Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/6724#discussion_r32085774
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/StringFunctionsSuite.scala
---
@@ -215,4 +215,15 @@ class StringFunctionsSuite extends SparkFunSuite with
ExpressionEvalHelper {
evaluate("abbbbc" rlike regEx, create_row("**"))
}
}
+
+ test("length for string") {
+ val regEx = 'a.string.at(0)
+ checkEvaluation(StringLength(Literal("abc")), 3, create_row("abdef"))
+ checkEvaluation(StringLength(regEx), 5, create_row("abdef"))
+ checkEvaluation(StringLength(regEx), 0, create_row(""))
+ checkEvaluation(StringLength(regEx), null, create_row(null))
+ checkEvaluation(StringLength(Literal.create(null, StringType)), null,
create_row("abdef"))
--- End diff --
Yea but his fix won't be merged for a while because it's part of a much
broader change.
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