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Dongjoon Hyun commented on SPARK-27768: --------------------------------------- In addition to [~dkbiswal]'s investigation, I want to add `Presto` result to be complete. Hive/Spark/Presto is in the same behavior. Personally, I don't think DB2 and PostgreSQL is currently used in Big Data area. {code} presto> select CAST('Infinity' AS DOUBLE); _col0 ---------- Infinity (1 row) presto> select CAST('infinity' AS DOUBLE); Query 20190526_192453_00002_t4z79 failed: Cannot cast 'infinity' to DOUBLE {code} > Infinity, -Infinity, NaN should be recognized in a case insensitive manner > -------------------------------------------------------------------------- > > Key: SPARK-27768 > URL: https://issues.apache.org/jira/browse/SPARK-27768 > Project: Spark > Issue Type: Sub-task > Components: SQL > Affects Versions: 3.0.0 > Reporter: Xiao Li > Priority: Major > > When the inputs contain the constant 'infinity', Spark SQL does not generate > the expected results. > {code:java} > SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE)) > FROM (VALUES ('1'), (CAST('infinity' AS DOUBLE))) v(x); > SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE)) > FROM (VALUES ('infinity'), ('1')) v(x); > SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE)) > FROM (VALUES ('infinity'), ('infinity')) v(x); > SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE)) > FROM (VALUES ('-infinity'), ('infinity')) v(x);{code} > The root cause: Spark SQL does not recognize the special constants in a case > insensitive way. In PostgreSQL, they are recognized in a case insensitive > way. > Link: https://www.postgresql.org/docs/9.3/datatype-numeric.html > -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org