mirror of
https://github.com/apache/impala.git
synced 2026-01-01 09:00:42 -05:00
65353fd9fb
This change modifies that behavior of NULL ordering such that nulls always compare greater than other values, but "nulls first" or "nulls last" can be used to explicitly specify if nulls should be sorted first or last regardless of the asc/desc. Change-Id: I92feda1e7f42249de4009afd39f8395a0a32a2f8 Reviewed-on: http://gerrit.ent.cloudera.com:8080/812 Reviewed-by: Marcel Kornacker <marcel@cloudera.com> Reviewed-by: Matthew Jacobs <mj@cloudera.com> Tested-by: Matthew Jacobs <mj@cloudera.com>
804 lines
12 KiB
Plaintext
804 lines
12 KiB
Plaintext
====
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---- QUERY
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# Based on Aggregation Queries
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select int_col, sum(float_col)
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from functional_hbase.alltypessmall
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where id < 5
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group by 1
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order by 2
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limit 3
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---- RESULTS
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0,0
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1,1.100000023841858
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2,2.200000047683716
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---- TYPES
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INT, DOUBLE
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====
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---- QUERY
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# Run query without order by
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select tinyint_col, count(*)
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from alltypesagg
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group by 1
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limit 10
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---- RESULTS
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5,1000
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8,1000
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7,1000
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2,1000
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NULL,1000
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1,1000
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4,1000
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9,1000
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6,1000
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3,1000
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---- TYPES
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TINYINT, BIGINT
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====
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---- QUERY
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# Same query order by asc first col
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select tinyint_col, count(*)
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from alltypesagg
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group by 1
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order by 1
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limit 10
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---- RESULTS
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1,1000
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2,1000
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3,1000
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4,1000
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5,1000
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6,1000
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7,1000
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8,1000
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9,1000
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NULL,1000
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---- TYPES
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TINYINT, BIGINT
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====
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---- QUERY
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# Same query order by asc first col, NULL should be last
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# because it compares greater.
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select tinyint_col, count(*)
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from alltypesagg
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group by 1
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order by 1
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limit 10
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---- RESULTS
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1,1000
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2,1000
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3,1000
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4,1000
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5,1000
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6,1000
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7,1000
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8,1000
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9,1000
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NULL,1000
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---- TYPES
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TINYINT, BIGINT
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====
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---- QUERY
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# Same query order by asc first col, NULL should be first
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select tinyint_col, count(*)
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from alltypesagg
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group by 1
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order by 1 nulls first
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limit 10
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---- RESULTS
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NULL,1000
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1,1000
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2,1000
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3,1000
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4,1000
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5,1000
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6,1000
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7,1000
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8,1000
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9,1000
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---- TYPES
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TINYINT, BIGINT
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====
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---- QUERY
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# Same query but first col desc.
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# NULL should be first because it compares greater
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select tinyint_col, count(*)
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from alltypesagg
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group by 1
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order by 1 desc
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limit 20
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---- RESULTS
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NULL,1000
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9,1000
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8,1000
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7,1000
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6,1000
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5,1000
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4,1000
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3,1000
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2,1000
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1,1000
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---- TYPES
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TINYINT, BIGINT
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====
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---- QUERY
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# Same query as above but NULL should be last
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select tinyint_col, count(*)
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from alltypesagg
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group by 1
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order by 1 desc nulls last
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limit 20
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---- RESULTS
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9,1000
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8,1000
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7,1000
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6,1000
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5,1000
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4,1000
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3,1000
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2,1000
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1,1000
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NULL,1000
