32 lines
834 B
SQL
32 lines
834 B
SQL
SELECT
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Name,
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COALESCE(Jam_count, 0) AS Jam_count
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FROM (
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SELECT
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FROM_UNIXTIME(
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FLOOR(UNIX_TIMESTAMP(t_stamp) /
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CEIL(TIMESTAMPDIFF(SECOND, :starttime, :endtime) / 24.0)
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) *
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CEIL(TIMESTAMPDIFF(SECOND, :starttime, :endtime) / 24.0)
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) AS roundtime,
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Name,
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COUNT(*) AS Jam_count
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FROM (
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-- Jams from jam_area table
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SELECT Name, t_stamp
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FROM jam_area
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WHERE t_stamp BETWEEN :starttime AND :endtime
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UNION ALL
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-- Jams from lane_data table (only where Jam = 1)
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SELECT Name, t_stamp
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FROM lane_data
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WHERE t_stamp BETWEEN :starttime AND :endtime
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AND Jam = 1
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) AS combined_jams
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GROUP BY roundtime, Name
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ORDER BY roundtime ASC
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) basa;
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