Vineet Garg created HIVE-18725:
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Summary: Improve error handling for subqueries if there is wrong
column reference
Key: HIVE-18725
URL: https://issues.apache.org/jira/browse/HIVE-18725
Project: Hive
Issue Type: Improvement
Components: Query Planning
Reporter: Vineet Garg
If there is a column reference within subquery which doesn't exist Hive throws
misleading error message.
e.g.
{code:sql}
select * from table1 where table1.col1 IN (select col2 from table2 where
table2.col1=table1.non_existing_column) and table1.col1 IN (select 4);
{code}
The above query, assuming table1 doesn't have non_existing_column, will throw
following misleading error:
{noformat}
FAILED: SemanticException Line 0:-1 Unsupported SubQuery Expression 'col1':
Only 1 SubQuery expression is supported.
{noformat}
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