[SPARK-48003][SQL] Add collation support for hll sketch aggregate #46241
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common/unsafe/src/main/java/org/apache/spark/sql/catalyst/util/CollationFactory.java
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…/CollationFactory.java Co-authored-by: Wenchen Fan <cloud0fan@gmail.com>
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### What changes were proposed in this pull request? Introduce collation awareness for hll sketch aggregate. ### Why are the changes needed? Add collation support for hyperloglog expressions in Spark. ### Does this PR introduce _any_ user-facing change? Yes, users should now be able to use collated strings within arguments for hyperloglog function: hll_sketch_agg. ### How was this patch tested? E2e sql tests. ### Was this patch authored or co-authored using generative AI tooling? No. Closes apache#46241 from uros-db/hll-agg. Authored-by: Uros Bojanic <157381213+uros-db@users.noreply.github.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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What changes were proposed in this pull request?
Introduce collation awareness for hll sketch aggregate.
Why are the changes needed?
Add collation support for hyperloglog expressions in Spark.
Does this PR introduce any user-facing change?
Yes, users should now be able to use collated strings within arguments for hyperloglog function: hll_sketch_agg.
How was this patch tested?
E2e sql tests.
Was this patch authored or co-authored using generative AI tooling?
No.