HyukjinKwon commented on code in PR #38908:
URL: https://github.com/apache/spark/pull/38908#discussion_r1039219748
##########
python/pyspark/sql/connect/dataframe.py:
##########
@@ -137,7 +137,13 @@ def isEmpty(self) -> bool:
return len(self.take(1)) == 0
def select(self, *cols: "ColumnOrName") -> "DataFrame":
- return DataFrame.withPlan(plan.Project(self._plan, *cols),
session=self._session)
+ sql_expr = []
+ for element in cols:
+ if isinstance(element, str):
+ sql_expr.append(sql_expression(element))
Review Comment:
`spark.range(10).groupBy("id").sum("id")` creates a data frame with a column
name called `sum(id)`
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