[SPARK-47414][SQL] Lowercase collation support for regexp expressions#46077
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[SPARK-47414][SQL] Lowercase collation support for regexp expressions#46077uros-db wants to merge 20 commits into
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Minor concerns, otherwise looks good.
cloud-fan
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thanks, merging to master! |
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What changes were proposed in this pull request?
Introduce collation awareness for regexp expressions: like, ilike, like all, not like all, like any, not like any, rlike, split, regexp_replace, regexp_extract, regexp_extract_all, regexp_count, regexp_substr, regexp_instr. Note: collation support is only enabled for binary (UTF8_BINARY, UNICODE) & lowercase (UTF8_BINARY_LCASE) collation.
Why are the changes needed?
Add collation support for built-in regexp functions in Spark.
Does this PR introduce any user-facing change?
Yes, users should now be able to use collated strings within arguments for built-in regexp functions: like, ilike, like all, not like all, like any, not like any, rlike, split, regexp_replace, regexp_extract, regexp_extract_all, regexp_count, regexp_substr, regexp_instr.
How was this patch tested?
Unit regexp expression tests and e2e sql tests.
Was this patch authored or co-authored using generative AI tooling?
No.