Module org.jooq
Package org.jooq.types

Interface Interval

All Superinterfaces:
Serializable
All Known Implementing Classes:
DayToSecond, YearToMonth, YearToSecond
public interface Interval extends Serializable
A substitute for JDBC's missing java.sql.Interval data type.

JDBC lacks an important data type that is present in most SQL databases: INTERVAL. The SQL:2008 standard states that there are two types of intervals:

4.6.3 Intervals

There are two classes of intervals. One class, called year-month intervals, has an express or implied datetime precision that includes no fields other than YEAR and MONTH, though not both are required. The other class, called day-time intervals, has an express or implied interval precision that can include any fields other than YEAR or MONTH.

INTERVAL can be combined with date time data types according to the following operation table:

Operand 1 Operator Operand 2 Result Type
Datetime – Datetime Interval
Datetime + or – Interval Datetime
Interval + Datetime Datetime
Interval + or – Interval Interval
Interval * or / Numeric Interval
Numeric * Interval Interval

Interval implementations can be expected to also also extend Number.

Note: only a few databases actually support this data type on its own. You can still use it for date time arithmetic in other databases, though, through Field.add(Field) and Field.sub(Field) Databases that have been observed to natively support INTERVAL data types are:

These dialects have been observed to partially support INTERVAL data types in date time arithmetic functions, such as TIMESTAMPADD, and TIMESTAMPDIFF:

Author:
Lukas Eder

  • Method Details

    • neg

      Interval neg()
      Negate the interval (change its sign)

    • abs

      Interval abs()
      Get the absolute value of the interval (set its sign to positive)

    • getSign

      int getSign()
      The sign of the interval
      Returns:
      1 for positive or zero, -1 for negative

    • doubleValue

      double doubleValue()
      See Also:

    • floatValue

      float floatValue()
      See Also:

    • longValue

      long longValue()
      See Also:

    • intValue

      int intValue()
      See Also:

    • byteValue

      byte byteValue()
      See Also:

    • shortValue

      short shortValue()
      See Also:

    • toDuration

      Duration toDuration()
      Get a duration representation of this interval.

      There is an obvious Duration representation for DayToSecond intervals. If the interval contains YearMonth information, then the corresponding duration will use:

      • 1 year = 365.25 days
      • 1 month = 30 days

      This corresponds to PostgreSQL's EXTRACT(EPOCH FROM my_interval) behaviour.