CREATE TABLE table_1555308_1 (bleeding_time VARCHAR2, platelet_count VARCHAR2, prothrombin_time VARCHAR2)

How is the bleeding time wherein platelet count is decreased and prothrombin time is unaffected?
SELECT bleeding_time FROM table_1555308_1 WHERE platelet_count = "Decreased" AND prothrombin_time = "Unaffected"
SELECT "bleeding_time" FROM "table_1555308_1" WHERE "Decreased" = "platelet_count" AND "Unaffected" = "prothrombin_time"