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HOUR/MINUTE/SECOND(t) 

HOUR(t), MINUTE(t), and SECOND(t) are functions ( extraction) that extract the hours, minutes, or seconds from the specified time or timestamp value.

t: time_or_timestamp_expression

 

Result of the function

HOUR(t), MINUTE(t), or SECOND(t)

Numeric value (hours, minutes, and seconds)

t is NULL value

NULL value

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