139 lines
4.5 KiB
Plaintext
139 lines
4.5 KiB
Plaintext
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taos> select STDDEV(current) from ts_4893.meters
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stddev(current) |
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============================
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1.154339668872967 |
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taos> select STDDEV(current) from ts_4893.meters interval(1d) order by 1 limit 10
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stddev(current) |
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============================
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0.838273408289689 |
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0.838639277789961 |
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0.839707477142884 |
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0.839707477142884 |
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0.840565842326814 |
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0.844574982206356 |
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0.846680761198646 |
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0.847012832740024 |
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0.847182714923872 |
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0.848223610563545 |
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taos> select STDDEV(id) from ts_4893.meters
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stddev(id) |
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============================
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2886.751331514371941 |
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taos> select STDDEV(id) from ts_4893.meters interval(1d) limit 10
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stddev(id) |
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============================
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4.609772228646444 |
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8.366600265340756 |
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8.366600265340756 |
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8.366600265340756 |
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8.366600265340756 |
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8.077747210701755 |
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8.366600265340756 |
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8.366600265340756 |
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8.366600265340756 |
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8.366600265340756 |
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taos> select STDDEV(id) from ts_4893.meters where id > 100
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stddev(id) |
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============================
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2857.595142773027419 |
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taos> select STDDEV(id) from ts_4893.meters interval(1d) order by 1 limit 10
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stddev(id) |
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============================
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4.609772228646444 |
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5.477225575051661 |
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8.077747210701755 |
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8.077747210701755 |
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8.077747210701755 |
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8.077747210701755 |
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8.077747210701755 |
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8.077747210701755 |
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8.077747210701755 |
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8.077747210701755 |
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taos> select stddev_pop(null) from ts_4893.meters
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stddev_pop(null) |
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NULL |
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taos> select stddev_pop(id) from ts_4893.d0
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stddev_pop(id) |
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============================
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2886.751331514371941 |
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taos> select stddev_pop(id) from ts_4893.meters
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stddev_pop(id) |
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============================
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2886.751331514371941 |
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taos> select stddev_pop(current) from ts_4893.d0
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stddev_pop(current) |
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============================
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1.154339668872967 |
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taos> select stddev_pop(current) from ts_4893.meters
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stddev_pop(current) |
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============================
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1.154339668872967 |
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taos> select stddev_pop(voltage) from ts_4893.meters
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stddev_pop(voltage) |
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============================
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2.876459705957324 |
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taos> select stddev_pop(voltage) from ts_4893.meters where voltage is not null
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stddev_pop(voltage) |
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============================
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2.876459705957324 |
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taos> select stddev_pop(phase) from ts_4893.meters
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stddev_pop(phase) |
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============================
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0.288595458155823 |
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taos> select stddev_pop(phase) from ts_4893.meters where ts between '2023-01-01 00:00:00' and '2023-12-31 23:59:59'
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stddev_pop(phase) |
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============================
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0.288075357974611 |
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taos> select stddev_pop(total_voltage) from (select sum(voltage) as total_voltage from ts_4893.meters group by location)
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stddev_pop(total_voltage) |
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============================
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0.000000000000000 |
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taos> select round(stddev_pop(current), 2) from ts_4893.meters
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round(stddev_pop(current), 2) |
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================================
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1.150000000000000e+00 |
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taos> select pow(stddev_pop(current), 2) from ts_4893.meters
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pow(stddev_pop(current), 2) |
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==============================
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1.332500071133751e+00 |
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taos> select log(stddev_pop(voltage) + 1) from ts_4893.meters
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log(stddev_pop(voltage) + 1) |
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===============================
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1.354922290183882e+00 |
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taos> select groupid, stddev_pop(voltage) from ts_4893.meters group by groupid order by groupid
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groupid | stddev_pop(voltage) |
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======================================
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1 | 2.876459705957324 |
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taos> select location, stddev_pop(current) from ts_4893.meters group by location order by location
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location | stddev_pop(current) |
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=================================================
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beijing | 1.154339668872967 |
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taos> select location, stddev_pop(voltage) from ts_4893.meters group by location order by location
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location | stddev_pop(voltage) |
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=================================================
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beijing | 2.876459705957324 |
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