Jimmy Chen

A Programmer

MySQL使用HR数据库进行练习之基本查询练习

使用HR数据库进行练习之基本查询练习

  这部分内容是从 https://www.w3resource.com/mysql-exercises/basic-simple-exercises/ 中找到练习,这里分享给大家,同时下面是自己做练习时写的一些笔记

  要进行练习首先需要创建HR数据库,大家可以通过下面的语句进行来构建一个完整的HR数据库

-- phpMyAdmin SQL Dump
-- version 4.0.10.7
-- http://www.phpmyadmin.net
--
-- Host: localhost
-- Generation Time: Mar 20, 2015 at 01:43 AM
-- Server version: 5.5.34-cll-lve
-- PHP Version: 5.4.23

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET time_zone = "+00:00";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

--
-- Database: `wrpracti_bookinfo`
--

-- --------------------------------------------------------

--
-- Table structure for table `countries`
--

CREATE TABLE IF NOT EXISTS `countries` (
  `COUNTRY_ID` varchar(2) NOT NULL,
  `COUNTRY_NAME` varchar(40) DEFAULT NULL,
  `REGION_ID` decimal(10,0) DEFAULT NULL,
  PRIMARY KEY (`COUNTRY_ID`),
  KEY `COUNTR_REG_FK` (`REGION_ID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `countries`
--

INSERT INTO `countries` (`COUNTRY_ID`, `COUNTRY_NAME`, `REGION_ID`) VALUES
('AR', 'Argentina', '2'),
('AU', 'Australia', '3'),
('BE', 'Belgium', '1'),
('BR', 'Brazil', '2'),
('CA', 'Canada', '2'),
('CH', 'Switzerland', '1'),
('CN', 'China', '3'),
('DE', 'Germany', '1'),
('DK', 'Denmark', '1'),
('EG', 'Egypt', '4'),
('FR', 'France', '1'),
('HK', 'HongKong', '3'),
('IL', 'Israel', '4'),
('IN', 'India', '3'),
('IT', 'Italy', '1'),
('JP', 'Japan', '3'),
('KW', 'Kuwait', '4'),
('MX', 'Mexico', '2'),
('NG', 'Nigeria', '4'),
('NL', 'Netherlands', '1'),
('SG', 'Singapore', '3'),
('UK', 'United Kingdom', '1'),
('US', 'United States of America', '2'),
('ZM', 'Zambia', '4'),
('ZW', 'Zimbabwe', '4');

-- --------------------------------------------------------

--
-- Table structure for table `departments`
--

CREATE TABLE IF NOT EXISTS `departments` (
  `DEPARTMENT_ID` decimal(4,0) NOT NULL DEFAULT '0',
  `DEPARTMENT_NAME` varchar(30) NOT NULL,
  `MANAGER_ID` decimal(6,0) DEFAULT NULL,
  `LOCATION_ID` decimal(4,0) DEFAULT NULL,
  PRIMARY KEY (`DEPARTMENT_ID`),
  KEY `DEPT_MGR_FK` (`MANAGER_ID`),
  KEY `DEPT_LOCATION_IX` (`LOCATION_ID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `departments`
--

INSERT INTO `departments` (`DEPARTMENT_ID`, `DEPARTMENT_NAME`, `MANAGER_ID`, `LOCATION_ID`) VALUES
('10', 'Administration', '200', '1700'),
('20', 'Marketing', '201', '1800'),
('30', 'Purchasing', '114', '1700'),
('40', 'Human Resources', '203', '2400'),
('50', 'Shipping', '121', '1500'),
('60', 'IT', '103', '1400'),
('70', 'Public Relations', '204', '2700'),
('80', 'Sales', '145', '2500'),
('90', 'Executive', '100', '1700'),
('100', 'Finance', '108', '1700'),
('110', 'Accounting', '205', '1700'),
('120', 'Treasury', '0', '1700'),
('130', 'Corporate Tax', '0', '1700'),
('140', 'Control And Credit', '0', '1700'),
('150', 'Shareholder Services', '0', '1700'),
('160', 'Benefits', '0', '1700'),
('170', 'Manufacturing', '0', '1700'),
('180', 'Construction', '0', '1700'),
('190', 'Contracting', '0', '1700'),
('200', 'Operations', '0', '1700'),
('210', 'IT Support', '0', '1700'),
('220', 'NOC', '0', '1700'),
('230', 'IT Helpdesk', '0', '1700'),
('240', 'Government Sales', '0', '1700'),
('250', 'Retail Sales', '0', '1700'),
('260', 'Recruiting', '0', '1700'),
('270', 'Payroll', '0', '1700');

