CREATE TABLE table_45056 ("Outcome" CLOB, "Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Partner" CLOB, "Opponents in the final" CLOB, "Score" CLOB)

What surface did hayley ericksen play on?
SELECT "Surface" FROM table_45056 WHERE "Partner" = 'hayley ericksen'
SELECT "Surface" FROM "table_45056" WHERE "Partner" = 'hayley ericksen'