INSERT INTO "#__extensions" ("package_id", "name", "type", "element", "folder", "client_id", "enabled", "access", "protected", "locked", "manifest_cache", "params", "custom_data", "ordering", "state")
SELECT 0, 'plg_behaviour_compat', 'plugin', 'compat', 'behaviour', 0, 1, 1, 0, 1, '', '{"classes_aliases":"1","es5_assets":"1"}', '', -1, 0
WHERE NOT EXISTS (SELECT * FROM "#__extensions" e WHERE e."type" = 'plugin' AND e."element" = 'compat' AND e."folder" = 'behaviour' AND e."client_id" = 0);