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https://issues.apache.org/jira/browse/FLINK-12701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16854154#comment-16854154
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Liya Fan commented on FLINK-12701:
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Hi [~josh.bradt], thanks for reporting this problem.
This seems a real bug of Flink. Would you please provide more details to
reproduce the problem, like the table schema, sample data?
> Column name alias causes exception when used with where and group-by
> --------------------------------------------------------------------
>
> Key: FLINK-12701
> URL: https://issues.apache.org/jira/browse/FLINK-12701
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.8.0
> Reporter: Josh Bradt
> Priority: Major
>
> Assigning a column an alias containing a space sometimes causes an exception
> even though the docs suggest this is valid.
> Assume we have a table {{Groups}} that contains a string-typed column called
> {{name}}. Then the query
> {code:sql}
> SELECT `Groups`.`name` AS `Group Name` FROM `Groups`
> {code}
> works as expected, but
> {code:sql}
> SELECT `Groups`.`name` AS `Group Name`
> FROM `Groups`
> WHERE `Groups`.`name` LIKE 'Treat%'
> ORDER BY `Groups`.`name` ASC
> {code}
> produces the following exception
> {code:java}
> org.apache.flink.api.common.typeutils.CompositeType$InvalidFieldReferenceException:
> Invalid tuple field reference "Group Name".
> at
> org.apache.flink.api.java.typeutils.RowTypeInfo.getFlatFields(RowTypeInfo.java:97)
> at
> org.apache.flink.api.common.operators.Keys$ExpressionKeys.<init>(Keys.java:266)
> at
> org.apache.flink.api.common.operators.Keys$ExpressionKeys.<init>(Keys.java:223)
> at org.apache.flink.api.java.DataSet.partitionByRange(DataSet.java:1298)
> at
> org.apache.flink.table.plan.nodes.dataset.DataSetSort.translateToPlan(DataSetSort.scala:99)
> at
> org.apache.flink.table.api.BatchTableEnvironment.translate(BatchTableEnvironment.scala:498)
> at
> org.apache.flink.table.api.BatchTableEnvironment.translate(BatchTableEnvironment.scala:476)
> at
> org.apache.flink.table.api.BatchTableEnvironment.writeToSink(BatchTableEnvironment.scala:311)
> at
> org.apache.flink.table.api.TableEnvironment.insertInto(TableEnvironment.scala:879)
> at org.apache.flink.table.api.Table.insertInto(table.scala:1126)
> [...]
> {code}
> If you remove the {{WHERE}} clause or the {{ORDER BY}} clause, it works fine.
> It only fails when both are included. Additionally, it works fine if the
> column alias ({{AS `Group Name`}}) is removed or if it doesn't contain a
> space ({{AS `GroupName`}}).
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