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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2023/01/07 15:02:00 UTC

[jira] [Assigned] (SPARK-37303) ALTER TABLE .. REPLACE COLUMNS works incorrectly for v2 tables in tests

     [ https://issues.apache.org/jira/browse/SPARK-37303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-37303:
------------------------------------

    Assignee: Apache Spark

> ALTER TABLE .. REPLACE COLUMNS works incorrectly for v2 tables in tests
> -----------------------------------------------------------------------
>
>                 Key: SPARK-37303
>                 URL: https://issues.apache.org/jira/browse/SPARK-37303
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.3.0
>            Reporter: Max Gekk
>            Assignee: Apache Spark
>            Priority: Major
>
> The test demonstrates the issue:
> {code:scala}
>   test("Replace columns in v2 table") {
>     withNamespaceAndTable("ns", "tbl") { t =>
>       sql(s"CREATE TABLE $t (i INT, data STRING) $defaultUsing")
>       sql(s"INSERT INTO $t SELECT 0, 'abc'")
>       sql(
>         s"""
>            |ALTER TABLE $t REPLACE COLUMNS (
>            | new_i STRING,
>            | new_data LONG)""".stripMargin)
>       sql(s"INSERT INTO $t SELECT 'def', 1000")
>       checkAnswer(
>         sql(s"SELECT new_i, new_data FROM $t"),
>         Seq(Row("def", 1000)))
>     }
>   }
> {code}
> The test fails:
> {code:java}
> == Results ==
> !== Correct Answer - 1 ==   == Spark Answer - 2 ==
> !struct<>                   struct<new_i:string,new_data:bigint>
> ![def,1000]                 [,103079215107]
> !                           [def,1000]
> {code}



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