CREATE TABLE table_name_12 (date VARCHAR2, opponenent VARCHAR2, match_type VARCHAR2)

When was the opponent Poland and the match type EC -qualifier?
SELECT date FROM table_name_12 WHERE opponenent = "poland" AND match_type = "ec -qualifier"
SELECT "date" FROM "table_name_12" WHERE "ec -qualifier" = "match_type" AND "opponenent" = "poland"