YiwenWu commented on code in PR #3712:
URL: https://github.com/apache/calcite/pull/3712#discussion_r1516138987
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core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java:
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@@ -691,7 +691,10 @@ private static int makeRegexpFlags(String stringFlags) {
/** SQL {@code RLIKE} function. */
public boolean rlike(String s, String pattern) {
- return cache.getUnchecked(new Key(0, pattern)).matcher(s).find();
+ // Since Spark 2.0, string literals (including regex patterns) are
unescaped in SQL parser
Review Comment:
Yes, judging by the engine execution behavior, Hive also performs the
unescape, and the result is consistent with Spark.
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