-- --------------------------------------------------------

--
-- Table structure for table `employees`
--

CREATE TABLE IF NOT EXISTS `employees` (
  `EMPLOYEE_ID` decimal(6,0) NOT NULL DEFAULT '0',
  `FIRST_NAME` varchar(20) DEFAULT NULL,
  `LAST_NAME` varchar(25) NOT NULL,
  `EMAIL` varchar(25) NOT NULL,
  `PHONE_NUMBER` varchar(20) DEFAULT NULL,
  `HIRE_DATE` date NOT NULL,
  `JOB_ID` varchar(10) NOT NULL,
  `SALARY` decimal(8,2) DEFAULT NULL,
  `COMMISSION_PCT` decimal(2,2) DEFAULT NULL,
  `MANAGER_ID` decimal(6,0) DEFAULT NULL,
  `DEPARTMENT_ID` decimal(4,0) DEFAULT NULL,
  PRIMARY KEY (`EMPLOYEE_ID`),
  UNIQUE KEY `EMP_EMAIL_UK` (`EMAIL`),
  KEY `EMP_DEPARTMENT_IX` (`DEPARTMENT_ID`),
  KEY `EMP_JOB_IX` (`JOB_ID`),
  KEY `EMP_MANAGER_IX` (`MANAGER_ID`),
  KEY `EMP_NAME_IX` (`LAST_NAME`,`FIRST_NAME`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `employees`
--

