CREATE TABLE table_name_92 (length NUMBER, taper VARCHAR2, large_end VARCHAR2)

Which Length has a Taper of #15, and a Large end larger than 1.875?
SELECT MAX(length) FROM table_name_92 WHERE taper = "#15" AND large_end > 1.875
SELECT MAX("length") FROM "table_name_92" WHERE "#15" = "taper" AND "large_end" > 1.875