jprdonnelly/impala
1
0
Fork 0
mirror of https://github.com/apache/impala.git synced 2026-01-02 21:00:35 -05:00
Code Issues Projects Releases Wiki Activity
Files
09ff2fca2ecce1544e4e589a831fcfb02edc4f13
impala/testdata/workloads/functional-query/queries/QueryTest/decimal.test
Michael Ho 637cc3e447 IMPALA-4821: Update AVG() for DECIMAL_V2 
This change implements the DECIMAL_V2's behavior for AVG().
The differences with DECIMAL_V1 are:

1. The output type has a minimum scale of 6. This is similar
to MS SQL's behavior which takes the max of 6 and the input
type's scale. We deviate from MS SQL in the output's precision
which is always set to 38. We use the smallest precision which
can store the output. A key insight is that the output of AVG()
is no wider than the inputs. Precision only needs to be adjusted
when the scale is augmented. Using a smaller precision avoids
potential loss of precision in subsequent decimal operations
(e.g. division) if AVG() is a subexpression. Please note that
the output type is different from SUM()/COUNT() as the latter
can have a much larger scale.

2. Due to a minimum of 6 decimal places for the output,
AVG() for decimal values whose whole number part exceeds 32
decimal places (e.g. DECIMAL(38,4), DECIMAL(33,0)) will
always overflow as the scale is augmented to 6. Certain
decimal types which work with AVG() in DECIMAL_V1 no longer
work in DECIMAL_V2.

Change-Id: I28f5ef0370938440eb5b1c6d29b2f24e6f88499f
Reviewed-on: http://gerrit.cloudera.org:8080/6038
Reviewed-by: Dan Hecht <dhecht@cloudera.com>
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: Impala Public Jenkins
2017-02-22 06:31:14 +00:00

410 lines
9.6 KiB
Plaintext
Raw Blame History

====
---- QUERY
select count(*),count(c1),count(c2) from decimal_tiny
---- RESULTS
100,100,100
---- TYPES
bigint,bigint,bigint
====
---- QUERY
select * from decimal_tiny where c1 = cast(0.1111 as decimal(5,4))
---- RESULTS
0.1111,101.22222,0.1
---- TYPES
DECIMAL, DECIMAL, DECIMAL
====
---- QUERY
select count(*) from decimal_tiny where c1 != cast(0.1111 as decimal(5,4))
---- RESULTS
99
---- TYPES
bigint
====
---- QUERY
select count(*) from decimal_tiny where c1 = c2
---- RESULTS
0
---- TYPES
bigint
====
---- QUERY
select min(c1), max(c2) from decimal_tiny
---- RESULTS
0.0000,220.99978
---- TYPES
decimal,decimal
====
---- QUERY
select sum(d1), sum(d2), sum(d3), sum(d4), sum(d5) from decimal_tbl
---- RESULTS
161111,3332,13717.2838257900,0.61728394500000000000000000000000000000,12361.02889
---- TYPES
decimal,decimal,decimal,decimal,decimal
====
---- QUERY
select count(*), sum(d1), sum(d2), sum(d3), sum(d4), sum(d5) from decimal_tbl where d6 = 1
---- RESULTS
5,161111,3332,13717.2838257900,0.61728394500000000000000000000000000000,12361.02889
---- TYPES
bigint,decimal,decimal,decimal,decimal,decimal
====
---- QUERY
select count(*), sum(d1), sum(d2), sum(d3), sum(d4), sum(d5) from decimal_tbl where d6 = 0
