yyfhust opened a new pull request, #31117:
URL: https://github.com/apache/beam/pull/31117
**Please** add a meaningful description for your change here
Upon utilizing the Beam SQL within our pipeline, we encountered a noteworthy
exception. It appears that when the input row encompasses fields of iterable
types, the process fails irrespective of whether the iterable fields are
included in the SQL filter condition or not. This issue stems from the fact
that the Beam SQL extension attempts to construct an output row schema based on
the input schema, and unfortunately, it currently lacks support for iterable
types.
Consider the following example:
Given an inputRow in the schema:
```
field1: String
field2: Integer
field3: Array<String>
field4: ITERABLE
```
And a Beam SQL condition:
field2 > 1
The pipeline will invariably fail, yielding the following error: `Exception
in thread "main" java.lang.UnsupportedOperationException: Unable to get
ITERABLE at
org.apache.beam.sdk.extensions.sql.impl.rel.BeamCalcRel$InputGetterImpl.getBeamField(BeamCalcRel.java:603).`
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