INSERT INTO `employees` (`EMPLOYEE_ID`, `FIRST_NAME`, `LAST_NAME`, `EMAIL`, `PHONE_NUMBER`, `HIRE_DATE`, `JOB_ID`, `SALARY`, `COMMISSION_PCT`, `MANAGER_ID`, `DEPARTMENT_ID`) VALUES
('100', 'Steven', 'King', 'SKING', '515.123.4567', '1987-06-17', 'AD_PRES', '24000.00', '0.00', '0', '90'),
('101', 'Neena', 'Kochhar', 'NKOCHHAR', '515.123.4568', '1987-06-18', 'AD_VP', '17000.00', '0.00', '100', '90'),
('102', 'Lex', 'De Haan', 'LDEHAAN', '515.123.4569', '1987-06-19', 'AD_VP', '17000.00', '0.00', '100', '90'),
('103', 'Alexander', 'Hunold', 'AHUNOLD', '590.423.4567', '1987-06-20', 'IT_PROG', '9000.00', '0.00', '102', '60'),
('104', 'Bruce', 'Ernst', 'BERNST', '590.423.4568', '1987-06-21', 'IT_PROG', '6000.00', '0.00', '103', '60'),
('105', 'David', 'Austin', 'DAUSTIN', '590.423.4569', '1987-06-22', 'IT_PROG', '4800.00', '0.00', '103', '60'),
('106', 'Valli', 'Pataballa', 'VPATABAL', '590.423.4560', '1987-06-23', 'IT_PROG', '4800.00', '0.00', '103', '60'),
('107', 'Diana', 'Lorentz', 'DLORENTZ', '590.423.5567', '1987-06-24', 'IT_PROG', '4200.00', '0.00', '103', '60'),
('108', 'Nancy', 'Greenberg', 'NGREENBE', '515.124.4569', '1987-06-25', 'FI_MGR', '12000.00', '0.00', '101', '100'),
('109', 'Daniel', 'Faviet', 'DFAVIET', '515.124.4169', '1987-06-26', 'FI_ACCOUNT', '9000.00', '0.00', '108', '100'),
('110', 'John', 'Chen', 'JCHEN', '515.124.4269', '1987-06-27', 'FI_ACCOUNT', '8200.00', '0.00', '108', '100'),
('111', 'Ismael', 'Sciarra', 'ISCIARRA', '515.124.4369', '1987-06-28', 'FI_ACCOUNT', '7700.00', '0.00', '108', '100'),
('112', 'Jose Manuel', 'Urman', 'JMURMAN', '515.124.4469', '1987-06-29', 'FI_ACCOUNT', '7800.00', '0.00', '108', '100'),
('113', 'Luis', 'Popp', 'LPOPP', '515.124.4567', '1987-06-30', 'FI_ACCOUNT', '6900.00', '0.00', '108', '100'),
('114', 'Den', 'Raphaely', 'DRAPHEAL', '515.127.4561', '1987-07-01', 'PU_MAN', '11000.00', '0.00', '100', '30'),
('115', 'Alexander', 'Khoo', 'AKHOO', '515.127.4562', '1987-07-02', 'PU_CLERK', '3100.00', '0.00', '114', '30'),
('116', 'Shelli', 'Baida', 'SBAIDA', '515.127.4563', '1987-07-03', 'PU_CLERK', '2900.00', '0.00', '114', '30'),
('117', 'Sigal', 'Tobias', 'STOBIAS', '515.127.4564', '1987-07-04', 'PU_CLERK', '2800.00', '0.00', '114', '30'),
('118', 'Guy', 'Himuro', 'GHIMURO', '515.127.4565', '1987-07-05', 'PU_CLERK', '2600.00', '0.00', '114', '30'),
('119', 'Karen', 'Colmenares', 'KCOLMENA', '515.127.4566', '1987-07-06', 'PU_CLERK', '2500.00', '0.00', '114', '30'),
('120', 'Matthew', 'Weiss', 'MWEISS', '650.123.1234', '1987-07-07', 'ST_MAN', '8000.00', '0.00', '100', '50'),
('121', 'Adam', 'Fripp', 'AFRIPP', '650.123.2234', '1987-07-08', 'ST_MAN', '8200.00', '0.00', '100', '50'),
('122', 'Payam', 'Kaufling', 'PKAUFLIN', '650.123.3234', '1987-07-09', 'ST_MAN', '7900.00', '0.00', '100', '50'),
('123', 'Shanta', 'Vollman', 'SVOLLMAN', '650.123.4234', '1987-07-10', 'ST_MAN', '6500.00', '0.00', '100', '50'),
('124', 'Kevin', 'Mourgos', 'KMOURGOS', '650.123.5234', '1987-07-11', 'ST_MAN', '5800.00', '0.00', '100', '50'),
('125', 'Julia', 'Nayer', 'JNAYER', '650.124.1214', '1987-07-12', 'ST_CLERK', '3200.00', '0.00', '120', '50'),
('126', 'Irene', 'Mikkilineni', 'IMIKKILI', '650.124.1224', '1987-07-13', 'ST_CLERK', '2700.00', '0.00', '120', '50'),
('127', 'James', 'Landry', 'JLANDRY', '650.124.1334', '1987-07-14', 'ST_CLERK', '2400.00', '0.00', '120', '50'),
('128', 'Steven', 'Markle', 'SMARKLE', '650.124.1434', '1987-07-15', 'ST_CLERK', '2200.00', '0.00', '120', '50'),
