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[SPARK-48688][SQL] Return reasonable error when calling SQL to_avro and from_avro functions but Avro is not loaded by default #47063

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[SPARK-48688][SQL] Return reasonable error when calling SQL to_avro and from_avro functions but Avro is not loaded by default #47063

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dtenedor Jun 21, 2024
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add docs
dtenedor Jun 22, 2024
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dtenedor committed Jun 22, 2024
commit 84ac6fb1fbe79a7d7667264808b9976ea4d811b6
18 changes: 18 additions & 0 deletions docs/sql-data-sources-avro.md
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Expand Up @@ -225,6 +225,24 @@ write.stream(
{% endhighlight %}
</div>

<div data-lang="sql" markdown="1">
{% highlight sql %}
CREATE TABLE t AS
SELECT NAMED_STRUCT('u', NAMED_STRUCT('member0', member0, 'member1', member1)) AS s
FROM VALUES (1, NULL), (NULL, 'a') tab(member0, member1);
DECLARE avro_schema STRING;
SET VARIABLE avro_schema =
'{ "type": "record", "name": "struct", "fields": [{ "name": "u", "type": ["int","string"] }] }';

SELECT TO_AVRO(s, avro_schema) AS RESULT FROM t;

SELECT FROM_AVRO(result, avro_schema, MAP()).u FROM (
SELECT TO_AVRO(s, avro_schema) AS RESULT FROM t);

DROP TEMPORARY VARIABLE avro_schema;
DROP TABLE t;
{% endhighlight %}
</div>
</div>

## Data Source Option
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