Do you mean they were flattened before by calcite or Does beam flatten them
too ?



On Fri, Feb 14, 2020 at 1:21 PM Rui Wang <ruw...@google.com> wrote:

> Nested row types might be less well supported (r.g. Row) because they were
> flattened before anyway.
>
>
> -Rui
>
> On Fri, Feb 14, 2020 at 12:14 PM Talat Uyarer <
> tuya...@paloaltonetworks.com> wrote:
>
>> Thank you for your response.
>> I saw it and applied patch on calcite 1.20. However I realized BeamCalRel
>> does not generate right code [1]to turn back Beam types. I am working on
>> that now. Please let me know if apache beam support nested row types but I
>> miss it.
>>
>>
>> [1]
>> https://github.com/apache/beam/blob/646f596988be9d6a739090f48d2fed07c8dfc17c/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamCalcRel.java#L167
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_apache_beam_blob_646f596988be9d6a739090f48d2fed07c8dfc17c_sdks_java_extensions_sql_src_main_java_org_apache_beam_sdk_extensions_sql_impl_rel_BeamCalcRel.java-23L167&d=DwMFaQ&c=V9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo&r=BkW1L6EF7ergAVYDXCo-3Vwkpy6qjsWAz7_GD7pAR8g&m=jP7K7YSYNuRNxEoqtYiLG5J8to51xQOEDCaQXWPyPGY&s=xHSFnG8v0vnb1rLc9Idq3f-21woIO5o6PI196o58n_s&e=>
>>
>> On Fri, Feb 14, 2020 at 10:33 AM Rui Wang <ruw...@google.com> wrote:
>>
>>> Calcite has improved to reconstruct ROW back in the output. See [1].
>>> Beam need to update Calcite dependency to > 1.21 to adopt that.
>>>
>>>
>>>
>>> [1]: https://jira.apache.org/jira/browse/CALCITE-3138
>>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__jira.apache.org_jira_browse_CALCITE-2D3138&d=DwMFaQ&c=V9IgWpI5PvzTw83UyHGVSoW3Uc1MFWe5J8PTfkrzVSo&r=BkW1L6EF7ergAVYDXCo-3Vwkpy6qjsWAz7_GD7pAR8g&m=kPxDNZSy_WpbC0xfVKTFpbSnpFAdhwMZYhSq9L-8H0g&s=jliQ_5N9_-n0EN1qXNmzeBX4m8Xhdcv_UtaHQ812L9Y&e=>
>>>
>>>
>>> -Rui
>>>
>>> On Thu, Feb 13, 2020 at 9:05 PM Talat Uyarer <
>>> tuya...@paloaltonetworks.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I am trying to Beam SQL. But something is wrong. I have nested row
>>>> records. I read them as Pcollection<Row> and apply Select * query and
>>>> compare with initial rows. Looks like nested rows are flatten by calcite.
>>>> How do you have any idea how can I avoid this?
>>>>
>>>> I added a same testcase for my issue:
>>>>
>>>> Schema nestedSchema =
>>>>     Schema.builder()
>>>>         .addInt32Field("f_nestedInt")
>>>>         .addStringField("f_nestedString")
>>>>         .addInt32Field("f_nestedIntPlusOne")
>>>>         .build();
>>>> Schema inputType =
>>>>     Schema.builder().addInt32Field("f_int").addRowField("f_row", 
>>>> nestedSchema).build();
>>>>
>>>> PCollection<Row> input =
>>>>     pipeline.apply(
>>>>         Create.of(
>>>>             Row.withSchema(inputType)
>>>>                 .addValues(
>>>>                     1, Row.withSchema(nestedSchema).addValues(312, "CC", 
>>>> 313).build())
>>>>                 .build())
>>>>             .withRowSchema(inputType))
>>>>     .setRowSchema(inputType);
>>>>
>>>> PCollection<Row> result =
>>>>     input
>>>>         .apply(
>>>>             SqlTransform.query(
>>>>                 "SELECT * FROM PCOLLECTION"));
>>>>
>>>> PAssert.that(result)
>>>>     .containsInAnyOrder(Row.withSchema(inputType)
>>>>         .addValues(
>>>>             1, Row.withSchema(nestedSchema).addValues(312, "CC", 
>>>> 313).build())
>>>>         .build());
>>>>
>>>>
>>>> Thank you so much in advance.
>>>>
>>>>

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