Código SQL [-] select INGRESO - EGRESO, sum( if(tipo = 'I', CANTIDAD,0)) as INGRESO, sum( if(tipo= 'E', CANTIDAD, 0) ) as EGRESO from INVENTARIO WHERE EMPRESA = 'EMP1'
select INGRESO - EGRESO, sum( if(tipo = 'I', CANTIDAD,0)) as INGRESO, sum( if(tipo= 'E', CANTIDAD, 0) ) as EGRESO from INVENTARIO WHERE EMPRESA = 'EMP1'