[
https://issues.apache.org/jira/browse/CALCITE-259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14512362#comment-14512362
]
Yuri Au Yong edited comment on CALCITE-259 at 4/25/15 9:49 AM:
---------------------------------------------------------------
Vladimir, (select a from table) doesn't check for single value.
Julian, "SELECT * FROM (VALUES 1) UNION ALL SELECT * FROM (VALUES 1)" doesn't
work on mysql.
I will do this instead:
SELECT DEPTNO AS $f0,
CASE (SELECT COUNT(DEPTNO) FROM EMP WHERE ENAME='ALLEN')
WHEN 1 THEN DEPTNO
WHEN 0 THEN NULL
ELSE (SELECT COUNT(1) FROM EMP UNION ALL SELECT COUNT(1) FROM EMP) END
FROM EMP as t WHERE ENAME='ALLEN'
was (Author: yay):
Vladimir, (select a from table) doesn't check for single value.
Julian, "SELECT * FROM (VALUES 1) UNION ALL SELECT * FROM (VALUES 1)" doesn't
work on mysql.
> Using sub-queries in CASE statement against JDBC tables generates invalid
> Oracle SQL
> ------------------------------------------------------------------------------------
>
> Key: CALCITE-259
> URL: https://issues.apache.org/jira/browse/CALCITE-259
> Project: Calcite
> Issue Type: Bug
> Reporter: GitHub Import
> Labels: github-import
> Attachments: [CALCITE-259]-Description.patch,
> [CALCITE-259]-Description.patch
>
>
> 1.
> select e.NAME,
> (CASE e.dept_ID WHEN (Select d.id from PV_ADMIN.dept d where d.id =
> e.dept_id)
> THEN (Select d.name from PV_ADMIN.dept d where d.id = e.dept_id)
> ELSE 'DepartmentNotFound' END ) AS DEPTNAME
> from PV_ADMIN.EMP e;
>
> 2.
> select e.NAME,
> CASE WHEN e.dept_ID = (select d.ID from PV_ADMIN.dept d where d.NAME =
> 'SALES') then 'SALES'
> ELSE 'Not Matched.'
> END as department
> from PV_ADMIN.EMP e ;
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/julianhyde/optiq/issues/259
> Created by: [kunal-mahale|https://github.com/kunal-mahale]
> Labels: duplicate,
> Created at: Fri Apr 25 06:41:04 CEST 2014
> State: open
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
