uros-db commented on code in PR #47372:
URL: https://github.com/apache/spark/pull/47372#discussion_r1700343547
##########
sql/core/src/test/scala/org/apache/spark/sql/CollationSQLExpressionsSuite.scala:
##########
@@ -2295,6 +2295,827 @@ class CollationSQLExpressionsSuite
assert(typeException.getErrorClass ===
"DATATYPE_MISMATCH.UNEXPECTED_STATIC_METHOD")
}
+ test("min_by supports collation") {
+ val collation = "UNICODE"
+ val query = s"SELECT min_by(x, y) FROM VALUES ('a', 10), ('b', 50), ('c',
20) AS tab(x, y);"
+ withSQLConf(SqlApiConf.DEFAULT_COLLATION -> collation) {
+ checkAnswer(
+ sql(query),
+ Seq(
+ Row("a")
+ )
+ )
+ // check result row data type
+ val dataType = StringType(collation)
+ assert(sql(query).schema.head.dataType == dataType)
+ }
+ }
+
+ test("max_by supports collation") {
+ val collation = "UNICODE"
+ val query = s"SELECT max_by(x, y) FROM VALUES ('a', 10), ('b', 50), ('c',
20) AS tab(x, y);"
+ withSQLConf(SqlApiConf.DEFAULT_COLLATION -> collation) {
+ checkAnswer(
+ sql(query),
+ Seq(
+ Row("b")
+ )
+ )
+ // check result row data type
+ val dataType = StringType(collation)
+ assert(sql(query).schema.head.dataType == dataType)
+ }
+ }
+
+ test("array supports collation") {
Review Comment:
conclusion: extraction from complex types should also fail, like in the
first example above @mihailom-db
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