SQL 하루 문제

2020-10-12

SELECT

1
2
3
4
5
6
7

SUM, MAX, MIN

1
1
1
1

GROUP BY

1
1
1
1

2020-10-13

IS NULL

1
1
1

JOIN

1
1
1
1

STRING, DATE

1
1
1
1
1

주요 개념

LIMIT
LIKE
REGEXP