zhengruifeng commented on code in PR #52001:
URL: https://github.com/apache/spark/pull/52001#discussion_r2303810134
##########
python/pyspark/sql/tests/test_udtf.py:
##########
@@ -2923,6 +2923,44 @@ def eval(self):
err_type=Exception,
)
+ def test_udtf_with_collated_string_types(self):
+ @udtf(
+ "out1 string, out2 string collate UTF8_BINARY, out3 string collate
UTF8_LCASE,"
+ " out4 string collate UNICODE"
+ )
+ class MyUDTF:
+ def eval(self, v1, v2, v3, v4):
+ yield (v1 + "1", v2 + "2", v3 + "3", v4 + "4")
+
+ schema = StructType(
+ [
+ StructField("col1", StringType(), True),
+ StructField("col2", StringType("UTF8_BINARY"), True),
+ StructField("col3", StringType("UTF8_LCASE"), True),
+ StructField("col4", StringType("UNICODE"), True),
+ ]
+ )
+ df = self.spark.createDataFrame([("hello",) * 4], schema=schema)
+
+ df_out = df.lateralJoin(
+ MyUDTF(
+ col("col1").outer(), col("col2").outer(), col("col3").outer(),
col("col4").outer()
+ )
+ ).select("out1", "out2", "out3", "out4")
+ result_df = df_out.select("out.*")
Review Comment:
```suggestion
result_df = df.lateralJoin(
MyUDTF(
col("col1").outer(), col("col2").outer(),
col("col3").outer(), col("col4").outer()
)
).select("out1", "out2", "out3", "out4")
```
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