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B', '200625', '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),
    PRICE DECIMAL(10,2),
    PROVINCE VARCHAR(50)
);
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', 3.58, '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');
*/
/*
CREATE TABLE TABLE3
(
    BANKCD CHAR(6),
    SHORTBNM VARCHAR(20),
    STKCD CHAR(6),
    TYPREP CHAR(1),
    CASH DECIMAL(20)
);
INSERT INTO TABLE3 (BANKCD, SHORTBNM, STKCD, TYPREP, CASH)VALUES ('000027', '南京银行', '601009', 'B', 105220607000);
INSERT INTO TABLE3 (BANKCD, SHORTBNM, STKCD, TYPREP, CASH)VALUES ('000027', '南京银行', '601009', 'C', 93065245000);
INSERT INTO TABLE3 (BANKCD, SHORTBNM, STKCD, TYPREP, CASH)VALUES ('000027', '南京银行', '601009', 'A', 106225841000);
INSERT INTO TABLE3 (BANKCD, SHORTBNM, STKCD, TYPREP, CASH)VALUES ('000084', '贵阳银行', '601007', 'D', 41210720000);
INSERT INTO TABLE3 (BANKCD, SHORTBNM, STKCD, TYPREP, CASH)VALUES ('000021', '北京银行', '601169', 'B', 184491000000);
INSERT INTO TABLE3 (BANKCD, SHORTBNM, STKCD, TYPREP, CASH)VALUES ('000077', '杭州银行', '600927', 'D', 68901675000);

UPDATE TABLE3 SET STKCD=600926 WHERE STKCD='600927';
DELETE FROM TABLE3 WHERE TYPREP='D';
INSERT INTO TABLE3(BANKCD,SHORTBNM, STKCD, TYPREP,CASH) VALUES ('000014', '招商银行', '600036', 'B', 599416000000);
*/

/*
CREATE TABLE TABLE4
(
    STOCK VARCHAR(50),
    SYMBOL VARCHAR(10),
    SHARETYPE CHAR(1)),
    PRICE DECIMAL(10, 2),
    PROVINCE VARCHAR(50)
);
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('平安银行', '000001', 'A', 69.97, '广东省');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('长安B', '200625', 'B', 7.11, '重庆市');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('比亚迪', '002594', 'A', 172.78, '广东省');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('东信B', '900941', 'B', 0.47, '浙江省');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('复星医药', '600196', 'A', 65.00, '上海市');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('ST星源', '000005', 'A', 1.82, '广东省');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('北京城乡', '600861', 'A', 14.38, '北京市');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('三环集团', '300408', 'A', 37.41, '广东省');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('万科A', '000002', 'A', 26.77, '广东省');
INSERT INTO TABLE3 (STOCK, SYMBOL, SHARETYPE, PRICE, PROVINCE)VALUES ('南玻B', '200012', 'B', 3.58, '广东省');

SELECT*FROM stock_info;
SETECT SYMBOL FROM stock_info;
SETECT DISTINCT SHARETYPE FROM stock_info;
SELECT STOCK,SYMBOL FROM stock_info;
SELECT * FROM stock_info;
SELECT * FROM stock_info WHERE SHARETYPE='A';
SELECT STOCK FROM stock_info WHERE SHARETYPE='A';
SELECT * FROM stock_info WHERE SYMBOL LIKE '0%';
SELECT * FROM stock_info WHERE SYMBOL LIKE '%1';
SELECT * FROM stock_info WHERE SYMBOL LIKE '%9%';
SELECT * FROM stock_info WHERE SYMBOL NOT LIKE '%9%';
SELECT * FROM stock_info WHERE SHARETYPE='A' AND PROVINCE='广东省';
SELECT * FROM stock_info WHERE PRICE=7.11 OR SHARETYPE='B';
SELECT * FROM stock_info WHERE SHARETYPE='B' AND (PROVINCE='广东省' OR PROVINCE='浙江省');
SELECT * FROM stock_info WHERE SHARETYPE='A' AND PROVINCE='广东省';
SELECT * FROM stock_info WHERE PRICE NOT BETWEEN 0 AND 10;
SELECT * FROM stock_info ORDER BY SHARETYPE;
SELECT * FROM stock_info ORDER BY SHARETYPE, PRICE;
SELECT * FROM stock_info ORDER BY PRICE DESC;
SELECT * FROM stock_info ORDER BY SHARETYPE ASC, PRICE DESC;
SELECT * FROM TABLE4;
SELECT STOCK, SYMBOL FROM TABLE4;
SELECT STOCK, SYMBOL, PRICE FROM TABLE4 WHERE PRICE BETWEEN 30 AND 100 ORDER BY PRICE DESC;

/*
CREATE TABLE TABLE6 (
    Stkcd VARCHAR(10),
    Trddt DATE,
    Opnprc DECIMAL(10, 2),
    Clsprc DECIMAL(10, 2),
    Dnshrtrd INT
);
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603897', '2019-01-02', 22.01, 22.81, 2176373),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603898', '2019-01-02', 15.33, 15.33, 852951),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603899', '2019-01-02', 30.15, 28.86, 3435768),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603900', '2019-01-02', 11.88, 11.82, 629531),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603901', '2019-01-02', 6.59, 6.62, 968100),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603902', '2019-01-02', 20.84, 20.15, 1390500),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603903', '2019-01-02', 8.65, 8.63, 1106160),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603908', '2019-01-02', 24.38, 24.51, 963600),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603909', '2019-01-02', 25.52, 25.7, 1089096),
INSERT INTO TABLE6 (Stkcd, Trddt, Opnprc, Clsprc, Dnshrtrd) VALUES ('603912', '2019-01-02', 13.32, 13.7, 4097856);

SELECT Dnshrtrd FROM TABLE6 WHERE Stkcd = '603903';
SELECT Stkcd, Opnprc FROM TABLE6;
SELECT Stkcd, Trddt, Dnshrtrd 
FROM TABLE6 
WHERE Clsprc BETWEEN 10 AND 20 
ORDER BY Dnshrtrd DESC;