CREATE TABLE table_63323 ("Tie no" CLOB, "Home team" CLOB, "Score" CLOB, "Away team" CLOB, "Date" CLOB)

What's the tie number when the away team was Mansfield Town?
SELECT "Tie no" FROM table_63323 WHERE "Away team" = 'mansfield town'
SELECT "Tie no" FROM "table_63323" WHERE "Away team" = 'mansfield town'