CREATE TABLE table_2015 ("Pos" FLOAT, "No" FLOAT, "Driver" TEXT, "Constructor" TEXT, "Q1 order" FLOAT, "Q1 time" TEXT, "Q1 pos" FLOAT, "Q1+Q2 time" TEXT)

What is the q1+q2 time in which q1 is 1:18.574?
SELECT "Q1+Q2 time" FROM table_2015 WHERE "Q1 time" = '1:18.574'
SELECT "Q1+Q2 time" FROM "table_2015" WHERE "Q1 time" = '1:18.574'