-- 숫자를 문자로 변환 SELECT CAST(123 AS STRING) AS STRING, 123 AS INT; -- 문자를 숫자(정수)로 변환 SELECT CAST('1004' AS INT64) AS INT,'1004'AS STRING; -- 문자를 날짜로 변환 SELECT PARSE_DATE('%Y%m%d', '20230718') AS date, '20230718' AS STRING;