Package org.apache.spark.sql.connector.expressions

Class Extract

Object

org.apache.spark.sql.internal.connector.ExpressionWithToString

org.apache.spark.sql.connector.expressions.Extract

All Implemented Interfaces:

Serializable, Expression

@Evolving
public class Extract
extends org.apache.spark.sql.internal.connector.ExpressionWithToString

Represent an extract function, which extracts and returns the value of a specified datetime field from a datetime or interval value expression.

The currently supported fields names following the ISO standard:

1. SECOND Since 3.4.0
2. MINUTE Since 3.4.0
3. HOUR Since 3.4.0
4. MONTH Since 3.4.0
5. QUARTER Since 3.4.0
6. YEAR Since 3.4.0
7. DAY_OF_WEEK Since 3.4.0
8. DAY Since 3.4.0
9. DAY_OF_YEAR Since 3.4.0
10. WEEK Since 3.4.0
11. YEAR_OF_WEEK Since 3.4.0

Since:

3.4.0

See Also:

• Serialized Form

Field Summary

Fields inherited from interface org.apache.spark.sql.connector.expressions.Expression

EMPTY_EXPRESSION, EMPTY_NAMED_REFERENCE

Constructor Summary

Constructors

Constructor	Description
Extract(String field, Expression source)

Method Summary

Modifier and Type	Method	Description
Expression[]	children()	Returns an array of the children of this node.
String	field()
Expression	source()

Methods inherited from class org.apache.spark.sql.internal.connector.ExpressionWithToString

describe, references, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

Extract

public Extract(String field,
 Expression source)

Method Details

field

public String field()

source

public Expression source()

children

public Expression[] children()

Description copied from interface: Expression

Returns an array of the children of this node. Children should not change.