CREATE TABLE table_51804 ("Player" TEXT, "Position" TEXT, "Date of Birth  ( Age ) " TEXT, "Caps" FLOAT, "Club/province" TEXT)

How many caps for mike macdonald?
SELECT SUM("Caps") FROM table_51804 WHERE "Player" = 'mike macdonald'
SELECT SUM("Caps") FROM "table_51804" WHERE "Player" = 'mike macdonald'