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---- TYPES
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TINYINT, BIGINT
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====
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---- QUERY
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select date_string_col,int_col
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from alltypesagg
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order by date_string_col, int_col desc
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limit 10
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---- RESULTS
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'01/01/10',NULL
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'01/01/10',999
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'01/01/10',998
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'01/01/10',997
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'01/01/10',996
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'01/01/10',995
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'01/01/10',994
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'01/01/10',993
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'01/01/10',992
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'01/01/10',991
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---- TYPES
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STRING, INT
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====
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---- QUERY
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# order by with null tuples in tuple row
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select j.*, d.* from JoinTbl j full outer join DimTbl d
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on (j.test_id = d.id)
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order by j.test_id, j.test_name, j.test_zip, j.alltypes_id, d.name
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limit 100
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---- RESULTS
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1001,'Name1',94611,5000,1001,'Name1',94611
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1002,'Name2',94611,5000,1002,'Name2',94611
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1003,'Name3',94611,5000,1003,'Name3',94612
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1004,'Name4',94611,5000,1004,'Name4',94612
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1005,'Name5',94611,5000,1005,'Name5',94613
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1006,'Name16',94612,5000,1006,'Name6',94613
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1006,'Name16',94612,15000,1006,'Name6',94613
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1006,'Name16',94616,5000,1006,'Name6',94613
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1006,'Name16',94616,15000,1006,'Name6',94613
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1006,'Name6',94616,5000,1006,'Name6',94613
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1006,'Name6',94616,15000,1006,'Name6',94613
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1106,'Name16',94612,5000,NULL,'NULL',NULL
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1106,'Name16',94612,15000,NULL,'NULL',NULL
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1106,'Name16',94616,5000,NULL,'NULL',NULL
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1106,'Name16',94616,15000,NULL,'NULL',NULL
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1106,'Name6',94612,5000,NULL,'NULL',NULL
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1106,'Name6',94612,15000,NULL,'NULL',NULL
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1106,'Name6',94616,5000,NULL,'NULL',NULL
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1106,'Name6',94616,15000,NULL,'NULL',NULL
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NULL,'NULL',NULL,NULL,1010,'Name10',94615
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NULL,'NULL',NULL,NULL,1007,'Name7',94614
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NULL,'NULL',NULL,NULL,1008,'Name8',94614
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NULL,'NULL',NULL,NULL,1009,'Name9',94615
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---- TYPES
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BIGINT, STRING, INT, INT, BIGINT, STRING, INT
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====
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---- QUERY
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# order by multiple cols with nulls
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select tinyint_col % 3, smallint_col % 3, count(*)
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from alltypesagg
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where day = 1
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group by 1, 2
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order by 1, 2
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limit 20
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---- RESULTS
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0,0,120
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0,1,90
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0,2,90
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1,0,90
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1,1,120
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1,2,90
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2,0,90
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2,1,90
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2,2,120
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NULL,0,30
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NULL,1,30
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NULL,2,30
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NULL,NULL,10
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---- TYPES
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TINYINT, SMALLINT, BIGINT
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====
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---- QUERY
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select tinyint_col % 3, smallint_col % 3, count(*)
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from alltypesagg
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where day = 1
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group by 1, 2
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order by 1, 2 desc
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limit 20
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---- RESULTS
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0,2,90
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0,1,90
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0,0,120
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1,2,90
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1,1,120
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1,0,90
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2,2,120
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2,1,90
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2,0,90
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NULL,NULL,10
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NULL,2,30
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NULL,1,30
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NULL,0,30
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---- TYPES
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TINYINT, SMALLINT, BIGINT
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====
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---- QUERY
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select tinyint_col % 3, smallint_col % 3, count(*)
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from alltypesagg
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where day = 1
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group by 1, 2
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order by 1 desc, 2
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limit 20
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---- RESULTS
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NULL,0,30
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NULL,1,30
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NULL,2,30
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NULL,NULL,10
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2,0,90
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2,1,90
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2,2,120
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1,0,90
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1,1,120
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1,2,90
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0,0,120
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0,1,90
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0,2,90
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---- TYPES
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TINYINT, SMALLINT, BIGINT
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====
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---- QUERY
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select tinyint_col % 3, smallint_col % 3, count(*)
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from alltypesagg
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where day = 1
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group by 1, 2
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order by 1 desc, 2 desc
