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This graphic is explained in the accompanying text Date and Time Calculations Locate the document in the library structure

To facilitate the calculation of dates and times, a series of functions are available that can use values of these data types to perform calculations.

 

SELECT arrival, ADDDATE (arrival,2) new_arrival, rno
  FROM hotel.reservation
    WHERE rno = 130

Postponing the reservation date by two days

Result

ARRIVAL

NEW_ARRIVAL

RNO

2005-02-01

2005-02-03

130

 

SELECT arrival, departure, DATEDIFF(departure, arrival) overnight_stays, rno
  FROM hotel.reservation
    WHERE rno = 130

Number of overnight stays

Result

ARRIVAL

DEPARTURE

OVERNIGHT_STAYS

RNO

2005-02-01

2005-02-03

2

130

 

See also:

Date Function (date_function)

Time Function (time_function)

Extraction (extraction_function)

 

A variety of date formats (EUR, INTERNAL, ISO, JIS, and USA) are available for processing date values.

See also:

Date and Time Format (datetimeformat)

 

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