CREATE TABLE table_203_590 (id NUMBER, "date" CLOB, "venue" CLOB, "opponents" CLOB, "score" CLOB, "competition" CLOB, "scotland scorer ( s ) " CLOB)

in which two games did scotland not score a goal ?
SELECT "date" FROM table_203_590 WHERE "score" = 0
SELECT "date" FROM "table_203_590" WHERE "score" = 0