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SELECT system.id AS `system.id`, system.ip AS `system.ip`, system.name AS `system.name`, system.description AS `system.description`, system.function AS `system.function`, system.purchase_date AS `system.purchase_date`, system.type AS `system.type`, locations.name AS `locations.name` FROM system LEFT JOIN locations ON (system.location_id = locations.id) WHERE @filter HAVING AND system.purchase_date = '20012000-01-01' OR system.function = '' OR system.description = ''
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