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fix(coderd/database): improve perf of `GetTemplateInsightsByInterval` (#12773)
Refs #12122
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@ -1897,7 +1897,7 @@ WITH
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CROSS JOIN
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generate_series(
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date_trunc('minute', was.session_started_at),
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-- Subtract 1 microsecond to avoid creating an extra series.
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-- Subtract 1 μs to avoid creating an extra series.
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date_trunc('minute', was.session_ended_at - '1 microsecond'::interval),
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'1 minute'::interval
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) AS s(minute_bucket)
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@ -2078,14 +2078,17 @@ WITH
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ts AS (
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SELECT
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d::timestamptz AS from_,
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CASE
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WHEN (d::timestamptz + ($2::int || ' day')::interval) <= $3::timestamptz
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THEN (d::timestamptz + ($2::int || ' day')::interval)
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ELSE $3::timestamptz
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END AS to_
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LEAST(
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(d::timestamptz + ($2::int || ' day')::interval)::timestamptz,
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$3::timestamptz
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)::timestamptz AS to_
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FROM
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-- Subtract 1 microsecond from end_time to avoid including the next interval in the results.
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generate_series($4::timestamptz, ($3::timestamptz) - '1 microsecond'::interval, ($2::int || ' day')::interval) AS d
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generate_series(
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$4::timestamptz,
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-- Subtract 1 μs to avoid creating an extra series.
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($3::timestamptz) - '1 microsecond'::interval,
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($2::int || ' day')::interval
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) AS d
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)
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SELECT
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@ -2099,6 +2102,7 @@ LEFT JOIN
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template_usage_stats AS tus
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ON
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tus.start_time >= ts.from_
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AND tus.start_time < ts.to_ -- End time exclusion criteria optimization for index.
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AND tus.end_time <= ts.to_
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AND CASE WHEN COALESCE(array_length($1::uuid[], 1), 0) > 0 THEN tus.template_id = ANY($1::uuid[]) ELSE TRUE END
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GROUP BY
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@ -2632,7 +2636,7 @@ WITH
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CROSS JOIN
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generate_series(
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date_trunc('minute', was.session_started_at),
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-- Subtract 1 microsecond to avoid creating an extra series.
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-- Subtract 1 μs to avoid creating an extra series.
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date_trunc('minute', was.session_ended_at - '1 microsecond'::interval),
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'1 minute'::interval
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) AS s(minute_bucket)
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@ -355,7 +355,7 @@ WITH
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CROSS JOIN
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generate_series(
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date_trunc('minute', was.session_started_at),
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-- Subtract 1 microsecond to avoid creating an extra series.
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-- Subtract 1 μs to avoid creating an extra series.
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date_trunc('minute', was.session_ended_at - '1 microsecond'::interval),
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'1 minute'::interval
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) AS s(minute_bucket)
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@ -389,14 +389,17 @@ WITH
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ts AS (
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SELECT
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d::timestamptz AS from_,
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CASE
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WHEN (d::timestamptz + (@interval_days::int || ' day')::interval) <= @end_time::timestamptz
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THEN (d::timestamptz + (@interval_days::int || ' day')::interval)
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ELSE @end_time::timestamptz
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END AS to_
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LEAST(
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(d::timestamptz + (@interval_days::int || ' day')::interval)::timestamptz,
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@end_time::timestamptz
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)::timestamptz AS to_
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FROM
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-- Subtract 1 microsecond from end_time to avoid including the next interval in the results.
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generate_series(@start_time::timestamptz, (@end_time::timestamptz) - '1 microsecond'::interval, (@interval_days::int || ' day')::interval) AS d
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generate_series(
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@start_time::timestamptz,
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-- Subtract 1 μs to avoid creating an extra series.
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(@end_time::timestamptz) - '1 microsecond'::interval,
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(@interval_days::int || ' day')::interval
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) AS d
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)
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SELECT
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@ -410,6 +413,7 @@ LEFT JOIN
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template_usage_stats AS tus
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ON
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tus.start_time >= ts.from_
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AND tus.start_time < ts.to_ -- End time exclusion criteria optimization for index.
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AND tus.end_time <= ts.to_
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AND CASE WHEN COALESCE(array_length(@template_ids::uuid[], 1), 0) > 0 THEN tus.template_id = ANY(@template_ids::uuid[]) ELSE TRUE END
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GROUP BY
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@ -473,7 +477,7 @@ WITH
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CROSS JOIN
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generate_series(
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date_trunc('minute', was.session_started_at),
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-- Subtract 1 microsecond to avoid creating an extra series.
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-- Subtract 1 μs to avoid creating an extra series.
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date_trunc('minute', was.session_ended_at - '1 microsecond'::interval),
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'1 minute'::interval
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) AS s(minute_bucket)
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