dbatomic commented on code in PR #45216: URL: https://github.com/apache/spark/pull/45216#discussion_r1498988909
########## common/unsafe/src/main/java/org/apache/spark/sql/catalyst/util/CollationFactory.java: ########## @@ -66,6 +66,13 @@ public static class Collation { */ public final boolean isBinaryCollation; + /** + * Built-in string functions with collation support. Review Comment: Instead of adding new functions here I would propose following: 1) Add only low level basic functions here (e.g. matchAt). 2) Extend UTF8String with `public boolean startsWith(final UTF8String prefix, *collationId*)`. Have all the routing happen there. 3) Short circuit if we have `DEFAULT_COLLATION_ID` to previous implementation (e.g. (startsWith(final UTF8String prefix)). That way we will not risk regressing previous version. 4) Have operators call startsWith/endsWith... with proper collationId. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org