CREATE TABLE table_12439 ("Tie no" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Date" TEXT)

What is Tie no, when Home Team is 'Gillingham'?
SELECT "Tie no" FROM table_12439 WHERE "Home team" = 'gillingham'
SELECT "Tie no" FROM "table_12439" WHERE "Home team" = 'gillingham'