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EXTRACT

Retrieves subfields such as year or hour from date/time values.

Syntax 

EXTRACT(<field> FROM <source>)
Parameter Description
<field> Supported fields: DAY, DOW, MONTH, WEEK, WEEKISO, QUARTER, YEAR, HOUR, MINUTE, SECOND, EPOCH
<source> A value expression of type timestamp.

Example

This example below extracts the year from the timestamp. The string date first need to be transformed to TIMESTAMP type using the CAST function.

SELECT
	EXTRACT(
		YEAR
		FROM
			CAST('2020-01-01 10:00:00' AS TIMESTAMP)
	);

Returns: 2020