---- RESULTS
0,NULL,NULL,NULL,NULL,NULL
---- TYPES
bigint,decimal,decimal,decimal,decimal,decimal
====
---- QUERY
select c3, count(*) from decimal_tiny group by c3
---- RESULTS
0.3,10
0.5,10
0.8,10
0.4,10
0.9,10
0.2,10
0.0,10
0.6,10
0.7,10
0.1,10
---- TYPES
decimal,bigint
====
---- QUERY
select c3, max(c1 + c2) from decimal_tiny group by c3
having max(c1 + c2) > cast('225' as decimal(18,5))
---- RESULTS
0.5,226.66540
0.8,230.66536
0.4,225.33208
0.9,231.99868
0.6,227.99872
0.7,229.33204
---- TYPES
decimal,decimal
====
---- QUERY
select ndv(c1), distinctpc(c2), distinctpcsa(c1 + c2) from decimal_tiny
---- RESULTS
98,94,103
---- TYPES
bigint,bigint,bigint
====
---- QUERY
select ndv(d1), distinctpc(d1), distinctpcsa(d1), count(distinct d1)
from decimal_tbl;
---- RESULTS
4,5,4,4
---- TYPES
bigint,bigint,bigint,bigint
====
---- QUERY
select c1 + c2 from decimal_tiny order by 1 limit 5
---- RESULTS
100.00000
101.33332
102.66664
103.99996
105.33328
---- TYPES
decimal
====
---- QUERY
select c1 + c2 from decimal_tiny order by 1 desc limit 5
---- RESULTS
231.99868
230.66536
229.33204
227.99872
226.66540
---- TYPES
decimal
====
---- QUERY
select t1.*,t2.* from decimal_tiny t1
join decimal_tiny t2
on t1.c1=t2.c1
order by t1.c1 desc limit 3
---- RESULTS
10.9989,220.99978,0.9,10.9989,220.99978,0.9
10.8878,219.77756,0.8,10.8878,219.77756,0.8
10.7767,218.55534,0.7,10.7767,218.55534,0.7
---- TYPES
DECIMAL, DECIMAL, DECIMAL, DECIMAL, DECIMAL, DECIMAL
====
---- QUERY
select count(d1), count(d2), count(d3), count(d4), count(d5), count(d6) from decimal_tbl;
---- RESULTS
5,5,5,5,5,5
---- TYPES
bigint,bigint,bigint,bigint,bigint,bigint
====
---- QUERY
select d1, count(d2), count(d3), count(d4), count(d5), count(d6) from decimal_tbl group by d1;
---- RESULTS
132842,1,1,1,1,1
2345,1,1,1,1,1
1234,1,1,1,1,1
12345,2,2,2,2,2
---- TYPES
decimal,bigint,bigint,bigint,bigint,bigint
====
---- QUERY
select min(d1), min(d2), min(d3), min(d4), min(d5), min(d6) from decimal_tbl;
---- RESULTS
1234,111,1.2345678900,0.12345678900000000000000000000000000000,0.10000,1
---- TYPES
decimal,decimal,decimal,decimal,decimal,decimal
====
---- QUERY
select d1, min(d2), min(d3), min(d4), min(d5), min(d6) from decimal_tbl group by d1;
---- RESULTS
132842,333,12345.6789000000,0.12345678900000000000000000000000000000,0.77889,1
2345,111,12.3456789000,0.12345678900000000000000000000000000000,3.14100,1
1234,2222,1.2345678900,0.12345678900000000000000000000000000000,12345.78900,1
12345,333,123.4567890000,0.12345678900000000000000000000000000000,0.10000,1
---- TYPES
decimal,decimal,decimal,decimal,decimal,decimal
====
---- QUERY
select max(d1), max(d2), max(d3), max(d4), max(d5), max(d6) from decimal_tbl;
---- RESULTS
132842,2222,12345.6789000000,0.12345678900000000000000000000000000000,12345.78900,1
---- TYPES
decimal,decimal,decimal,decimal,decimal,decimal
====
