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>)