('129', 'Laura', 'Bissot', 'LBISSOT', '650.124.5234', '1987-07-16', 'ST_CLERK', '3300.00', '0.00', '121', '50'),
('130', 'Mozhe', 'Atkinson', 'MATKINSO', '650.124.6234', '1987-07-17', 'ST_CLERK', '2800.00', '0.00', '121', '50'),
('131', 'James', 'Marlow', 'JAMRLOW', '650.124.7234', '1987-07-18', 'ST_CLERK', '2500.00', '0.00', '121', '50'),
('132', 'TJ', 'Olson', 'TJOLSON', '650.124.8234', '1987-07-19', 'ST_CLERK', '2100.00', '0.00', '121', '50'),
('133', 'Jason', 'Mallin', 'JMALLIN', '650.127.1934', '1987-07-20', 'ST_CLERK', '3300.00', '0.00', '122', '50'),
('134', 'Michael', 'Rogers', 'MROGERS', '650.127.1834', '1987-07-21', 'ST_CLERK', '2900.00', '0.00', '122', '50'),
('135', 'Ki', 'Gee', 'KGEE', '650.127.1734', '1987-07-22', 'ST_CLERK', '2400.00', '0.00', '122', '50'),
('136', 'Hazel', 'Philtanker', 'HPHILTAN', '650.127.1634', '1987-07-23', 'ST_CLERK', '2200.00', '0.00', '122', '50'),
('137', 'Renske', 'Ladwig', 'RLADWIG', '650.121.1234', '1987-07-24', 'ST_CLERK', '3600.00', '0.00', '123', '50'),
('138', 'Stephen', 'Stiles', 'SSTILES', '650.121.2034', '1987-07-25', 'ST_CLERK', '3200.00', '0.00', '123', '50'),
('139', 'John', 'Seo', 'JSEO', '650.121.2019', '1987-07-26', 'ST_CLERK', '2700.00', '0.00', '123', '50'),
('140', 'Joshua', 'Patel', 'JPATEL', '650.121.1834', '1987-07-27', 'ST_CLERK', '2500.00', '0.00', '123', '50'),
('141', 'Trenna', 'Rajs', 'TRAJS', '650.121.8009', '1987-07-28', 'ST_CLERK', '3500.00', '0.00', '124', '50'),
('142', 'Curtis', 'Davies', 'CDAVIES', '650.121.2994', '1987-07-29', 'ST_CLERK', '3100.00', '0.00', '124', '50'),
('143', 'Randall', 'Matos', 'RMATOS', '650.121.2874', '1987-07-30', 'ST_CLERK', '2600.00', '0.00', '124', '50'),
('144', 'Peter', 'Vargas', 'PVARGAS', '650.121.2004', '1987-07-31', 'ST_CLERK', '2500.00', '0.00', '124', '50'),
('145', 'John', 'Russell', 'JRUSSEL', '011.44.1344.429268', '1987-08-01', 'SA_MAN', '14000.00', '0.40', '100', '80'),
('146', 'Karen', 'Partners', 'KPARTNER', '011.44.1344.467268', '1987-08-02', 'SA_MAN', '13500.00', '0.30', '100', '80'),
('147', 'Alberto', 'Errazuriz', 'AERRAZUR', '011.44.1344.429278', '1987-08-03', 'SA_MAN', '12000.00', '0.30', '100', '80'),
('148', 'Gerald', 'Cambrault', 'GCAMBRAU', '011.44.1344.619268', '1987-08-04', 'SA_MAN', '11000.00', '0.30', '100', '80'),
('149', 'Eleni', 'Zlotkey', 'EZLOTKEY', '011.44.1344.429018', '1987-08-05', 'SA_MAN', '10500.00', '0.20', '100', '80'),
('150', 'Peter', 'Tucker', 'PTUCKER', '011.44.1344.129268', '1987-08-06', 'SA_REP', '10000.00', '0.30', '145', '80'),
('151', 'David', 'Bernstein', 'DBERNSTE', '011.44.1344.345268', '1987-08-07', 'SA_REP', '9500.00', '0.25', '145', '80'),
('152', 'Peter', 'Hall', 'PHALL', '011.44.1344.478968', '1987-08-08', 'SA_REP', '9000.00', '0.25', '145', '80'),
('153', 'Christopher', 'Olsen', 'COLSEN', '011.44.1344.498718', '1987-08-09', 'SA_REP', '8000.00', '0.20', '145', '80'),
('154', 'Nanette', 'Cambrault', 'NCAMBRAU', '011.44.1344.987668', '1987-08-10', 'SA_REP', '7500.00', '0.20', '145', '80'),
('155', 'Oliver', 'Tuvault', 'OTUVAULT', '011.44.1344.486508', '1987-08-11', 'SA_REP', '7000.00', '0.15', '145', '80'),
('156', 'Janette', 'King', 'JKING', '011.44.1345.429268', '1987-08-12', 'SA_REP', '10000.00', '0.35', '146', '80'),
('157', 'Patrick', 'Sully', 'PSULLY', '011.44.1345.929268', '1987-08-13', 'SA_REP', '9500.00', '0.35', '146', '80'),
('158', 'Allan', 'McEwen', 'AMCEWEN', '011.44.1345.829268', '1987-08-14', 'SA_REP', '9000.00', '0.35', '146', '80'),
('159', 'Lindsey', 'Smith', 'LSMITH', '011.44.1345.729268', '1987-08-15', 'SA_REP', '8000.00', '0.30', '146', '80'),
