Syntax

1. <extraction_function> ::=
     YEAR (<date_or_timestamp_expression>)
   | MONTH ( <date_or_timestamp_expression> )
   | DAY ( <date_or_timestamp_expression> )
   | HOUR ( <time_or_timestamp_expression> )
   | MINUTE ( <time_or_timestamp_expression> )
   | SECOND ( <time_or_timestamp_expression> )
   | MICROSECOND ( <expression> )
   | TIMESTAMP ( <expression>[, <expression ]> )
   | DATE ( <expression> )
   | TIME ( <expression> )