Github user techaddict commented on a diff in the pull request:
https://github.com/apache/spark/pull/13990#discussion_r70562875
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/StringFunctionsSuite.scala ---
@@ -384,4 +384,39 @@ class StringFunctionsSuite extends QueryTest with
SharedSQLContext {
}.getMessage
assert(m.contains("Invalid number of arguments for function
sentences"))
}
+
+ test("str_to_map function") {
+ val df1 = Seq(
+ ("a=1,b=2", "y"),
+ ("a=1,b=2,c=3", "y")
+ ).toDF("a", "b")
+
+ checkAnswer(
+ df1.selectExpr("str_to_map(a,',','=')"),
+ Seq(
+ Row(Map("a" -> "1", "b" -> "2")),
+ Row(Map("a" -> "1", "b" -> "2", "c" -> "3"))
+ )
+ )
+
+ val df2 = Seq(("a:1,b:2,c:3", "y")).toDF("a", "b")
+
+ checkAnswer(
+ df2.selectExpr("str_to_map(a)"),
+ Seq(Row(Map("a" -> "1", "b" -> "2", "c" -> "3")))
+ )
+
+ // All arguments should be string literals.
+ val m1 = intercept[AnalysisException]{
+ sql("select str_to_map('a:1,b:2,c:3',null,null)").collect()
--- End diff --
It gives ```FAILED: SemanticException [Error 10014]: Line 1:7 Wrong
arguments 'TOK_NULL': All argument should be string/character type```
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