CREATE TABLE table_8422 ("Tie no" CLOB, "Home team" CLOB, "Score" CLOB, "Away team" CLOB, "Date" CLOB)

what is the tie number that has Portsmouth Home team
SELECT "Tie no" FROM table_8422 WHERE "Home team" = 'portsmouth'
SELECT "Tie no" FROM "table_8422" WHERE "Home team" = 'portsmouth'