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limit 20
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---- RESULTS
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NULL,NULL,10
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NULL,2,30
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NULL,1,30
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NULL,0,30
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2,2,120
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2,1,90
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2,0,90
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1,2,90
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1,1,120
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1,0,90
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0,2,90
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0,1,90
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0,0,120
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---- TYPES
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TINYINT, SMALLINT, BIGINT
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====
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---- QUERY
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# Multiple ordering columns with asc/desc and nulls first/last
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select tinyint_col % 3, smallint_col % 3, count(*)
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from alltypesagg
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where day = 1
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group by 1, 2
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order by 2 desc nulls last, 1 asc nulls first
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limit 20
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---- RESULTS
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NULL,2,30
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0,2,90
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1,2,90
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2,2,120
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NULL,1,30
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0,1,90
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1,1,120
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2,1,90
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NULL,0,30
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0,0,120
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1,0,90
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2,0,90
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NULL,NULL,10
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---- TYPES
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TINYINT, SMALLINT, BIGINT
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====
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---- QUERY
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select date_string_col
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from alltypessmall
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order by date_string_col desc
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limit 50
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---- RESULTS
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'04/03/09'
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'04/03/09'
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'04/03/09'
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'04/03/09'
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'04/03/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/02/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'04/01/09'
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'03/03/09'
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'03/03/09'
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'03/03/09'
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'03/03/09'
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'03/03/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/02/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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'03/01/09'
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---- TYPES
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STRING
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====
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---- QUERY
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# Based on join queries
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select a.tinyint_col, b.id, a.string_col
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from alltypesagg a join alltypessmall b on (a.tinyint_col = b.id)
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where a.month=1
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and a.day=1
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and a.tinyint_col + b.tinyint_col < 5
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and a.string_col > '88'
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and b.bool_col = false
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order by a.string_col
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limit 5
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---- RESULTS
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1,1,'881'
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1,1,'891'
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1,1,'901'
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1,1,'91'
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1,1,'911'
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---- TYPES
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TINYINT, INT, STRING
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====
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---- QUERY
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select a.tinyint_col, b.id, a.string_col
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from alltypesagg a join alltypessmall b on (a.tinyint_col = b.id)
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where a.month=1
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and a.day=1
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and a.tinyint_col + b.tinyint_col < 5
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and a.string_col > '88'
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and b.bool_col = false
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order by a.string_col desc
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limit 5
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---- RESULTS
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1,1,'991'
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1,1,'981'
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1,1,'971'
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1,1,'961'
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1,1,'951'
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---- TYPES
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TINYINT, INT, STRING
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====
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---- QUERY
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select a.smallint_col, b.id, a.tinyint_col, c.id, a.int_col, b.float_col, c.string_col
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from alltypesagg a
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join alltypessmall b on (a.smallint_col = b.id)
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join alltypessmall c on (a.tinyint_col = c.id)
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where a.month=1
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and a.day=1
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and a.int_col > 899
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and b.float_col > 4.5
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and c.string_col < '7'
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and a.int_col + b.float_col + cast(c.string_col as float) < 1000
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order by c.string_col desc, a.smallint_col
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limit 10
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---- RESULTS
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6,6,6,6,906,6.599999904632568,'6'
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16,16,6,6,916,6.599999904632568,'6'
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56,56,6,6,956,6.599999904632568,'6'
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66,66,6,6,966,6.599999904632568,'6'
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5,5,5,5,905,5.5,'5'
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15,15,5,5,915,5.5,'5'
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55,55,5,5,955,5.5,'5'
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65,65,5,5,965,5.5,'5'
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34,34,4,4,934,9.899999618530273,'4'
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44,44,4,4,944,9.899999618530273,'4'
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---- TYPES
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SMALLINT, INT, TINYINT, INT, INT, FLOAT, STRING
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====
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---- QUERY
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# Order by a column that is not in the select list
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# Query with ordering column in select list
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# Don't include date_string_col, it comes back in random order.
