Anthrino commented on code in PR #3338:
URL: https://github.com/apache/calcite/pull/3338#discussion_r1291719259
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core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java:
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@@ -401,6 +402,16 @@ private static int makeRegexpFlags(@Nullable String
stringFlags) {
return flags;
}
+ /** SQL {@code REGEXP_CONTAINS(value, regexp)} function. */
+ public static boolean regexpContains(String value, String regex) {
+ try {
+ Pattern regexp = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
Review Comment:
Hi @mihaibudiu, this Pattern object is an instance of the java.util.regex
library, it has almost complete overlap with BQ regex except for a few negative
scenarios as highlighted on this ticket:
[CALCITE-5910](https://issues.apache.org/jira/browse/CALCITE-5910)
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