harshmotw-db opened a new pull request, #47808:
URL: https://github.com/apache/spark/pull/47808
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### What changes were proposed in this pull request?
Prior to this PR, `interval second` values where the number of microseconds
needed to be represented by 19 digits could not be cast to decimal. This PR
removes this gap.
```
scala> sql("select 1000000000000.000000::interval second").show(false)
+---------------------------------------------+
|CAST(1000000000000.000000 AS INTERVAL SECOND)|
+---------------------------------------------+
|INTERVAL '1000000000000' SECOND |
+---------------------------------------------+
scala> sql("select 1000000000000.000000::interval second::decimal(38,
10)").show(false)
org.apache.spark.SparkArithmeticException:
[NUMERIC_VALUE_OUT_OF_RANGE.WITH_SUGGESTION] 0 cannot be represented as
Decimal(18, 6). If necessary set "spark.sql.ansi.enabled" to "false" to bypass
this error, and return NULL instead. SQLSTATE: 22003
```
### Why are the changes needed?
This change adds additional coverage.
### Does this PR introduce _any_ user-facing change?
Yes, users couldn't cast large second intervals to decimals earlier. Now,
they can.
### How was this patch tested?
Unit test in `IntervalExpressionsSuite`.
### Was this patch authored or co-authored using generative AI tooling?
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No.
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