CREATE TABLE table_5612 ("School" CLOB, "Location" CLOB, "Mascot" CLOB, "County" CLOB, "Year Joined" FLOAT, "Previous Conference" CLOB, "Year Left" FLOAT, "Conference Joined" CLOB)

Which Year Left is the lowest one that has a School of calumet, and a Year Joined larger than 1993?
SELECT MIN("Year Left") FROM table_5612 WHERE "School" = 'calumet' AND "Year Joined" > '1993'
SELECT MIN("Year Left") FROM "table_5612" WHERE "School" = 'calumet' AND "Year Joined" > '1993'