2012-12-24

Joining Temporal Intervals

From time to time a customer asks me how to join multiple tables with temporal intervals (e.g. defined by two columns such as valid_from and valid_to […]
2012-12-27

Merging Temporal Intervals with Gaps

In Joining Temporal Intervals I explained how to join multiple temporal tables. The provided solution merges also temporal intervals but – as pointed out in that post […]
2012-12-28

Joining Temporal Intervals Part 2

The solution I’ve provided in Joining Temporal Intervals produces wrong results if one or more temporal tables have gaps in their history or if disconnected intervals have […]
2014-01-04

Multi-temporal Features in Oracle 12c

Oracle 12c has a feature called Temporal Validity. With Temporal Validity you can add one or more valid time dimensions to a table using existing columns, […]