ql/src/test/queries/negative/duplicate_alias.q - hive - Git at Google

 --! qt:dataset:src
 FROM src a JOIN src a ON (a.key = a.key)
 INSERT OVERWRITE TABLE dest1 SELECT a.key, a.value
	--! qt:dataset:src
	FROM src a JOIN src a ON (a.key = a.key)
	INSERT OVERWRITE TABLE dest1 SELECT a.key, a.value