amaliujia commented on code in PR #38866:
URL: https://github.com/apache/spark/pull/38866#discussion_r1037581740
##########
python/pyspark/sql/connect/plan.py:
##########
@@ -721,8 +721,19 @@ def plan(self, session: "SparkConnectClient") ->
proto.Relation:
rel.join.using_columns.append(self.on)
else:
rel.join.join_condition.CopyFrom(self.to_attr_or_expression(self.on, session))
- else:
- rel.join.using_columns.extend(self.on)
+ elif len(self.on) > 0:
+ if isinstance(self.on[0], str):
+ rel.join.using_columns.extend(self.on) # ignore: arg-type
+ else:
+ merge_column = None
+ for c in self.on:
+ if merge_column is not None:
+ merge_column = merge_column & c
+ else:
+ merge_column = c
+ rel.join.join_condition.CopyFrom(
+ merge_column.to_plan(session) # ignore: union-attr
Review Comment:
With your analysis I see the error better now.
I chose to cast merged_column to `Column` which fix the error because I did
`len(self.on) > 0` first then also rule out the str case by
`isinstance(self.on[0], str)`.
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