HyukjinKwon commented on a change in pull request #28633:
URL: https://github.com/apache/spark/pull/28633#discussion_r429756482
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeCreator.scala
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@@ -320,12 +324,23 @@ object CreateStruct extends FunctionBuilder {
})
}
Review comment:
Here, I took more conservative approach just by whitelisting. There are
some cases that `named_struct` makes arguably more pretty when they are
internally used. For example:
```diff
-| org.apache.spark.sql.catalyst.expressions.ZipWith | zip_with | SELECT
zip_with(array(1, 2, 3), array('a', 'b', 'c'), (x, y) -> (y, x)) |
struct<zip_with(array(1, 2, 3), array(a, b, c), lambdafunction(named_struct(y,
namedlambdavariable(), x, namedlambdavariable()), namedlambdavariable(),
namedlambdavariable())):array<struct<y:string,x:int>>> |
+| org.apache.spark.sql.catalyst.expressions.ZipWith | zip_with | SELECT
zip_with(array(1, 2, 3), array('a', 'b', 'c'), (x, y) -> (y, x)) |
struct<zip_with(array(1, 2, 3), array(a, b, c),
lambdafunction(struct(namedlambdavariable(), namedlambdavariable()),
namedlambdavariable(), namedlambdavariable())):array<struct<y:string,x:int>>> |
```
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