CREATE TABLE table_77443 ("Tie no" FLOAT, "Home team" CLOB, "Score" CLOB, "Away team" CLOB, "Date" CLOB)

What is the average Tie no when the date is Birmingham City?
SELECT AVG("Tie no") FROM table_77443 WHERE "Date" = 'birmingham city'
SELECT AVG("Tie no") FROM "table_77443" WHERE "Date" = 'birmingham city'