CREATE TABLE table_204_52 (id NUMBER, "#" NUMBER, "date" CLOB, "venue" CLOB, "opponent" CLOB, "score" CLOB, "result" CLOB, "competition" CLOB)

what is their most frequent competition ?
SELECT "competition" FROM table_204_52 GROUP BY "competition" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "competition" FROM "table_204_52" GROUP BY "competition" ORDER BY COUNT(*) DESC FETCH FIRST 1 ROWS ONLY