CREATE TABLE table_50130 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" FLOAT)

Which Opponent that has a Week smaller than 7 on september 12, 1988?
SELECT "Opponent" FROM table_50130 WHERE "Week" < '7' AND "Date" = 'september 12, 1988'
SELECT "Opponent" FROM "table_50130" WHERE "Date" = 'september 12, 1988' AND "Week" < '7'