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    Incident report 
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    Resolution: Fixed
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    Major 
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    None
While processing triggers ? history syncer generates a lot of SQL queries. At least one SQL query for one trigger function. It should be refined.
- is duplicated by
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                    ZBXNEXT-874 cache item values that are needed in trigger expressions -         
- Closed
 
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                    ZBX-3778 Allow database to use indexes reduces database load a lot -         
- Closed
 
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