1.新建一個名爲TEST表 html
2.向TEST表中添加數據 oracle
INSERT INTO TEST(STUDENT,COURSE,SCORE)
select '張三','語文',78 from dual union
select '張三','數學',87 from dual union
select '張三','英語',82 from dual union
select '張三','物理',90 from dual union
select '李四','語文',65 from dual union
select '李四','數學',77 from dual union
select '李四','英語',65 from dual union
select '李四','物理',85 from dual ui
表數據以下: spa
3.列轉行 code
方法··1: htm
select
Student,
sum(decode(Course, '數學', Score)) 數學,
sum(decode(Course, '物理', Score)) 物理,
sum(decode(Course, '英語', Score)) 英語,
sum(decode(Course, '語文', Score)) 語文
from
TEST
group by Student blog
方法··2: get
select
Student,
sum(case Course when '數學' then Score else null end) 數學,
sum(case Course when '物理' then Score else null end) 物理,
sum(case Course when '英語' then Score else null end) 英語,
sum(case Course when '語文' then Score else null end) 語文
from
TEST
group by Student 數學
效果以下: io
注:sum是求和的意思;好比說裏面記錄裏面有兩條張三,列轉行顯示的結果就會是兩個張三的結果之和。