Can I use… over(… range between …) (numeric)

1. Only with unbounded and current row — not with interval distance as shown below

The over accepts range framing, which limits the scope of the window functions to the rows between the specified range of values relative to the value of the current row.

SELECT *, COUNT(*) OVER(ORDER BY val
                        RANGE BETWEEN 1 PRECEDING
                                  AND CURRENT ROW)
  FROM …

Returns an additional column with the row count of the rows that have the order by value up to 1 less than the current row (1 preceding) and all rows that hat the same order by value as the current row (current row).

Meaningful framing requires an order by clause in over as well. Note that this order by clause does not necessarily affect the order of rows in the final result. If you want the result in a specific order, add an order by clause at the outermost query level.

Related

• Sub clauses:

  • over(partition by …)

  • over(order by …)

  • Framing:

    • over(… rows between …)

    • over(… range between …) (datetime)

    • over(… groups between …)

    • Frame exclusion:

      • over(… exclude no others)

      • over(… exclude current row)

      • over(… exclude group)

      • over(… exclude ties)

Normative References

The over clause, including range between, is defined in ISO/IEC 9075:2016-2 as part of optional feature T611, “Elementary OLAP operations”.