yaooqinn opened a new pull request #26702: [PARK-30070][SQL] Support datetimes predicate - overlaps URL: https://github.com/apache/spark/pull/26702 ### What changes were proposed in this pull request? ```scala * The operator `OVERLAPS` determines whether or not two chronological periods overlap in time. A * chronological period is specified by a pair of datetimes (starting and ending). * * If the length of the period is greater than 0, then the period consists of all points of time * greater than or equal to the lower endpoint, and less than the upper endpoint, * a.k.a [lower, upper). * * If the length of the period is equal to 0, then the period consists of a single point in time, * the lower endpoint, a.k.a [lower, lower]. * * Two periods overlap if they have at least one point in common. ``` ```sql postgres=# select (cast(a as timestamp), cast(b as timestamp)) overlaps (cast(c as timestamp), cast(d as timestamp)) from (values ('2011-11-11', '2011-11-11', '2011-11-11', '2011-11-11'), ('2011-11-10', '2011-11-11', '2011-11-11', '2011-11-12'), ('2011-11-11', '2011-11-10', '2011-11-11', '2011-11-12'), ('2011-11-11', '2011-11-10', '2011-11-12', '2011-11-11'), ('2011-11-10', '2011-11-11', '2011-11-12', '2011-11-13'), ('2011-11-10', '2011-11-20', '2011-11-11', '2011-11-19'), ('2011-11-11', '2011-11-19', '2011-11-10', '2011-11-20')) t(a,b,c,d); overlaps ---------- t f f f f t t (7 rows) ``` Checked PostgreSQL, it support datetimes in pairs but without support for datetime + interval, so I decide we support the former and leave the latter to a followup. ### Why are the changes needed? ANSI support FeatureID: F053 Better PostgreSQL feature parity too. ### Does this PR introduce any user-facing change? Yes, add a datetime predicate. ### How was this patch tested? <!-- If tests were added, say they were added here. Please make sure to add some test cases that check the changes thoroughly including negative and positive cases if possible. If it was tested in a way different from regular unit tests, please clarify how you tested step by step, ideally copy and paste-able, so that other reviewers can test and check, and descendants can verify in the future. If tests were not added, please describe why they were not added and/or why it was difficult to add. --> add ut
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