CREATE TABLE table_23111 ("SP" CLOB, "Number" FLOAT, "Horse" CLOB, "Age" FLOAT, "Handicap  ( st-lb ) " CLOB, "Jockey" CLOB, "Trainer" CLOB, "Owner" CLOB, "Colours" CLOB, "Finishing position" CLOB)

How many numbers have sp of 20/1 and a finishing position of fence 19?
SELECT COUNT("Number") FROM table_23111 WHERE "SP" = '20/1' AND "Finishing position" = 'Fence 19'
SELECT COUNT("Number") FROM "table_23111" WHERE "Finishing position" = 'Fence 19' AND "SP" = '20/1'