SQL面试题收录

1、用一条SQL语句
查询出每门课都大于80分的学生姓名

SELECT DISTINCT
  NAME
FROM
  t_score_tab
WHERE NAME NOT IN
  (SELECT DISTINCT
    NAME
  FROM
    t_score_tab
  WHERE score <= 80)

2、查询两门或两门以上成绩都超过80分（含80）的学生姓名

SELECT
  NAME
FROM
  t_score_tab
WHERE score >= 80
GROUP BY NAME
HAVING COUNT(1) >= 2