SELECCIONE iStop-iStart FROM(SELECT SUM(log_time) AS iStop FROM tbl WHERE status IN (2,3)) a JOIN(SELECT SUM(log_time) AS iStart FROM tbl WHERE status=1) b;
La consulta anterior solo funciona si pausar o detener es el último registro
SELECCIONE iStop-iStart FROM(SELECT SUM(log_time) AS iStop FROM tbl WHERE status IN (2,3)) a JOIN(SELECT SUM(log_time) AS iStart FROM tbl WHERE status=1) b;
La consulta anterior solo funciona si pausar o detener es el último registro