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Add DataFrame union_distinct and fix documentation for distinct #2574

Merged
merged 2 commits into from
May 20, 2022
Merged

Add DataFrame union_distinct and fix documentation for distinct #2574

merged 2 commits into from
May 20, 2022

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@andygrove andygrove commented May 18, 2022 •
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Which issue does this PR close?

Part of #2573

Rationale for this change

  • The documentation for distinct was incorrect and referred to performing a distinct union

What changes are included in this PR?

  • Updated the documentation for distinct
  • Added union_distinct for improved UX so the user doesn't need to remember that they need to perform a union followed by a distinct to get the equivalent of the UNION SQL operator.
  • Add SQL planner test for UNION

Are there any user-facing changes?

Yes, New API and updated docs.

@github-actions github-actions bot added the datafusion Changes in the datafusion crate label May 18, 2022
@andygrove andygrove mentioned this pull request May 18, 2022
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@andygrove andygrove merged commit c3f1d72 into apache:master May 20, 2022
@andygrove andygrove deleted the dataframe-union-distinct branch May 20, 2022 08:49
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@Dandandan Dandandan Dandandan approved these changes

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