编辑代码

CREATE DATABASE test;
use test;
/*
CREATE TABLE TABLE1
(
    STOCK varchar(20),
    SYMBOL char(6),
    SHARETYPE char(1),
    TRADEDATE date,
    PRICE decimal(10,2)
);
INSERT INTO TABLE1(STOCK, SYMBOL, SHARETYPE, TRADEDATE, PRICE) VALUES ('平安银行','000001', 'A', '2021-05-20', 69.97);
INSERT INTO TABLE1(STOCK, SYMBOL, SHARETYPE, TRADEDATE, PRICE) VALUES ('长安','000625', 'B', '2021-05-20', 7.11);
INSERT INTO TABLE1(STOCK, SYMBOL, SHARETYPE, TRADEDATE, PRICE) VALUES ('ST星源','000005', 'A', '2021-05-20', 1.82);
INSERT INTO TABLE1(STOCK,SHARETYPE)VALUES('比亚迪','A');
ALTER TABLE TABLE1 ADD(PROVINCE varchar(10));
UPDATE TABLE1 SET PRICE=70.2 WHERE STOCK='平安银行';
UPDATE TABLE1 SET PRICE=70.15, SYMBOL='000002' WHERE STOCK='平安银行';
DELETE FROM TABLE1 WHERE STOCK='平安银行';
DELETE FROM TABLE1;
*/
CREATE TABLE TABLE2
(
    STOCK varchar(20),
    SYMBOL char(6),
    SHARETYPE char(1),
    TRADEDATE date,
    PRICE decimal(10,2),
    PROVINCE varchar(10)
);
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('平安银行', '200012','B',3.58, '广东省') ;
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('长安B', '200625','B',7.11, '重庆市');
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('ST星源', '000005','A',1.82, '广东省') ;
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('北京城乡', '600861','A',14.38, '北京市');
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('三环集团', '300408','A',37.41, '广东省');
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('万科A', '000002','A',26.77, '广东省');
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('南玻B', '200012','B',3.88, '广东省');
UPDATE TABLE2 SET PRICE=16.25 WHERE STOCK='平安银行';
DELETE FROM TABLE2 WHERE STOCK='B';
DELETE FROM TABLE2 WHERE STOCK='平安银行';
INSERT INTO TABLE2(STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE) VALUES('平安银行', '000001', 'A', 16.25, '广东省');