nikolamand-db opened a new pull request, #45933:
URL: https://github.com/apache/spark/pull/45933
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### What changes were proposed in this pull request?
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Combining multiple passthrough string functions:
- [SPARK-47417](https://issues.apache.org/jira/browse/SPARK-47417): `Ascii`,
`Chr`, `Base64`, `UnBase64`; `Chr` and `Base64` are skipped as they don't
accept input string types and don't need to be updated
- [SPARK-47418](https://issues.apache.org/jira/browse/SPARK-47418):
`Decode`, `StringDecode`, `Encode`, `ToBinary`
- [SPARK-47420](https://issues.apache.org/jira/browse/SPARK-47420):
`FormatNumber`, `Sentences`
### Why are the changes needed?
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Add collations support in string functions.
### Does this PR introduce _any_ user-facing change?
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Yes, it changes behavior of string functions when string parameters have
collation.
### How was this patch tested?
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Add checks to `CollationStringExpressionsSuite`.
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No.
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