[jira] [Resolved] (SPARK-28011) SQL parse error when there are too many aliases in the table

["U Shaw (JIRA)" <ji...@apache.org>]

     [ 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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