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select int_col, tinyint_col
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from alltypessmall
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order by int_col desc
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limit 20
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---- RESULTS
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9,9
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9,9
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9,9
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9,9
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9,9
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9,9
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9,9
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9,9
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8,8
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8,8
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8,8
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8,8
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8,8
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8,8
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8,8
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8,8
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7,7
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7,7
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7,7
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7,7
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---- TYPES
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INT, TINYINT
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====
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---- QUERY
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# Same query with ordering col not in select list
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select tinyint_col
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from alltypessmall
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order by int_col desc
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limit 20
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---- RESULTS
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9
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9
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9
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|
9
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|
9
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9
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9
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9
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|
8
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|
8
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|
8
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|
8
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8
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|
8
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|
8
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|
8
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|
7
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|
7
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|
7
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|
7
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---- TYPES
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TINYINT
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====
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---- QUERY
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# Order by many exprs
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select year, month, count(*)
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from alltypes
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group by 1, 2
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order by 1, 2
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limit 100
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---- RESULTS
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2009,1,310
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2009,2,280
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2009,3,310
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2009,4,300
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2009,5,310
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2009,6,300
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2009,7,310
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2009,8,310
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2009,9,300
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2009,10,310
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2009,11,300
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2009,12,310
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2010,1,310
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2010,2,280
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2010,3,310
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2010,4,300
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2010,5,310
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2010,6,300
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2010,7,310
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2010,8,310
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2010,9,300
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2010,10,310
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2010,11,300
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2010,12,310
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---- TYPES
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INT, INT, BIGINT
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====
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---- QUERY
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|
# More Complex Ordering Exprs
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|
select int_col % 7, count(*), avg(tinyint_col)
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from alltypesagg
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group by 1
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order by avg(tinyint_col)
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limit 10
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---- RESULTS
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4,1430,4.984496124031008
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6,1420,4.9921875
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1,1430,4.992248062015504
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3,1430,5
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5,1430,5.007751937984496
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0,1420,5.0078125
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2,1430,5.015503875968992
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NULL,10,NULL
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---- TYPES
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INT, BIGINT, DOUBLE
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====
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|
---- QUERY
|
|
select int_col % 7, count(*), max(int_col)
|
|
from alltypesagg
|
|
group by 1
|
|
order by max(int_col)
|
|
limit 10
|
|
---- RESULTS
|
|
6,1420,993
|
|
0,1420,994
|
|
1,1430,995
|
|
2,1430,996
|
|
3,1430,997
|
|
4,1430,998
|
|
5,1430,999
|
|
NULL,10,NULL
|
|
---- TYPES
|
|
INT, BIGINT, INT
|
|
====
|
|
---- QUERY
|
|
select int_col % 5, count(*), avg(tinyint_col) - avg(float_col)
