-
toString
- Overrides:
toStringin classScalarExpression
-