
GROUP BY, 쿼리실행 순서

GROUP BY, REGEXP
SELECT
SELECT, INNER JOIN
SELECT, IFNULL, MYSQL 조건문
SELECT, 다중 정렬
SELECT, 다중 정렬
SELECT, HAVING, GROUP BY
월간 코드 챌린지 시즌1
SELECT, GROUP BY
SELECT, UNION

GROUP BY, IN, HAVING
String, LEFT
GROUP BY, SUM
GROUP BY, CASE WHEN ~ THEN 참 ELSE 거짓
GROUP BY, LIKE
SQL, COUNT
SQL, HAVING
GROUP BY, 3중 JOIN
GROUP BY
GROUP BY
GROUP BY, DISTINCT
GROUP BY, SET변수
GROUP BY, TRUNCATE
JOIN, 서브쿼리(IN, =)
JOIN
DATE, DATEDIFF
JOIN