31 lines
1.1 KiB
SQL
31 lines
1.1 KiB
SQL
-- GetActiveAlarmsByLocationAndPriority: Count active alarms grouped by location and priority
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-- Uses: idx_alarm_events_active, idx_alarm_events_clear, idx_alarm_event_data_lookup, idx_alarm_events_priority
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-- Expected performance: <100ms on 37K rows, <200ms on 1M+ rows
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SELECT
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SUBSTRING_INDEX(SUBSTRING_INDEX(IFNULL(aed.strValue, ''), '/', 2), '/', -1) AS Location,
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CASE ae.priority
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WHEN 0 THEN 'Diagnostic'
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WHEN 1 THEN 'Low'
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WHEN 2 THEN 'Medium'
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WHEN 3 THEN 'High'
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WHEN 4 THEN 'Critical'
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ELSE 'Unknown'
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END AS Priority,
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COUNT(*) AS Count
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FROM alarm_events ae FORCE INDEX (idx_alarm_events_active)
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LEFT JOIN alarm_event_data aed FORCE INDEX (idx_alarm_event_data_lookup)
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ON aed.id = ae.id AND aed.propname = 'myTag'
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WHERE ae.eventtype = 0
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AND ae.displaypath NOT LIKE '%System Startup%'
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AND ae.source NOT LIKE '%System Startup%'
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-- FORCE INDEX in NOT EXISTS ensures fast clear event lookup
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AND NOT EXISTS (
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SELECT 1
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FROM alarm_events clr FORCE INDEX (idx_alarm_events_clear)
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WHERE clr.eventid = ae.eventid
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AND clr.eventtype = 1
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)
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GROUP BY Location, ae.priority
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ORDER BY Location, Priority;
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