ql/src/test/queries/positive/sample4.q - hive - Git at Google

 --! qt:dataset:srcbucket
 -- bucket column is the same as table sample
 -- No need for sample filter
 INSERT OVERWRITE TABLE dest1 SELECT s.*
 FROM srcbucket TABLESAMPLE (BUCKET 1 OUT OF 2 on key) s
	--! qt:dataset:srcbucket
	-- bucket column is the same as table sample
	-- No need for sample filter
	INSERT OVERWRITE TABLE dest1 SELECT s.*
	FROM srcbucket TABLESAMPLE (BUCKET 1 OUT OF 2 on key) s