CREATE TABLE table_77510 ("D 49" TEXT, "D 48" TEXT, "D 47" TEXT, "D 46" TEXT, "D 45" TEXT, "D 44" TEXT, "D 43" TEXT, "D 42" TEXT, "D 41" TEXT, "D 40" TEXT)

I want the D 47 for D 41 being r 21
SELECT "D 47" FROM table_77510 WHERE "D 41" = 'r 21'
SELECT "D 47" FROM "table_77510" WHERE "D 41" = 'r 21'