[ https://issues.apache.org/jira/browse/SPARK-30814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17036436#comment-17036436 ]
Terry Kim commented on SPARK-30814: ----------------------------------- Yea, I can work on this. > Add Columns references should be able to resolve each other > ----------------------------------------------------------- > > Key: SPARK-30814 > URL: https://issues.apache.org/jira/browse/SPARK-30814 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 3.0.0 > Reporter: Burak Yavuz > Priority: Major > > In ResolveAlterTableChanges, we have checks that make sure that positional > arguments exist and are normalized around case sensitivity for ALTER TABLE > ADD COLUMNS. However, we missed the case, where a column in ADD COLUMNS can > depend on the position of a column that is just being added. > For example for the schema: > {code:java} > root: > - a: string > - b: long > {code} > > The following should work: > {code:java} > ALTER TABLE ... ADD COLUMNS (x int AFTER a, y int AFTER x) {code} > Currently, the above statement will throw an error saying that AFTER x cannot > be resolved, because x doesn't exist yet. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org