Valid query fails with ERROR X0A00: The select list mentions column 'A' twice.
This is not allowed in queries with GROUP BY or HAVING clauses. Try aliasing
one of the conflicting columns to a unique name
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: DERBY-765
URL: http://issues.apache.org/jira/browse/DERBY-765
Project: Derby
Type: Bug
Components: SQL
Reporter: Kathey Marsden
Priority: Minor
Fix For: 10.2.0.0
ij> run 'repro.sql';
ij> create table bug280
(
a int,
b int
);
0 rows inserted/updated/deleted
ij> insert into bug280( a, b )
values ( 1, 1 ), ( 1, 2 ), ( 1, 3 ), ( 2, 1 ), ( 2, 2 );
5 rows inserted/updated/deleted
ij> select a+1 as a, a+1 as a from bug280 group by a;
ERROR X0A00: The select list mentions column 'A' twice. This is not allowed in
queries with GROUP BY or HAVING clauses. Try aliasing one of the conflicting
columns to a unique name.
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