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About branch window-functions
This branch is to experiment with bringing SQLite WINDOW function support up to speed with Postgres 11. https://modern-sql.com/blog/2019-02/postgresql-11
44 check-ins related to "window-functions"
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2019-03-26
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| 13:08 | Add support for new window functions related features - GROUPS frames, RANGE frames with logical start and end points, the EXCLUDE clause and window chaining. check-in: c6da39115d user: dan tags: trunk | |
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2019-03-22
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| 13:56 | Fix a problem with a window function in a correlated sub-query where at least one reference to the outer SELECT appears in a FROM clause sub-select. Closed-Leaf check-in: 9aca86f983 user: dan tags: window-functions | |
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2019-03-21
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| 13:51 | Remove assert() statements based on the counter-factual proposition that 0 is not a valid cursor number. check-in: c7b336181a user: dan tags: window-functions | |
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2019-03-19
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| 19:39 | Add further tests to window8.test. check-in: ec7e224f50 user: dan tags: window-functions | |
| 19:19 | Fix a problem with EXCLUDE clauses on window frames with no ORDER BY. check-in: e025506379 user: dan tags: window-functions | |
| 17:45 | Add tests to ensure that the window functions implementation is not generating code for unnecessary sorts. check-in: e195948a68 user: dan tags: window-functions | |
| 16:49 | Add missing VdbeCoverage() macros to new code in window.c. check-in: 4f9b93e6cf user: dan tags: window-functions | |
| 11:56 | Revert the OP_MustBeInt opcode implementation on this branch so that it again matches trunk. The extra functionality is no longer required. check-in: c02f77b1b4 user: dan tags: window-functions | |
| 11:17 | Update this branch with latest trunk changes. check-in: 98cc265987 user: dan tags: window-functions | |
| 09:57 | Add a LICENSE.md, containing the text of the blessing. check-in: cbb7e60272 user: drh tags: trunk | |
| 06:40 | Ensure that all the new window-function keywords can still be used as SQL identifiers. check-in: a6d61dfd47 user: dan tags: window-functions | |
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2019-03-18
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| 21:19 | Add further tests for new window function functionality. check-in: 1fbddf01b1 user: dan tags: window-functions | |
| 18:55 | Always evaluate window functions using the alternative path usually only used by EXCLUDE frames if the SQLITE_QueryFlattener test flag is set. check-in: 2879a691ac user: dan tags: window-functions | |
| 16:51 | Fixes for RANGE windows and NULL values. check-in: 723c84be3e user: dan tags: window-functions | |
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2019-03-16
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| 20:29 | Fix problems with RANGE windows and string, blob and NULL values. check-in: cebe09e11c user: dan tags: window-functions | |
| 10:15 | In order to identify the first row of each partition, check if the rowid in the ephemeral table is 1 instead of using a dedicated flag register. check-in: f2d5f7a24c user: dan tags: window-functions | |
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2019-03-15
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| 20:46 | Implement the EXCLUDE clause for window frames. check-in: 9b43c3ee2e user: dan tags: window-functions | |
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2019-03-14
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| 20:53 | Parse EXCLUDE clauses in window frames. They do not yet work. check-in: d03c7533a1 user: dan tags: window-functions | |
| 16:36 | Add things to this branch that will be required to support the EXCLUDE clause. check-in: 7d66cd2013 user: dan tags: window-functions | |
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2019-03-13
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| 17:31 | Merge latest trunk changes into this branch. check-in: 0b904517bd user: dan tags: window-functions | |
| 17:20 | Avoid allocating excessive registers for the PARTITION BY expressions when processing window functions. check-in: 180be26623 user: dan tags: window-functions | |
| 15:29 | Remove rows from the ephemeral table used by window functions once they are no longer required. check-in: 6ad5531920 user: dan tags: window-functions | |
| 13:19 | New test cases added to test/fuzzdata8.db check-in: 049e992620 user: drh tags: trunk | |
| 08:28 | Minor optimization in sqlite3WindowCodeStep(). check-in: b1322ffb6e user: dan tags: window-functions | |
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2019-03-12
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| 18:28 | Allow real values to be used in PRECEDING and FOLLOWING expressions for RANGE window frames. check-in: 25ff7091cb user: dan tags: window-functions | |
| 15:21 | Expand on header comment for sqlite3WindowCodeStep(). Further simplify the implementation of the same. check-in: 5129bcc996 user: dan tags: window-functions | |
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2019-03-11
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| 19:50 | Remove "cache mode" from the window frame code generator. Handle the same cases by editing the window frame specification itself. check-in: 0812635383 user: dan tags: window-functions | |
| 18:17 | Simplify the windows frame code some. Add a comment explaining some of the VM code generated by sqlite3WindowCodeStep(). check-in: 6bd1a07949 user: dan tags: window-functions | |
| 11:12 | Fix problems with "RANGE ... ORDER BY <expr> DESC" window frames. check-in: e7bced731a user: dan tags: window-functions | |
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2019-03-09
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| 20:49 | Add support for RANGE window frames. Some cases still do not work. check-in: ffc32b246d user: dan tags: window-functions | |
| 07:38 | Merge latest trunk changes into this branch. check-in: 53ea550ce7 user: dan tags: window-functions | |
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2019-03-08
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| 20:57 | Add simple tests for GROUPS window frames. check-in: 2872702dac user: dan tags: window-functions | |
| 20:26 | Fix a harmless bug in the Makefile. check-in: 62ac9cb07f user: drh tags: trunk | |
| 20:02 | Finish consolidation of window frame code. Add untested support for GROUPS frames. check-in: 954bf36993 user: dan tags: window-functions | |
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2019-03-07
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| 20:47 | Fix other "ROWS BETWEEN" cases on this branch. check-in: a5f68f6647 user: dan tags: window-functions | |
| 19:26 | Modify new window functions function so that cursors are stepped immediately after each operation, instead of immediately before. check-in: 093d2b25f1 user: dan tags: window-functions | |
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2019-03-06
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| 21:04 | Simplify the window function code generator some more. check-in: 45cbd3b449 user: dan tags: window-functions | |
| 17:12 | Improvements to the way built-in window functions are handled. check-in: e8eee566df user: dan tags: window-functions | |
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2019-03-05
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| 19:29 | Extend windowCodeStep() to handle any ROWS PRECEDING/FOLLOWING frame specification. check-in: af0ea13635 user: dan tags: window-functions | |
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2019-03-04
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| 21:08 | Merge trunk changes into this branch. check-in: 9b4d561f68 user: dan tags: window-functions | |
| 21:07 | Support some "ROWS BETWEEN N PRECEDING AND M FOLLOWING" window functions without caching entire partitions. check-in: e7a91f1228 user: dan tags: window-functions | |
| 07:15 | Fix a problem preventing compilation with SQLITE_OMIT_UTF16. check-in: 906d1fd865 user: dan tags: trunk | |
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2019-02-16
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| 17:27 | Add support for chaining of WINDOW definitions. check-in: c155125fd5 user: dan tags: window-functions | |
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2019-02-14
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| 15:27 | Improved oversized cell detection when updating ptrmap pages in balance_nonroot(). check-in: aa61435a4c user: drh tags: trunk | |