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feat: support filter with windowed sort #4960

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merged 7 commits into from
Nov 8, 2024

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@waynexia waynexia commented Nov 7, 2024

I hereby agree to the terms of the GreptimeDB CLA.

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What's changed and what's your intention?

Supports SQL like select * from t where a > 0 order by ts limit 1;. The resulting plan looks like

|     1 |    0 |  GlobalLimitExec: skip=0, fetch=1 metrics=[output_rows: 1, elapsed_compute: 27973, ]
  SortPreservingMergeExec: [ts@0 DESC] metrics=[output_rows: 8, elapsed_compute: 32000, ]
    WindowedSortExec: expr=ts@0 DESC num_ranges=8 fetch=1 metrics=[output_rows: 8, elapsed_compute: 8, ]
      PartSortExec: expr=ts@0 DESC num_ranges=8 limit=1 metrics=[output_rows: 8, elapsed_compute: 8, ]
        CoalesceBatchesExec: target_batch_size=8192 metrics=[output_rows: 471572, elapsed_compute: 139367822, ]
          FilterExec: ts@0 > 1730728703716 metrics=[output_rows: 471572, elapsed_compute: 5743584, ]
            UnorderedScan: region=4569845202947(1064, 3), partition_count=8 (2 memtable ranges, 3 file 6 ranges) metrics=[output_rows: 474811, mem_used: 1118834209, elapsed_await: 416186089, elapsed_poll: 401800454, ]

Checklist

  • I have written the necessary rustdoc comments.
  • I have added the necessary unit tests and integration tests.
  • This PR requires documentation updates.

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
@waynexia waynexia requested a review from evenyag as a code owner November 7, 2024 09:44
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@github-actions github-actions bot added the docs-not-required This change does not impact docs. label Nov 7, 2024
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codecov bot commented Nov 7, 2024

Codecov Report

Attention: Patch coverage is 79.79798% with 40 lines in your changes missing coverage. Please review.

Project coverage is 83.83%. Comparing base (191755f) to head (00eb3a3).
Report is 18 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #4960      +/-   ##
==========================================
- Coverage   84.22%   83.83%   -0.40%     
==========================================
  Files        1137     1142       +5     
  Lines      210098   211707    +1609     
==========================================
+ Hits       176958   177475     +517     
- Misses      33140    34232    +1092     

@waynexia waynexia enabled auto-merge November 7, 2024 10:50
Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
@waynexia waynexia added this pull request to the merge queue Nov 8, 2024
Merged via the queue into GreptimeTeam:main with commit 8efbafa Nov 8, 2024
35 checks passed
@waynexia waynexia deleted the order-by-where branch November 8, 2024 03:06
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3 participants