[HIVE-7733] Ambiguous column reference error on query

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.13.0
• Fix Version/s: 0.14.0
• Assignee: Navis Ryu
• Reporter: Jason Dere
• Created: 14/Aug/14 18:48
• Updated: 31/Jan/15 00:48
• Resolved: 15/Oct/14 21:03

Description

CREATE TABLE agg1 
  ( 
     col0 INT, 
     col1 STRING, 
     col2 DOUBLE 
  ); 

explain SELECT single_use_subq11.a1 AS a1, 
       single_use_subq11.a2 AS a2 
FROM   (SELECT Sum(agg1.col2) AS a1 
        FROM   agg1 
        GROUP  BY agg1.col0) single_use_subq12 
       JOIN (SELECT alias.a2 AS a0, 
                    alias.a1 AS a1, 
                    alias.a1 AS a2 
             FROM   (SELECT agg1.col1 AS a0, 
                            '42'      AS a1, 
                            agg1.col0 AS a2 
                     FROM   agg1 
                     UNION ALL 
                     SELECT agg1.col1 AS a0, 
                            '41'      AS a1, 
                            agg1.col0 AS a2 
                     FROM   agg1) alias 
             GROUP  BY alias.a2, 
                       alias.a1) single_use_subq11 
         ON ( single_use_subq11.a0 = single_use_subq11.a0 );

Gets the following error:
FAILED: SemanticException [Error 10007]: Ambiguous column reference a2
Looks like this query had been working in 0.12 but starting failing with this error in 0.13

Issue Links

• is related to: HIVE-9528 SemanticException: Ambiguous column reference
• links to: review board