amaliujia commented on code in PR #38586:
URL: https://github.com/apache/spark/pull/38586#discussion_r1018685631


##########
python/pyspark/sql/connect/column.py:
##########
@@ -30,8 +30,8 @@
 
 def _bin_op(
     name: str, doc: str = "binary function", reverse: bool = False
-) -> Callable[["ColumnRef", Any], "Expression"]:
-    def _(self: "ColumnRef", other: Any) -> "Expression":
+) -> Callable[["Column", Any], "Expression"]:
+    def _(self: "Column", other: Any) -> "Expression":

Review Comment:
   yeah I was stopped several times when implementing API by current 
expressions in Python side. My current focus is to improve here.....



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