CREATE TABLE table_204_850 (id DECIMAL, "name" TEXT, "railway" TEXT, "series" TEXT, "maker" TEXT, "dates" TEXT, "drive" TEXT, "wheel arrangement" TEXT, "weight" TEXT, "power" TEXT, "notes" TEXT)

what is the difference in weight between the re 465 and the ae 6/6 ?
SELECT ABS((SELECT "weight" FROM table_204_850 WHERE "name" = 're 465') - (SELECT "weight" FROM table_204_850 WHERE "name" = 'ae 6/6'))
SELECT ABS((SELECT "weight" FROM "table_204_850" WHERE "name" = 're 465') - (SELECT "weight" FROM "table_204_850" WHERE "name" = 'ae 6/6'))