48 lines
1.2 KiB
SQL
48 lines
1.2 KiB
SQL
WITH latest AS (
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SELECT ld.*
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FROM lane_data ld
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INNER JOIN (
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SELECT Name, MAX(t_stamp) AS max_ts
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FROM lane_data
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WHERE Name LIKE 'S02\\_%'
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GROUP BY Name
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) x ON ld.Name = x.Name AND ld.t_stamp = x.max_ts
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),
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classified AS (
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SELECT
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CASE
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WHEN Disabled = 1 THEN 'Disabled'
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WHEN Jam = 1 THEN 'Jammed'
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WHEN Full = 1 THEN '100% Full'
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WHEN Half_Full = 1 THEN '50% Full'
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ELSE 'Enabled'
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END AS category
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FROM latest
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),
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totals AS (
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SELECT COUNT(*) AS total_lanes FROM classified
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),
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agg AS (
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SELECT category, COUNT(*) AS category_count
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FROM classified
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GROUP BY category
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),
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all_categories AS (
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SELECT 'Enabled' AS category
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UNION ALL SELECT 'Disabled'
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UNION ALL SELECT 'Jammed'
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UNION ALL SELECT '50% Full'
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UNION ALL SELECT '100% Full'
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)
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SELECT
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ac.category,
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COALESCE(a.category_count, 0) AS Count,
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CONCAT(
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ROUND(COALESCE(a.category_count, 0) * 100.0 / (SELECT total_lanes FROM totals), 1),
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'%'
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) AS `Percentage (%)`
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FROM all_categories ac
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LEFT JOIN agg a ON ac.category = a.category
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ORDER BY FIELD(ac.category, 'Enabled', 'Disabled', 'Jammed', '50% Full', '100% Full');
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