[
https://issues.apache.org/jira/browse/SPARK-28011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
U Shaw resolved SPARK-28011.
----------------------------
Resolution: Invalid
> SQL parse error when there are too many aliases in the table
> ------------------------------------------------------------
>
> Key: SPARK-28011
> URL: https://issues.apache.org/jira/browse/SPARK-28011
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.1
> Reporter: U Shaw
> Priority: Major
>
> A sql syntax error is reported when the following statement is executed.
> ......
> FROM
> menu_item_categories_tmp t1
> LEFT JOIN menu_item_categories_tmp t2 ON t1.icat_id =
> t2.icat_parent_icat_id
> AND t1.tenant_id = t2.tenant_id
> AND t2.icat_status != 'd'
> LEFT JOIN menu_item_categories_tmp t3 ON t2.icat_id =
> t3.icat_parent_icat_id
> AND t2.tenant_id = t3.tenant_id
> AND t3.icat_status != 'd'
> LEFT JOIN menu_item_categories_tmp t4 ON t3.icat_id =
> t4.icat_parent_icat_id
> AND t3.tenant_id = t4.tenant_id
> AND t4.icat_status != 'd'
> LEFT JOIN menu_item_categories_tmp t5 ON t4.icat_id =
> t5.icat_parent_icat_id
> AND t4.tenant_id = t5.tenant_id
> AND t5.icat_status != 'd'
> LEFT JOIN menu_item_categories_tmp t6 ON t5.icat_id =
> t6.icat_parent_icat_id
> AND t5.tenant_id = t6.tenant_id
> AND t6.icat_status != 'd'
> WHERE
> t1.icat_parent_icat_id = '0'
> AND t1.icat_status != 'd'
> ) SELECT DISTINCT
> tenant_id AS tenant_id,
> type AS type,
> CASE
>
> WHEN t2.num >= 1 THEN
> level0 ELSE NULL
> END AS level0,
> CASE
>
> WHEN t2.num >= 2 THEN
> level1 ELSE NULL
> END AS level1,
> CASE
>
> WHEN t2.num >= 3 THEN
> level2 ELSE NULL
> END AS level2,
> CASE
> ......
>
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