HOUR function

This function is used to calculate the hour of a day from a value of DATE type. Hour value is between 0 and 23.

The function's parameter is an expression of DATE type.

If the parameter contains a value of DATE type, the result of the function is a value of NUMBER type. If the parameter contains a NULL value, the result of the function is also NULL. Other values are invalid and cause the query to end with an error.

See also: Functions of Query Language