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

Apache DerbyBigQueryDb2 (LUW)H2MariaDBMySQLOracle DBPostgreSQLSQL ServerSQLite200520072009201120132015201720192021⊘ 3.5.7 - 3.40.0⊘ 2008R2 - 2022✓ 11+⊘ 8.3 - 10✓ 11gR1+✓ 8.0.11+⊘ 5.0 - 5.7⊘ 5.1 - 10.10✓ 1.4.199+⊘ 1.4.191⊘ 9.7 - 11.5.7⊘ 2.0⊘ -

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.

                        RANGE BETWEEN INTERVAL '1' DAY 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 day less than the current row (interval '1' day preceding) and all rows that hat the same order by value as the current row (current row).

dt2020-08-132020-08-142020-08-152020-08-152020-08-17ORDER BY dtRANGEBETWEEN INTERVAL '1' DAY PRECEDINGrange betwAND CURRENT ROWcurrent 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.

Note that some systems that support over(… range between …) for numeric sort keys don’t support it on temporal data types.

Normative References

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

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