sql行轉列

創建數據庫

 CREATE DATABASE `ceshi`CHARACTER SET utf8 COLLATE utf8_general_ci;

建表

CREATE TABLE exampleTable (course VARCHAR(20),teacher VARCHAR(20),student VARCHAR(20),score  INT) ;

插入數據

INSERT INTO exampleTable (course,teacher,student,score) VALUES ('數學',' 王華','麗麗',60);


INSERT INTO exampleTable (course,teacher,student,score) VALUES ('數學',' 王華','李四',30);


INSERT INTO exampleTable (course,teacher,student,score) VALUES ('語文',' 張三','麗麗',70);


INSERT INTO exampleTable (course,teacher,student,score) VALUES ('語文',' 張三','李四',80);

SELECT student,


SUM(CASE course WHEN '數學' THEN score ELSE 0 END) AS '數學' ,


SUM(CASE course WHEN '語文' THEN score ELSE 0 END) AS '語文'


FROM exampleTable GROUP BY student;

結果