Código SQL [-]Update LOTES Set EXIST = EXIST + (Select Coalesce(Sum(CANTIDAD), 0) from LINEAS where LOTES.CODIGO = LINEAS.CODIGO and LOTES.ARTICULO = LINEAS.ARTICULO)
Update LOTES Set EXIST = EXIST + (Select Coalesce(Sum(CANTIDAD), 0) from LINEAS where LOTES.CODIGO = LINEAS.CODIGO and LOTES.ARTICULO = LINEAS.ARTICULO)