herunkang2018 commented on code in PR #3317:
URL: https://github.com/apache/calcite/pull/3317#discussion_r1342139698
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core/src/main/java/org/apache/calcite/runtime/SqlFunctions.java:
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@@ -1076,6 +1076,32 @@ public static int levenshtein(String string1, String
string2) {
return LEVENSHTEIN_DISTANCE.apply(string1, string2);
}
+ /** SQL FIND_IN_SET(string, stringArray) function. */
+ public static int findInSet(String matchStr, String textStr) {
+ if (matchStr.contains(",")) {
Review Comment:
This check is from the function specification, which refered to [Spark's
doc](https://spark.apache.org/docs/latest/api/sql/index.html#find_in_set). I
will add function annotation to address the meaning of this function.
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