|
|
from alltypesagg
|
|
group by 1
|
|
order by avg(tinyint_col) - avg(float_col) desc
|
|
limit 10
|
|
---- RESULTS
|
|
NULL,10,NULL
|
|
1,2000,-544.8499889141322
|
|
2,2000,-544.9500045645237
|
|
0,1990,-545
|
|
3,2000,-545.0499953591824
|
|
4,2000,-545.1500110459327
|
|
---- TYPES
|
|
INT, BIGINT, DOUBLE
|
|
====
|
|
---- QUERY
|
|
select int_col
|
|
from alltypessmall
|
|
order by int_col % 5, int_col
|
|
limit 100
|
|
---- RESULTS
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
5
|
|
5
|
|
5
|
|
5
|
|
5
|
|
5
|
|
5
|
|
5
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
1
|
|
6
|
|
6
|
|
6
|
|
6
|
|
6
|
|
6
|
|
6
|
|
6
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
2
|
|
7
|
|
7
|
|
7
|
|
7
|
|
7
|
|
7
|
|
7
|
|
7
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
3
|
|
8
|
|
8
|
|
8
|
|
8
|
|
8
|
|
8
|
|
8
|
|
8
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
4
|
|
9
|
|
9
|
|
9
|
|
9
|
|
9
|
|
9
|
|
9
|
|
9
|
|
---- TYPES
|
|
INT
|
|
====
|
|
---- QUERY
|
|
# All select list items have an implicit alias. Test that the order by column ref
|
|
# "int_col" is correctly aliased to t1.int_col, and therefore it is not an
|
|
# ambiguous reference.
|
|
select t1.int_col from alltypessmall t1, alltypessmall t2 where t1.id = t2.id
|
|
order by int_col
|
|
limit 2
|
|
---- RESULTS
|
|
0
|
|
0
|
|
---- TYPES
|
|
INT
|
|
====
|
|
---- QUERY
|
|
select date_sub(timestamp_col, id), timestamp_col, id
|
|
from alltypessmall order by 1 limit 20
|
|
---- RESULTS
|
|
2008-12-10 00:24:00.960000000,2009-01-03 00:24:00.960000000,24
|
|
2008-12-11 00:23:00.930000000,2009-01-03 00:23:00.930000000,23
|
|
2008-12-12 00:22:00.910000000,2009-01-03 00:22:00.910000000,22
|
|
2008-12-13 00:21:00.900000000,2009-01-03 00:21:00.900000000,21
|
|
2008-12-14 00:19:00.810000000,2009-01-02 00:19:00.810000000,19
|
|
2008-12-14 00:20:00.900000000,2009-01-03 00:20:00.900000000,20
|
|
2008-12-15 00:18:00.730000000,2009-01-02 00:18:00.730000000,18
|
|
2008-12-16 00:17:00.660000000,2009-01-02 00:17:00.660000000,17
|
|
2008-12-16 00:24:00.960000000,2009-02-03 00:24:00.960000000,49
|
|
2008-12-17 00:16:00.600000000,2009-01-02 00:16:00.600000000,16
|
|
2008-12-17 00:23:00.930000000,2009-02-03 00:23:00.930000000,48
|
|
2008-12-18 00:15:00.550000000,2009-01-02 00:15:00.550000000,15
|
|
2008-12-18 00:22:00.910000000,2009-02-03 00:22:00.910000000,47
|
|
2008-12-19 00:14:00.510000000,2009-01-02 00:14:00.510000000,14
|
|
2008-12-19 00:21:00.900000000,2009-02-03 00:21:00.900000000,46
|
|
2008-12-19 00:24:00.960000000,2009-03-03 00:24:00.960000000,74
|
|
2008-12-20 00:13:00.480000000,2009-01-02 00:13:00.480000000,13
|
|
2008-12-20 00:19:00.810000000,2009-02-02 00:19:00.810000000,44
|
|
2008-12-20 00:20:00.900000000,2009-02-03 00:20:00.900000000,45
|
|
2008-12-20 00:23:00.930000000,2009-03-03 00:23:00.930000000,73
|
|
---- TYPES
|
|
TIMESTAMP, TIMESTAMP, INT
|
|
====
|
|
---- QUERY
|
|
# Test of order by with NULL tuple rows (from an outer join)
|
|
select t1.id, t1.int_col, t2.id, t2.int_col
|
|
from alltypesagg t1
|
|
left outer join alltypessmall t2
|
|
on (t1.int_col = t2.int_col)
|
|
order by t1.id,t2.id limit 10
|
|
---- TYPES
|
|
int,int,int,int
|
|
---- RESULTS
|
|
0,NULL,NULL,NULL
|
|
1,1,1,1
|
|
1,1,11,1
|
|
1,1,21,1
|
|
1,1,26,1
|
|
1,1,36,1
|
|
1,1,46,1
|
|
1,1,51,1
|
|
1,1,61,1
|
|
1,1,71,1
|
|
====
|
|
---- QUERY
|
|
# Test limit 0 from sub query
|
|
select sum(a.int_col) from
|
|
(select int_col from functional.alltypes order by int_col limit 0) a
|
|
---- TYPES
|
|
bigint
|
|
---- RESULTS
|
|
NULL
|
|
====
|
|
---- QUERY
|
|
# Test queries with divide by 0
|
|
select if(id % 2 = 0, cast(id/3 as int), -id) / if(id > 4 or id = 0, 0, 1) as v
|
|
from alltypestiny order by v desc limit 100;
|
|
---- TYPES
|
|
DOUBLE
|
|
---- RESULTS
|
|
inf
|
|
1
|
|
0
|
|
-1
|
|
-3
|
|
-inf
|
|
-inf
|
|
-nan
|
|
====
|
|
---- QUERY
|
|
# Test queries with divide by 0
|
|
select if(id % 2 = 0, cast(id/3 as int), -id) / if(id > 4 or id = 0, 0, 1) as v
|
|
from alltypestiny order by v asc limit 100;
|
|
---- TYPES
|
|
DOUBLE
|
|
---- RESULTS
|
|
-nan
|
|
-inf
|
|
-inf
|
|
-3
|
|
-1
|
|
0
|
|
1
|
|
inf
|
|
====
|