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Performance efficiency of SQLQuery + AVG

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  • fifek@wmail.club
    Junior Member
    • Sep 2018
    • 1

    #1

    Performance efficiency of SQLQuery + AVG

    Hi

    I have a trigger which monitors number of items in a table. If an average number of items in this table is higher than a threshold (within a given period of time) an alert is generated. Here is a trigger expression used by me:

    {SERVER:SQLQuery["DB_NAME","SELECT COUNT(*) FROM dbo.TableName"].avg(60)}> 5

    My question is: Does it mean that every X seconds Zabbix send a request to a database?

    Or maybe it is clever enough to use a mechanism like Track Data Changes from MSSQL.
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