CREATE TABLE table_204_140 (id NUMBER, "round" NUMBER, "#" NUMBER, "player" CLOB, "position" CLOB, "nationality" CLOB, "college/junior/club team  ( league ) " CLOB)

there are the same number of centers as what other position on the team ?
SELECT "position" FROM table_204_140 WHERE "position" <> 'center' GROUP BY "position" HAVING COUNT(*) = (SELECT COUNT(*) FROM table_204_140 WHERE "position" = 'center')
WITH "_u_0" AS (SELECT COUNT(*), 'center' AS "_u_1" FROM "table_204_140" GROUP BY 'center') SELECT "position" FROM "table_204_140" LEFT JOIN "_u_0" "_u_0" ON "_u_0"."_u_1" = "position" WHERE "position" <> 'center' GROUP BY "position" HAVING COALESCE("_u_0"."", *) = COUNT(*)