CREATE TABLE table_12158 ("Rank" FLOAT, "Name" TEXT, "City" TEXT, "Metres" FLOAT, "Floors" FLOAT)

What is the average number of metres for the Dzelzavas Street 74?
SELECT AVG("Metres") FROM table_12158 WHERE "Name" = 'dzelzavas street 74'
SELECT AVG("Metres") FROM "table_12158" WHERE "Name" = 'dzelzavas street 74'