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https://github.com/SyncrowIOT/backend.git
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occupancy duration procedures
This commit is contained in:
Dona Maria Absi
@ -0,0 +1,109 @@
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-- Step 1: Get device presence events with previous timestamps
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WITH start_date AS (
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SELECT
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d.uuid AS device_id,
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d.space_device_uuid AS space_id,
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l.value,
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l.event_time::timestamp AS event_time,
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LAG(l.event_time::timestamp) OVER (PARTITION BY d.uuid ORDER BY l.event_time) AS prev_timestamp
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FROM device d
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LEFT JOIN "device-status-log" l
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ON d.uuid = l.device_id
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LEFT JOIN product p
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ON p.uuid = d.product_device_uuid
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WHERE p.cat_name = 'hps'
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AND l.code = 'presence_state'
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),
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-- Step 2: Identify periods when device reports "none"
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device_none_periods AS (
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SELECT
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space_id,
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device_id,
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event_time AS empty_from,
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LEAD(event_time) OVER (PARTITION BY device_id ORDER BY event_time) AS empty_until
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FROM start_date
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WHERE value = 'none'
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),
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-- Step 3: Clip the "none" periods to the edges of each day
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clipped_device_none_periods AS (
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SELECT
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space_id,
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GREATEST(empty_from, DATE_TRUNC('day', empty_from)) AS clipped_from,
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LEAST(empty_until, DATE_TRUNC('day', empty_until) + INTERVAL '1 day') AS clipped_until
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FROM device_none_periods
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WHERE empty_until IS NOT NULL
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),
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-- Step 4: Break multi-day periods into daily intervals
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generated_daily_intervals AS (
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SELECT
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space_id,
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gs::date AS day,
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GREATEST(clipped_from, gs) AS interval_start,
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LEAST(clipped_until, gs + INTERVAL '1 day') AS interval_end
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FROM clipped_device_none_periods,
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LATERAL generate_series(DATE_TRUNC('day', clipped_from), DATE_TRUNC('day', clipped_until), INTERVAL '1 day') AS gs
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),
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-- Step 5: Merge overlapping or adjacent intervals per day
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merged_intervals AS (
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SELECT
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space_id,
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day,
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interval_start,
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interval_end
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FROM (
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SELECT
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space_id,
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day,
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interval_start,
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interval_end,
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LAG(interval_end) OVER (PARTITION BY space_id, day ORDER BY interval_start) AS prev_end
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FROM generated_daily_intervals
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) sub
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WHERE prev_end IS NULL OR interval_start > prev_end
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),
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-- Step 6: Sum up total missing seconds (device reported "none") per day
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missing_seconds_per_day AS (
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SELECT
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space_id,
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day AS missing_date,
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SUM(EXTRACT(EPOCH FROM (interval_end - interval_start))) AS total_missing_seconds
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FROM merged_intervals
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GROUP BY space_id, day
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),
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-- Step 7: Calculate total occupied time per day (86400 - missing)
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occupied_seconds_per_day AS (
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SELECT
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space_id,
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missing_date as event_date,
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86400 - total_missing_seconds AS total_occupied_seconds,
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(86400 - total_missing_seconds)/86400*100 as occupancy_prct
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FROM missing_seconds_per_day
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)
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-- Final Output
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, final_data as (
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SELECT space_id,
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event_date,
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occupancy_prct
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FROM occupied_seconds_per_day
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ORDER BY 1,2
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)
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INSERT INTO public."space-daily-occupancy-duration" (
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space_uuid,
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event_date,
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occupancy_percentage
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)
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select space_id,
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event_date,
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occupancy_prct
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FROM final_data
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ON CONFLICT (space_uuid, event_date) DO UPDATE
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SET
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occupancy_percentage = EXCLUDED.occupancy_percentage;
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@ -0,0 +1,15 @@
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WITH params AS (
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SELECT
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$1::uuid AS space_uuid,
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TO_DATE(NULLIF($2, ''), 'YYYY-MM-DD') AS event_date
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)
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SELECT sdod.*
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FROM public."space-daily-occupancy-duration" AS sdod
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JOIN params P ON true
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WHERE sdod.space_uuid = P.space_uuid
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AND (