---- QUERY
select d1, max(d2), max(d3), max(d4), max(d5), max(d6) from decimal_tbl group by d1;
---- RESULTS
132842,333,12345.6789000000,0.12345678900000000000000000000000000000,0.77889,1
2345,111,12.3456789000,0.12345678900000000000000000000000000000,3.14100,1
1234,2222,1.2345678900,0.12345678900000000000000000000000000000,12345.78900,1
12345,333,1234.5678900000,0.12345678900000000000000000000000000000,11.22000,1
---- TYPES
decimal,decimal,decimal,decimal,decimal,decimal
====
---- QUERY
select ndv(d1), ndv(d2), ndv(d3), ndv(d4), ndv(d5), ndv(d6) from decimal_tbl;
---- RESULTS
4,3,5,1,5,1
---- TYPES
bigint,bigint,bigint,bigint,bigint,bigint
====
---- QUERY
select d1, ndv(d2), ndv(d3), ndv(d4), ndv(d5), ndv(d6) from decimal_tbl group by d1;
---- RESULTS
132842,1,1,1,1,1
2345,1,1,1,1,1
1234,1,1,1,1,1
12345,1,2,1,2,1
---- TYPES
decimal,bigint,bigint,bigint,bigint,bigint
====
---- QUERY
select a.c1 from decimal_tiny a left semi join decimal_tiny b on a.c1=b.c3
---- RESULTS
0.0000
---- TYPES
decimal
====
---- QUERY
select * from decimal_tiny
---- RESULTS
0.0000,100.00000,0.0
0.1111,101.22222,0.1
0.2222,102.44444,0.2
0.3333,103.66666,0.3
0.4444,104.88888,0.4
0.5555,106.11110,0.5
0.6666,107.33332,0.6
0.7777,108.55554,0.7
0.8888,109.77776,0.8
0.9999,110.99998,0.9
1.1110,112.22220,0.0
1.2221,113.44442,0.1
1.3332,114.66664,0.2
1.4443,115.88886,0.3
1.5554,117.11108,0.4
1.6665,118.33330,0.5
1.7776,119.55552,0.6
1.8887,120.77774,0.7
1.9998,121.99996,0.8
2.1109,123.22218,0.9
2.2220,124.44440,0.0
2.3331,125.66662,0.1
2.4442,126.88884,0.2
2.5553,128.11106,0.3
2.6664,129.33328,0.4
2.7775,130.55550,0.5
2.8886,131.77772,0.6
2.9997,132.99994,0.7
3.1108,134.22216,0.8
3.2219,135.44438,0.9
3.3330,136.66660,0.0
3.4441,137.88882,0.1
3.5552,139.11104,0.2
3.6663,140.33326,0.3
3.7774,141.55548,0.4
3.8885,142.77770,0.5
3.9996,143.99992,0.6
4.1107,145.22214,0.7
4.2218,146.44436,0.8
4.3329,147.66658,0.9
4.4440,148.88880,0.0
4.5551,150.11102,0.1
4.6662,151.33324,0.2
4.7773,152.55546,0.3
4.8884,153.77768,0.4
4.9995,154.99990,0.5
5.1106,156.22212,0.6
5.2217,157.44434,0.7
5.3328,158.66656,0.8
5.4439,159.88878,0.9
5.5550,161.11100,0.0
5.6661,162.33322,0.1
5.7772,163.55544,0.2
5.8883,164.77766,0.3
5.9994,165.99988,0.4
6.1105,167.22210,0.5
6.2216,168.44432,0.6
6.3327,169.66654,0.7
6.4438,170.88876,0.8
6.5549,172.11098,0.9
6.6660,173.33320,0.0
6.7771,174.55542,0.1
6.8882,175.77764,0.2
6.9993,176.99986,0.3
7.1104,178.22208,0.4
7.2215,179.44430,0.5
7.3326,180.66652,0.6
7.4437,181.88874,0.7
7.5548,183.11096,0.8
7.6659,184.33318,0.9
7.7770,185.55540,0.0
7.8881,186.77762,0.1
7.9992,187.99984,0.2
8.1103,189.22206,0.3
8.2214,190.44428,0.4
8.3325,191.66650,0.5
8.4436,192.88872,0.6
8.5547,194.11094,0.7
8.6658,195.33316,0.8
8.7769,196.55538,0.9
8.8880,197.77760,0.0
8.9991,198.99982,0.1
9.1102,200.22204,0.2
9.2213,201.44426,0.3
9.3324,202.66648,0.4
9.4435,203.88870,0.5
9.5546,205.11092,0.6
