Tim Armstrong created IMPALA-8954:
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Summary: Support subqueries in the select list
Key: IMPALA-8954
URL: https://issues.apache.org/jira/browse/IMPALA-8954
Project: IMPALA
Issue Type: Sub-task
Components: Frontend
Affects Versions: Impala 3.3.0
Reporter: Tim Armstrong
{noformat}
[localhost:21000] default> select 'foo', (select 'bar');
Query: select 'foo', (select 'bar')
Query submitted at: 2019-09-18 13:44:43 (Coordinator:
http://tarmstrong-box:25000)
ERROR: AnalysisException: Subqueries are not supported in the select list.
{noformat}
I think we can support these, implemented as a nested loop join with a
cardinality check node if needed.
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