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database stuff

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This commit is contained in:
Wolfgang Hottgenroth 2023-02-08 13:53:24 +01:00
parent ae8905e43c
commit df45cb5daa
Signed by: wn
GPG Key ID: 836E9E1192A6B132
2 changed files with 164 additions and 0 deletions
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7
schema → schema/create.sql
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@ -23,3 +23,10 @@ select create_hypertable('pv_power_measurement_t', 'time');
grant insert on pv_power_measurement_t to nodered; grant insert on pv_power_measurement_t to nodered;
grant select on pv_power_measurement_t to grafana; grant select on pv_power_measurement_t to grafana;
create view pv_stats_v as
select time, importEnergyActive, importEnergyReactive, exportEnergyActive, exportEnergyReactive,
powerApparent, powerActive, powerReactive, powerDemandPositive, powerDemandReverse, powerDemand,
factor, angle, voltage, current
from pv_power_measurement_t
order by time;

157
schema/queries.sql Normal file
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@ -0,0 +1,157 @@
-- current year's gain
with
first_day_in_year as (
select
date_trunc('day', min(time)) as day
from pv_power_measurement_t
where
time between date_trunc('year', time) and now()
),
first_value as (
select
time_bucket('1 day', time) as interval,
first(exportenergyactive, time) as energy
from pv_power_measurement_t
where
time between (select day from first_day_in_year) and (select day from first_day_in_year) + interval '1 day' and
status = 'Ok'
group by interval
),
last_value as (
select
time_bucket('1 day', time) as interval,
last(exportenergyactive, time) as energy
from pv_power_measurement_t
where
time between date_trunc('day', now()) and date_trunc('day', now()) + interval '1 day' and
status = 'Ok'
group by interval
)
select
extract(year from (select day from first_day_in_year))::text as period_value,
'Year' as period_name,
(select energy from last_value) - (select energy from first_value) as yield;
-- current month's gain
with
first_day_in_month as (
select
date_trunc('day', min(time)) as day
from pv_power_measurement_t
where
time between date_trunc('month', time) and now()
),
first_value as (
select
time_bucket('1 day', time) as interval,
first(exportenergyactive, time) as energy
from pv_power_measurement_t
where
time between (select day from first_day_in_month) and (select day from first_day_in_month) + interval '1 day' and
status = 'Ok'
group by interval
),
last_value as (
select
time_bucket('1 day', time) as interval,
last(exportenergyactive, time) as energy
from pv_power_measurement_t
where
time between date_trunc('day', now()) and date_trunc('day', now()) + interval '1 day' and
status = 'Ok'
group by interval
)
select
to_char((select day from first_day_in_month), 'Month') as period_value,
'Month' as period_name,
(select energy from last_value) - (select energy from first_value) as yield;
-- current day's gain
with
values as (
select
time_bucket('1 day', time) as interval,
first(exportenergyactive, time) as first_value,
last(exportenergyactive, time) as last_value
from pv_power_measurement_t
where time >= date_trunc('day', now())
group by interval
)
select
(select interval from values)::date::text as period_value,
'Day' as period_name,
(select last_value from values) - (select first_value from values) as yield;
-- all in one
with
first_day_in_year as (
select
date_trunc('day', min(time)) as day
from pv_power_measurement_t
where
time between date_trunc('year', time) and now()
),
first_value_in_year as (
select
time_bucket('1 day', time) as interval,
first(exportenergyactive, time) as energy
from pv_power_measurement_t
where
time between (select day from first_day_in_year) and (select day from first_day_in_year) + interval '1 day' and
status = 'Ok'
group by interval
),
first_day_in_month as (
select
date_trunc('day', min(time)) as day
from pv_power_measurement_t
where
time between date_trunc('month', time) and now()
),
first_value_in_month as (
select
time_bucket('1 day', time) as interval,
first(exportenergyactive, time) as energy
from pv_power_measurement_t
where
time between (select day from first_day_in_month) and (select day from first_day_in_month) + interval '1 day' and
status = 'Ok'
group by interval
),
first_value_in_day as (
select
time_bucket('1 day', time) as interval,
first(exportenergyactive, time) as energy
from pv_power_measurement_t
where time >= date_trunc('day', now())
group by interval
),
last_value as (
select
time_bucket('1 day', time) as interval,
last(exportenergyactive, time) as energy
from pv_power_measurement_t
where
time between date_trunc('day', now()) and date_trunc('day', now()) + interval '1 day' and
status = 'Ok'
group by interval
)
select
extract(year from (select day from first_day_in_year))::text as period_value,
'Year' as period_name,
round(((select energy from last_value) - (select energy from first_value_in_year))::numeric, 2) as yield
union
select
to_char((select day from first_day_in_month), 'Month') as period_value,
'Month' as period_name,
round(((select energy from last_value) - (select energy from first_value_in_month))::numeric, 2) as yield
union
select
now()::date::text as period_value,
'Day' as period_name,
round(((select energy from last_value) - (select energy from first_value_in_day))::numeric, 2) as yield;