[jira] [Created] (SPARK-41880) Function `from_json` should support non-literal expression

["Ruifeng Zheng (Jira)" <ji...@apache.org>]

Ruifeng Zheng created SPARK-41880:
-------------------------------------

             Summary: Function `from_json` should support non-literal expression
                 Key: SPARK-41880
                 URL: https://issues.apache.org/jira/browse/SPARK-41880
             Project: Spark
          Issue Type: Sub-task
          Components: Connect, PySpark
    Affects Versions: 3.4.0
            Reporter: Ruifeng Zheng



{code:java}
File "/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/functions.py", line 1351, in pyspark.sql.connect.functions.from_json
Failed example:
    df.select(from_json(df.value, schema).alias("json")).collect()
Exception raised:
    Traceback (most recent call last):
      File "/Users/ruifeng.zheng/.dev/miniconda3/envs/spark_dev/lib/python3.9/doctest.py", line 1334, in __run
        exec(compile(example.source, filename, "single",
      File "<doctest pyspark.sql.connect.functions.from_json[12]>", line 1, in <module>
        df.select(from_json(df.value, schema).alias("json")).collect()
      File "/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/dataframe.py", line 1019, in collect
        pdf = self.toPandas()
      File "/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/dataframe.py", line 1054, in toPandas
        return self._session.client.to_pandas(query)
      File "/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/client.py", line 413, in to_pandas
        return self._execute_and_fetch(req)
      File "/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/client.py", line 573, in _execute_and_fetch
        self._handle_error(rpc_error)
      File "/Users/ruifeng.zheng/Dev/spark/python/pyspark/sql/connect/client.py", line 625, in _handle_error
        raise SparkConnectException(status.message) from None
    pyspark.sql.connect.client.SparkConnectException: Schema in from_json should be literal string, but got 'schema_of_json({"a": 0})

{code}




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