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@tshauck tshauck commented Jun 2, 2024

Which issue does this PR close?

Closes #10759

Rationale for this change

Repeat should not panic and should match the behavior of other common engines.

What changes are included in this PR?

Updates the main repeat function's logic to only try to cast the i64 to a usize when the count is greater than or equal to 0, otherwise returns an empty string.

Are these changes tested?

Added a sqllogictest.

@github-actions github-actions bot added the sqllogictest SQL Logic Tests (.slt) label Jun 2, 2024
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@waynexia waynexia left a comment

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Looks good to me, thanks!

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@andygrove andygrove left a comment

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Thanks @tshauck

@andygrove andygrove mentioned this pull request Jun 2, 2024
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@waynexia waynexia merged commit 59bfe77 into apache:main Jun 3, 2024
@tshauck tshauck deleted the fix-repeat branch June 3, 2024 03:45
findepi pushed a commit to findepi/datafusion that referenced this pull request Jul 16, 2024
* fix: fix string repeat for negative numbers

* style: run cargo fmt
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Repeat scalar function panics on negative repeat counts.

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