Dongjoon Hyun created SPARK-19910: ------------------------------------- Summary: `stack` should not reject NULL values due to type mismatch Key: SPARK-19910 URL: https://issues.apache.org/jira/browse/SPARK-19910 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 2.1.0, 2.0.1, 2.0.0 Reporter: Dongjoon Hyun
Since `stack` function generates a table with nullable columns, it should allow mixed null values. {code} scala> sql("select stack(3, 1, 2, 3)").printSchema root |-- col0: integer (nullable = true) scala> sql("select stack(3, 1, 2, null)").printSchema org.apache.spark.sql.AnalysisException: cannot resolve 'stack(3, 1, 2, NULL)' due to data type mismatch: Argument 1 (IntegerType) != Argument 3 (NullType); line 1 pos 7; 'Project [unresolvedalias(stack(3, 1, 2, null), None)] +- OneRowRelation$ {code} -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org