CREATE TABLE table_50469 ("Institution" CLOB, "Location" CLOB, "Founded" CLOB, "Joined Conference" FLOAT, "Enrollment" FLOAT, "Nickname" CLOB)

What is the lowest enrolled school that was founded in 1992 and joined a conference before 1998?
SELECT MIN("Enrollment") FROM table_50469 WHERE "Founded" = '1992' AND "Joined Conference" < '1998'
SELECT MIN("Enrollment") FROM "table_50469" WHERE "Founded" = '1992' AND "Joined Conference" < '1998'