CREATE TABLE table_12603 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Decision" CLOB, "Attendance" FLOAT, "Record" CLOB)

What was the highest attendance on December 23?
SELECT MAX("Attendance") FROM table_12603 WHERE "Date" = 'december 23'
SELECT MAX("Attendance") FROM "table_12603" WHERE "Date" = 'december 23'