Runkang He created CALCITE-6077:
-----------------------------------
Summary: Add FACTORIAL functions (enabled in Hive and Spark
library)
Key: CALCITE-6077
URL: https://issues.apache.org/jira/browse/CALCITE-6077
Project: Calcite
Issue Type: New Feature
Components: core
Affects Versions: 1.35.0
Reporter: Runkang He
Add FACTORIAL functions (enabled in Hive and Spark library)
FACTORIAL(expr): Returns the factorial of expr. expr is [0..20]. Otherwise,
returns NULL.
For example:
{code:sql}
SELECT factorial(5);
>120
{code}
See more at
[Hive|https://cwiki.apache.org/confluence/display/hive/languagemanual+udf#LanguageManualUDF-MathematicalFunctions]
and [Spark|https://spark.apache.org/docs/latest/api/sql/index.html#factorial]
doc.
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