TDengine/test/cases/11-Functions/resource/ans/variance.csv

1	taos> select VARIANCE(current) from ts_4893.meters
2	variance(current) |
3	============================
4	1.33250006771082 |
5	taos> select VARIANCE(current) from ts_4893.meters interval(1d) order by 1 limit 10
6	variance(current) |
7	============================
8	0.70270236872882 |
9	0.7033161874832 |
10	0.705108381402508 |
11	0.705108381402508 |
12	0.706550970594425 |
13	0.713307092277611 |
14	0.716868426325289 |
15	0.717430199108789 |
16	0.717718701247475 |
17	0.719483011074183 |
18	taos> select VARIANCE(id) from ts_4893.meters
19	variance(id) |
20	============================
21	8333333.24999998 |
22	taos> select VARIANCE(id) from ts_4893.meters interval(1d) limit 10
23	variance(id) |
24	============================
25	21.25 |
26	70 |
27	70 |
28	70 |
29	70 |
30	65.25 |
31	70 |
32	70 |
33	70 |
34	70 |
35	taos> select VARIANCE(id) from ts_4893.meters where id > 100
36	variance(id) |
37	============================
38	8165849.99999995 |
39	taos> select VARIANCE(id) from ts_4893.meters interval(1d) order by 1 limit 10
40	variance(id) |
41	============================
42	21.25 |
43	30 |
44	65.25 |
45	65.25 |
46	65.25 |
47	65.25 |
48	65.25 |
49	65.25 |
50	65.25 |
51	65.25 |
52	taos> select variance(null) from ts_4893.meters
53	variance(null) |
54	============================
55	NULL |
56	taos> select variance(id) from ts_4893.d0
57	variance(id) |
58	============================
59	8333333.24999998 |
60	taos> select variance(current) from ts_4893.d0
61	variance(current) |
62	============================
63	1.33250006771082 |
64	taos> select variance(voltage) from ts_4893.meters
65	variance(voltage) |
66	============================
67	8.27402043999999 |
68	taos> select variance(voltage) from ts_4893.meters where voltage is not null
69	variance(voltage) |
70	============================
71	8.27402043999999 |
72	taos> select variance(phase) from ts_4893.meters
73	variance(phase) |
74	============================
75	0.0832873384334247 |
76	taos> select variance(phase) from ts_4893.meters where ts between '2023-01-01 00:00:00' and '2023-12-31 23:59:59'
77	variance(phase) |
78	============================
79	0.0829874118660322 |
80	taos> select variance(total_voltage) from (select sum(voltage) as total_voltage from ts_4893.meters group by location)
81	variance(total_voltage) |
82	============================
83	0 |
84	==============================
85	1.33 |
86	============================
87	1.77555643044935 |
88	taos> select log(variance(voltage) + 1) from ts_4893.meters
89	log(variance(voltage) + 1) |
90	=============================
91	2.22721698997805 |
92	groupid | variance(voltage) |
93	======================================
94	1 | 8.27402043999999 |
95	location | variance(current) |
96	=================================================
97	beijing | 1.33250006771082 |
98	location | variance(voltage) |
99	=================================================
100	beijing | 8.27402043999999 |