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P.event_year IS NULL
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OR sdod.event_date = P.event_year
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)
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ORDER BY space_uuid, event_date;
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@ -0,0 +1,117 @@
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WITH params AS (
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SELECT
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TO_DATE(NULLIF($1, ''), 'YYYY-MM-DD') AS event_date,
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$2::uuid AS space_id
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)
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, start_date AS (
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SELECT
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d.uuid AS device_id,
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d.space_device_uuid AS space_id,
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l.value,
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l.event_time::timestamp AS event_time,
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LAG(l.event_time::timestamp) OVER (PARTITION BY d.uuid ORDER BY l.event_time) AS prev_timestamp
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FROM device d
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LEFT JOIN "device-status-log" l
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ON d.uuid = l.device_id
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LEFT JOIN product p
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ON p.uuid = d.product_device_uuid
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WHERE p.cat_name = 'hps'
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AND l.code = 'presence_state'
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),
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-- Step 2: Identify periods when device reports "none"
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device_none_periods AS (
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SELECT
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space_id,
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device_id,
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event_time AS empty_from,
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LEAD(event_time) OVER (PARTITION BY device_id ORDER BY event_time) AS empty_until
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FROM start_date
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WHERE value = 'none'
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),
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-- Step 3: Clip the "none" periods to the edges of each day
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clipped_device_none_periods AS (
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SELECT
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space_id,
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GREATEST(empty_from, DATE_TRUNC('day', empty_from)) AS clipped_from,
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LEAST(empty_until, DATE_TRUNC('day', empty_until) + INTERVAL '1 day') AS clipped_until
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FROM device_none_periods
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WHERE empty_until IS NOT NULL
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),
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-- Step 4: Break multi-day periods into daily intervals
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generated_daily_intervals AS (
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SELECT
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space_id,
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gs::date AS day,
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GREATEST(clipped_from, gs) AS interval_start,
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LEAST(clipped_until, gs + INTERVAL '1 day') AS interval_end
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FROM clipped_device_none_periods,
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LATERAL generate_series(DATE_TRUNC('day', clipped_from), DATE_TRUNC('day', clipped_until), INTERVAL '1 day') AS gs
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),
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-- Step 5: Merge overlapping or adjacent intervals per day
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merged_intervals AS (
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SELECT
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space_id,
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day,
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interval_start,
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interval_end
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FROM (
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SELECT
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space_id,
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day,
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interval_start,
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interval_end,
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LAG(interval_end) OVER (PARTITION BY space_id, day ORDER BY interval_start) AS prev_end
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FROM generated_daily_intervals
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) sub
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WHERE prev_end IS NULL OR interval_start > prev_end
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),
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-- Step 6: Sum up total missing seconds (device reported "none") per day
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missing_seconds_per_day AS (
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SELECT
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space_id,
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day AS missing_date,
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SUM(EXTRACT(EPOCH FROM (interval_end - interval_start))) AS total_missing_seconds
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FROM merged_intervals
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GROUP BY space_id, day
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),
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-- Step 7: Calculate total occupied time per day (86400 - missing)
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occupied_seconds_per_day AS (
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SELECT
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space_id,
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missing_date as event_date,
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86400 - total_missing_seconds AS total_occupied_seconds,
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(86400 - total_missing_seconds)/86400*100 as occupancy_prct
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FROM missing_seconds_per_day
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)
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-- Final Output
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, final_data as (
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SELECT occupied_seconds_per_day.space_id,
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occupied_seconds_per_day.event_date,
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occupied_seconds_per_day.occupancy_prct
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FROM occupied_seconds_per_day
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join params p on true
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and p.space_uuid = occupied_seconds_per_day.space_id
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and p.event_date = occupied_seconds_per_day.event_date
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ORDER BY 1,2
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)
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INSERT INTO public."space-daily-occupancy-duration" (
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space_uuid,
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event_date,
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occupancy_percentage
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)
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select space_id,
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event_date,
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occupancy_prct
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FROM final_data
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ON CONFLICT (space_uuid, event_date) DO UPDATE
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SET
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occupancy_percentage = EXCLUDED.occupancy_percentage;
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