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### What changes were proposed in this pull request? More precise description of the result of the `percentile_approx()` function and its synonym `approx_percentile()`. The proposed sentence clarifies that the function returns **one of elements** (or array of elements) from the input column. ### Why are the changes needed? To improve Spark docs and avoid misunderstanding of the function behavior. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? `./dev/scalastyle` Closes #29835 from MaxGekk/doc-percentile_approx. Authored-by: Max Gekk <max.gekk@gmail.com> Signed-off-by: Liang-Chi Hsieh <viirya@gmail.com> |
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