CREATE TABLE table_203_394 (id NUMBER, "title" CLOB, "author" CLOB, "date" NUMBER, "length\ ( first edition ) " CLOB)

which author had all of his titles ' first edition lengths above 300 pp ?
SELECT "author" FROM table_203_394 GROUP BY "author" HAVING MIN("length\n(first edition)") > 300
SELECT "author" FROM "table_203_394" GROUP BY "author" HAVING MIN("length\n(first edition)") > 300