[MCOL-2035] Some regr_*** tests aren't deterministic so comparisons are iffy. RANK() Created: 2018-12-17 Updated: 2019-03-07 Resolved: 2019-03-07 |
|
| Status: | Closed |
| Project: | MariaDB ColumnStore |
| Component/s: | ExeMgr |
| Affects Version/s: | 1.2.2 |
| Fix Version/s: | 1.2.4 |
| Type: | Bug | Priority: | Minor |
| Reporter: | David Hall (Inactive) | Assignee: | David Hall (Inactive) |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Description |
|
Some of the tests for analytic use of the regr_*** functions are testing nesting the analytic inside another Window Function. These use RANK as the Window Function. For some tests, all the results of the nested regr_*** function are the same – perhaps all NULL, or all 0.0000 or something. In these cases, RANK can rank them in any order and thus is non-deterministic. All our regression tests need to be deterministic as we decide pass or fail based on a simple compare to a reference. |
| Comments |
| Comment by David Hall (Inactive) [ 2019-03-07 ] |
|
The tests were fixed as part of ongoing efforts to clean up the regression suite. |