– 查询课程名称为"数学",且分数低于60的学生姓名和分数
SELECT
st.s_id,
st.s_name,
sc.s_score
FROM student st
INNER JOIN score sc ON sc.s_id=st.s_id AND sc.s_score<60
INNER JOIN course c ON c.c_id=sc.c_id AND c.c_name ="数学"
– 查询课程名称为"数学",且分数低于60的学生姓名和分数
SELECT
st.s_id,
st.s_name,
sc.s_score
FROM student st
INNER JOIN score sc ON sc.s_id=st.s_id AND sc.s_score<60
INNER JOIN course c ON c.c_id=sc.c_id AND c.c_name ="数学"