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MySQL: Support REPLACE statement #3964

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merged 1 commit into from
Oct 14, 2022
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yoichi
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@yoichi yoichi commented Oct 14, 2022

Also fixes usage of SelectPartitionClauseSegment in LoadDataSegment

Brief summary of the change made

fixes #3947

Are there any other side effects of this change that we should be aware of?

No

Pull Request checklist

  • Please confirm you have completed any of the necessary steps below.

  • Included test cases to demonstrate any code changes, which may be one or more of the following:

    • .yml rule test cases in test/fixtures/rules/std_rule_cases.
    • .sql/.yml parser test cases in test/fixtures/dialects (note YML files can be auto generated with tox -e generate-fixture-yml).
    • Full autofix test cases in test/fixtures/linter/autofix.
    • Other.
  • Added appropriate documentation for the change.

  • Created GitHub issues for any relevant followup/future enhancements if appropriate.

Also fixes usage of SelectPartitionClauseSegment in LoadDataSegment
Comment on lines -2355 to +2356
Sequence("PARTITION", Ref("SelectPartitionClauseSegment"), optional=True),
Ref("SelectPartitionClauseSegment", optional=True),
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Can you explain this one? Docs seem to suggest it has the word PARTITION: https://dev.mysql.com/doc/refman/8.0/en/load-data.html

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@yoichi yoichi Oct 14, 2022

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SelectPartitionClauseSegment is introduced in e85fcbb (CommitDate: Jul 2 2021) and contains the word "PARTITION" inside.
LoadDataSegment is introduced in e81993f (CommitDate: Jun 29 2022) and misuse SelectPartitionClauseSegment (The misuse was overlooked because test was not included).
I noticed that in the process of implementing ReplaceSegment, fixed it, and add a test to load_data.sql.

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Cool, it makes sense now, thank you!

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codecov bot commented Oct 14, 2022

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (52e2e6e) compared to base (6828076).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files
@@            Coverage Diff            @@
##              main     #3964   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          188       188           
  Lines        14423     14426    +3     
=========================================
+ Hits         14423     14426    +3     
Impacted Files Coverage Δ
src/sqlfluff/dialects/dialect_mysql.py 100.00% <100.00%> (ø)

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@greg-finley greg-finley merged commit cc0052e into sqlfluff:main Oct 14, 2022
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Support MySQL REPLACE statement
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