INSERT INTO student VALUES(1,'藺斐','男','2002-04-09',0.25);
INSERT INTO student VALUES(2,'熊大','男','1999-08-08',100);
INSERT INTO student VALUES(3,'吉吉國王','男','2009-09-09',900);
INSERT INTO student VALUES(4,'光頭強','男','2009-01-01',200);
SELECT * FROM student; -- 查詢表中所有資料

SELECT sname,ssex FROM student; -- 查詢表中指定欄位資料

SELECT sid,sname AS n,ssex AS s,birth FROM student; -- 查詢時新增常量列

SELECT DISTINCT(ssex) FROM student; -- 查詢學生表中有哪些性別 對性別進行去重

SELECT DISTINCT ssex FROM student; -- 去重 不可以和普通欄位一起查

SELECT * FROM student WHERE ssex='男'; -- 查詢表中所有男生資訊

SELECT sname,ssex,money FROM student WHERE money>500;-- 查詢零花錢大於500的同學

SELECT sid,sname,money FROM student WHERE ssex='男'AND money>=100; -- 查詢零花錢大於100元的男生編號、姓名、零花錢

SELECT * FROM student WHERE birth>'2000' AND ssex='男'; -- 查詢生日在2000年以後的男生資訊

SELECT YEAR(birth) FROM student; -- 擷取年份

SELECT MONTH(birth) FROM student; -- 擷取月

SELECT DAY(birth) FROM student; -- 擷取日

SELECT * FROM student WHERE YEAR(birth)>2000 AND ssex='男'; -- 查詢生日在2000年以後的男生

SELECT * FROM student WHERE money<200 OR YEAR(birth)<2000; -- 查詢零花錢小於200或者2000年以前出生的學生資訊

SELECT * FROM student WHERE ssex<>'男'; -- 查詢學生表中不是男生的學生資訊