Gengliang Wang created SPARK-40109:
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Summary: New SQL function: get()
Key: SPARK-40109
URL: https://issues.apache.org/jira/browse/SPARK-40109
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.4.0
Reporter: Gengliang Wang
Assignee: Gengliang Wang
Currently, when accessing array element with invalid index under ANSI SQL mode,
the error is like:
{quote}[INVALID_ARRAY_INDEX] The index -1 is out of bounds. The array has 3
elements. Use `try_element_at` and increase the array index by 1(the starting
array index is 1 for `try_element_at`) to tolerate accessing element at invalid
index and return NULL instead. If necessary set "spark.sql.ansi.enabled" to
"false" to bypass this error.
{quote}
The provided solution is complicated. I suggest introducing a new method get()
which always returns null on an invalid array index. This is from
[https://docs.snowflake.com/en/sql-reference/functions/get.html.]
Since Spark's map access always returns null, let's don't support map type in
the get method for now.
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