amaliujia commented on code in PR #38218:
URL: https://github.com/apache/spark/pull/38218#discussion_r993055982
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python/pyspark/sql/tests/test_connect_basic.py:
##########
@@ -79,6 +79,11 @@ def test_simple_explain_string(self):
result = df.explain()
self.assertGreater(len(result), 0)
+ def test_select_start(self):
+ df = self.connect.read.table(self.tbl_name).select("*")
+ data = df.toPandas()
+ self.assertEqual(len(data.index), 100)
Review Comment:
The best is to support `dataframe.schema` then check the schema. However the
StructType support in proto is under development:
https://github.com/apache/spark/pull/38200, and there could be other blocking
issues there.
Once schema is supported in proto, I will follow up to use `.schema` on
python side whenever it makes sense.
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