CREATE TABLE table_204_54 (id NUMBER, "pondicherry assembly" CLOB, "duration" CLOB, "name of m.l.a." CLOB, "party affiliation" CLOB, "election year" NUMBER)

is the current pondicherry assembly the tenth or the twelfth ?
SELECT "pondicherry assembly" FROM table_204_54 ORDER BY "duration" DESC LIMIT 1
SELECT "pondicherry assembly" FROM "table_204_54" ORDER BY "duration" DESC FETCH FIRST 1 ROWS ONLY