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https://issues.apache.org/jira/browse/SPARK-28007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen updated SPARK-28007:
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Summary: Caret operator (^) means bitwise XOR in Spark/Hive and
exponentiation in Postgres/Redshift (was: Caret operator (^) means bitwise XOR
in Spark and exponentiation in Postgres/Redshift)
> Caret operator (^) means bitwise XOR in Spark/Hive and exponentiation in
> Postgres/Redshift
> ------------------------------------------------------------------------------------------
>
> Key: SPARK-28007
> URL: https://issues.apache.org/jira/browse/SPARK-28007
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Josh Rosen
> Priority: Major
>
> The expression {{expr1 ^ expr2}} has different meanings in Spark and Postgres:
> * [In Postgres|https://www.postgresql.org/docs/11/functions-math.html] and
> [Redshift|https://docs.aws.amazon.com/redshift/latest/dg/r_OPERATOR_SYMBOLS.html]
> , this returns {{expr1}} raised to the exponent {{expr2}} (additionally, the
> Postgres docs explicitly state that this operation is left-associative).
> * [In Spark|https://spark.apache.org/docs/2.4.3/api/sql/index.html#_14] and
> [Hive|https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-ArithmeticOperators],
> this returns the bitwise exclusive OR of {{expr1}} and {{expr2}}.
> I'm reporting this under the Postgres compatibility umbrella. If we have SQL
> dialect support (e.g. a Postgres compatibility dialect), maybe this behavior
> could be flagged there?
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