HIVE2: got Invalid table alias or column reference when running UNION ALL query on HIVE2 ----------------------------------------------------------------------------------------- Key: TEIID-2802 URL: https://issues.jboss.org/browse/TEIID-2802 Project: Teiid Issue Type: Bug Components: Query Engine Affects Versions: 8.6 Environment: TEIID with HIVE2 Reporter: Ivan Chan Assignee: Steven Hawkins Labels: teiid Fix For: 8.7 If I tried to combine 2 tables from a same HIVE2 data source using UNION ALL, I got "Invalid table alias or column reference" error. Query that I submitted to Teiid originally: select "name" from (Select * from hive2.opportunities_small UNION ALL Select * from hive2.opportunities) "query" group by "name" order by "name" Query that Teiid generated: SELECT v_0.c_0 FROM (SELECT c_0 FROM (SELECT g_1.name AS c_0 FROM opportunities_small g_1 UNION ALL SELECT g_0.name AS c_0 FROM opportunities g_0) X__) v_0 GROUP BY v_0.c_0 ORDER BY v_0.c_0 Error: Invalid table alias or column reference 'v_0': (possible column names are: c_0)