java.lang.Object
- io.prestosql.sql.tree.Node
- - io.prestosql.sql.tree.Expression
  - - io.prestosql.sql.tree.NullIfExpression

```
public class NullIfExpression
extends Expression
```
NULLIF(V1,V2): CASE WHEN V1=V2 THEN NULL ELSE V1 END

Constructors
Constructor	Description
`NullIfExpression(Expression first, Expression second)`
`NullIfExpression(NodeLocation location, Expression first, Expression second)`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`<R,C> R`	`accept(AstVisitor<R,C> visitor, C context)`	Accessible for `AstVisitor`, use `AstVisitor.process(Node, Object)` instead.
`boolean`	`equals(java.lang.Object o)`
`java.util.List<Node>`	`getChildren()`
`Expression`	`getFirst()`
`Expression`	`getSecond()`
`int`	`hashCode()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

public NullIfExpression(Expression first,
                        Expression second)

public NullIfExpression(NodeLocation location,
                        Expression first,
                        Expression second)

Class NullIfExpression