ueshin commented on a change in pull request #32775:
URL: https://github.com/apache/spark/pull/32775#discussion_r645882104
##########
File path: python/pyspark/pandas/internal.py
##########
@@ -718,8 +927,11 @@ def attach_distributed_sequence_column(
sql_ctx,
)
columns = df.columns
- return df.selectExpr(
- "`{}` as `{}`".format(columns[1], column_name),
"`{}`.*".format(columns[0])
+ return (
+ df.selectExpr(
+ "`{}` as `{}`".format(columns[1], column_name),
"`{}`.*".format(columns[0])
+ ),
+ True,
Review comment:
The `Encoders.tuple` makes object-like elements nullable, which is the
struct converted from the original data frame, and `GetStructField.nullable`
depends on the child's nullability.
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