CREATE TABLE table_79649 ("Class" CLOB, "Wheel arrangement" CLOB, "Fleet number ( s ) " CLOB, "Manufacturer" CLOB, "Serial numbers" CLOB, "Year made" CLOB, "Quantity made" CLOB, "Quantity preserved" CLOB)

what is the quantity made when the class is d-2?
SELECT "Quantity made" FROM table_79649 WHERE "Class" = 'd-2'
SELECT "Quantity made" FROM "table_79649" WHERE "Class" = 'd-2'