ql/src/test/queries/positive/input6.q - hive - Git at Google

 --! qt:dataset:src1
 FROM src1
 INSERT OVERWRITE TABLE dest1 SELECT src1.key, src1.value WHERE src1.key is null
	--! qt:dataset:src1
	FROM src1
	INSERT OVERWRITE TABLE dest1 SELECT src1.key, src1.value WHERE src1.key is null