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[FEATURE] Support approx_count_distinct function #4220

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#4221
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[FEATURE] Support approx_count_distinct function#4220
#4221
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HangyuanLiu
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area/statementIssues or PRs related to statementskind/featureCategorizes issue or PR as related to a new feature.

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@HangyuanLiu
HangyuanLiu
opened on Jul 30, 2020

We currently have a function called "NDV", but the name of this function is not easy to understand, and we cannot literally understand what the function does.
So we should add a common alias "approx_count_distinct" to "NDV"

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  1. HangyuanLiu
    self-assigned this
    on Jul 30, 2020
  2. HangyuanLiu
    added
    kind/featureCategorizes issue or PR as related to a new feature.
    area/statementIssues or PRs related to statements
    on Jul 30, 2020

  3. imay commented on Jul 30, 2020

    @imay
    imay
    on Jul 30, 2020
    Contributor

    LGTM

  4. morningman
    closed this as completedin #4221on Aug 1, 2020
  5. Hastyshell
    added a commit that references this issue on Jul 30, 2025

    branch-3.0: [fix](test) fix some regression test cases (apache#53588) (…

    c4c61d4
  6. BiteTheDDDDt
    added a commit that references this issue on Sep 1, 2025

    branch-3.0: [fix](test) fix some regression test cases (apache#53588) (…

    950f91e
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