9.6657,206.33314,0.7
9.7768,207.55536,0.8
9.8879,208.77758,0.9
9.9990,209.99980,0.0
10.1101,211.22202,0.1
10.2212,212.44424,0.2
10.3323,213.66646,0.3
10.4434,214.88868,0.4
10.5545,216.11090,0.5
10.6656,217.33312,0.6
10.7767,218.55534,0.7
10.8878,219.77756,0.8
10.9989,220.99978,0.9
---- TYPES
DECIMAL, DECIMAL, DECIMAL
====
---- QUERY
# Test group-by with decimal
select d1, d2, sum(d3), sum(d4), sum(d5), sum(d6) from decimal_tbl group by d1,d2;
---- RESULTS
132842,333,12345.6789000000,0.12345678900000000000000000000000000000,0.77889,1
12345,333,1358.0246790000,0.24691357800000000000000000000000000000,11.32000,2
1234,2222,1.2345678900,0.12345678900000000000000000000000000000,12345.78900,1
2345,111,12.3456789000,0.12345678900000000000000000000000000000,3.14100,1
---- TYPES
decimal,decimal,decimal,decimal,decimal,decimal
====
---- QUERY
# IMPALA-1559: FIRST_VALUE rewrite function intermediate type not matching slot type
select
first_value(c3) over (order by c1 rows between 92 preceding and current row),
first_value(c2) over (order by c1 rows between 92 preceding and 1 preceding)
from decimal_tiny where c3 = 0.0
---- RESULTS: VERIFY_IS_EQUAL_SORTED
0.0,NULL
0.0,100.00000
0.0,100.00000
0.0,100.00000
0.0,100.00000
0.0,100.00000
0.0,100.00000
0.0,100.00000
0.0,100.00000
0.0,100.00000
---- TYPES
DECIMAL, DECIMAL
====
---- QUERY
select histogram(d1) from decimal_tbl;
---- RESULTS
'1234, 2345, 12345, 12345, 132842'
---- TYPES
STRING
====
---- QUERY
select appx_median(c1), appx_median(c2), appx_median(c3) from decimal_tiny
---- RESULTS
5.5550,161.11100,0.5
---- TYPES
DECIMAL, DECIMAL, DECIMAL
====
---- QUERY
select sample(d1) from decimal_tbl;
---- TYPES
# Results are unstable, just check that this doesn't crash
STRING
====
---- QUERY
# IMPALA-1837: Handle loss of precision when implicitly casting a literal to a decimal.
# Here "1.8" will be implicitly cast to a decimal(38,38), losing precision.
select coalesce(1.8, cast(0 as decimal(38,38)))
---- TYPES
DECIMAL
---- RESULTS
0.00000000000000000000000000000000000000
---- ERRORS
UDF WARNING: Expression overflowed, returning NULL
====
---- QUERY
# IMPALA-1837: Handle loss of precision when implicitly casting a literal to a decimal.
# Here "1.8" will be implicitly cast to a decimal(38,38), losing precision.
# No error is reported because the overflowed expr is never evaluated.
select coalesce(cast(0 as decimal(38,38)), 1.8)
---- TYPES
DECIMAL
---- RESULTS
0.00000000000000000000000000000000000000
---- ERRORS
====
---- QUERY
# IMPALA-2259 - wrong overload chosen for analytic function.
select lag(c1, 1) over (order by c1), c1
from decimal_tiny
order by c1
limit 10
---- RESULTS
NULL,0.0000
0.0000,0.1111
0.1111,0.2222
0.2222,0.3333
0.3333,0.4444
0.4444,0.5555
0.5555,0.6666
0.6666,0.7777
0.7777,0.8888
0.8888,0.9999
---- TYPES
DECIMAL, DECIMAL
====
Reference in New Issue View Git Blame Copy Permalink