# name: test/sql/aggregate/aggregates/test_stddev.test
# description: STDDEV aggregations
# group: [aggregates]

statement ok
create table stddev_test(val integer, grp integer)

statement ok
insert into stddev_test values (42, 1), (43, 1), (42, 2), (1000, 2), (NULL, 1), (NULL, 3)

query I
SELECT stddev_samp(1)
----
NULL

query I
SELECT var_samp(1)
----
NULL

# stddev_samp
query R
select round(stddev_samp(val), 1) from stddev_test
----
478.800000

query R
select round(stddev_samp(val), 1) from stddev_test  where val is not null
----
478.800000

query IRRI
select grp, sum(val), round(stddev_samp(val), 1), min(val) from stddev_test group by grp order by grp
----
1	85.000000	0.700000	42
2	1042.000000	677.400000	42
3	NULL	NULL	NULL

query IRRI
select grp, sum(val), round(stddev_samp(val), 1), min(val) from stddev_test where val is not null group by grp order by grp
----
1	85.000000	0.700000	42
2	1042.000000	677.400000	42

# stddev_pop
query R
select round(stddev_pop(val), 1) from stddev_test
----
414.700000

query R
select round(stddev_pop(val), 1) from stddev_test  where val is not null
----
414.700000

query IRRI
select grp, sum(val), round(stddev_pop(val), 1), min(val) from stddev_test group by grp order by grp
----
1	85.000000	0.500000	42
2	1042.000000	479.000000	42
3	NULL	NULL	NULL

query IRRI
select grp, sum(val), round(stddev_pop(val), 1), min(val) from stddev_test where val is not null group by grp order by grp
----
1	85.000000	0.500000	42
2	1042.000000	479.000000	42

# var_samp
query R
select round(var_samp(val), 1) from stddev_test
----
229281.600000

query R
select round(variance(val), 1) from stddev_test
----
229281.600000

query R
select round(var_samp(val), 1) from stddev_test  where val is not null
----
229281.600000

query IRRI
select grp, sum(val), round(var_samp(val), 1), min(val) from stddev_test group by grp order by grp
----
1	85.000000	0.500000	42
2	1042.000000	458882.000000	42
3	NULL	NULL	NULL

query IRRI
select grp, sum(val), round(var_samp(val), 1), min(val) from stddev_test where val is not null group by grp order by grp
----
1	85.000000	0.500000	42
2	1042.000000	458882.000000	42

# var_pop
query R
select round(var_pop(val), 1) from stddev_test
----
171961.200000

query R
select round(var_pop(val), 1) from stddev_test  where val is not null
----
171961.200000

query IRRI
select grp, sum(val), round(var_pop(val), 2), min(val) from stddev_test group by grp order by grp
----
1	85.000000	0.250000	42
2	1042.000000	229441.000000	42
3	NULL	NULL	NULL

query IRRI
select grp, sum(val), round(var_pop(val), 2), min(val) from stddev_test where val is not null group by grp order by grp
----
1	85.000000	0.250000	42
2	1042.000000	229441.000000	42

statement ok
create table stddev_test_alias(val integer, grp integer)

statement ok
insert into stddev_test_alias values (42, 1), (43, 1), (42, 2), (1000, 2), (NULL, 1), (NULL, 3)

# stddev_samp
query R
select round(stddev(val), 1) from stddev_test_alias
----
478.800000

query I
select stddev(0) from range(10)
----
0

statement error
select stddev(a) from (values (1e301), (-1e301)) tbl(a)
----
Out of Range Error: STDDEV_SAMP is out of range

statement error
select var_samp(a) from (values (1e301), (-1e301)) tbl(a)
----
Out of Range Error: VARSAMP is out of range

statement error
select var_pop(a) from (values (1e301), (-1e301)) tbl(a)
----
Out of Range Error: VARPOP is out of range