('160', 'Louise', 'Doran', 'LDORAN', '011.44.1345.629268', '1987-08-16', 'SA_REP', '7500.00', '0.30', '146', '80'),
('161', 'Sarath', 'Sewall', 'SSEWALL', '011.44.1345.529268', '1987-08-17', 'SA_REP', '7000.00', '0.25', '146', '80'),
('162', 'Clara', 'Vishney', 'CVISHNEY', '011.44.1346.129268', '1987-08-18', 'SA_REP', '10500.00', '0.25', '147', '80'),
('163', 'Danielle', 'Greene', 'DGREENE', '011.44.1346.229268', '1987-08-19', 'SA_REP', '9500.00', '0.15', '147', '80'),
('164', 'Mattea', 'Marvins', 'MMARVINS', '011.44.1346.329268', '1987-08-20', 'SA_REP', '7200.00', '0.10', '147', '80'),
('165', 'David', 'Lee', 'DLEE', '011.44.1346.529268', '1987-08-21', 'SA_REP', '6800.00', '0.10', '147', '80'),
('166', 'Sundar', 'Ande', 'SANDE', '011.44.1346.629268', '1987-08-22', 'SA_REP', '6400.00', '0.10', '147', '80'),
('167', 'Amit', 'Banda', 'ABANDA', '011.44.1346.729268', '1987-08-23', 'SA_REP', '6200.00', '0.10', '147', '80'),
('168', 'Lisa', 'Ozer', 'LOZER', '011.44.1343.929268', '1987-08-24', 'SA_REP', '11500.00', '0.25', '148', '80'),
('169', 'Harrison', 'Bloom', 'HBLOOM', '011.44.1343.829268', '1987-08-25', 'SA_REP', '10000.00', '0.20', '148', '80'),
('170', 'Tayler', 'Fox', 'TFOX', '011.44.1343.729268', '1987-08-26', 'SA_REP', '9600.00', '0.20', '148', '80'),
('171', 'William', 'Smith', 'WSMITH', '011.44.1343.629268', '1987-08-27', 'SA_REP', '7400.00', '0.15', '148', '80'),
('172', 'Elizabeth', 'Bates', 'EBATES', '011.44.1343.529268', '1987-08-28', 'SA_REP', '7300.00', '0.15', '148', '80'),
('173', 'Sundita', 'Kumar', 'SKUMAR', '011.44.1343.329268', '1987-08-29', 'SA_REP', '6100.00', '0.10', '148', '80'),
('174', 'Ellen', 'Abel', 'EABEL', '011.44.1644.429267', '1987-08-30', 'SA_REP', '11000.00', '0.30', '149', '80'),
('175', 'Alyssa', 'Hutton', 'AHUTTON', '011.44.1644.429266', '1987-08-31', 'SA_REP', '8800.00', '0.25', '149', '80'),
('176', 'Jonathon', 'Taylor', 'JTAYLOR', '011.44.1644.429265', '1987-09-01', 'SA_REP', '8600.00', '0.20', '149', '80'),
('177', 'Jack', 'Livingston', 'JLIVINGS', '011.44.1644.429264', '1987-09-02', 'SA_REP', '8400.00', '0.20', '149', '80'),
('178', 'Kimberely', 'Grant', 'KGRANT', '011.44.1644.429263', '1987-09-03', 'SA_REP', '7000.00', '0.15', '149', '0'),
('179', 'Charles', 'Johnson', 'CJOHNSON', '011.44.1644.429262', '1987-09-04', 'SA_REP', '6200.00', '0.10', '149', '80'),
('180', 'Winston', 'Taylor', 'WTAYLOR', '650.507.9876', '1987-09-05', 'SH_CLERK', '3200.00', '0.00', '120', '50'),
('181', 'Jean', 'Fleaur', 'JFLEAUR', '650.507.9877', '1987-09-06', 'SH_CLERK', '3100.00', '0.00', '120', '50'),
('182', 'Martha', 'Sullivan', 'MSULLIVA', '650.507.9878', '1987-09-07', 'SH_CLERK', '2500.00', '0.00', '120', '50'),
('183', 'Girard', 'Geoni', 'GGEONI', '650.507.9879', '1987-09-08', 'SH_CLERK', '2800.00', '0.00', '120', '50'),
('184', 'Nandita', 'Sarchand', 'NSARCHAN', '650.509.1876', '1987-09-09', 'SH_CLERK', '4200.00', '0.00', '121', '50'),
('185', 'Alexis', 'Bull', 'ABULL', '650.509.2876', '1987-09-10', 'SH_CLERK', '4100.00', '0.00', '121', '50'),
('186', 'Julia', 'Dellinger', 'JDELLING', '650.509.3876', '1987-09-11', 'SH_CLERK', '3400.00', '0.00', '121', '50'),
('187', 'Anthony', 'Cabrio', 'ACABRIO', '650.509.4876', '1987-09-12', 'SH_CLERK', '3000.00', '0.00', '121', '50'),
('188', 'Kelly', 'Chung', 'KCHUNG', '650.505.1876', '1987-09-13', 'SH_CLERK', '3800.00', '0.00', '122', '50'),
('189', 'Jennifer', 'Dilly', 'JDILLY', '650.505.2876', '1987-09-14', 'SH_CLERK', '3600.00', '0.00', '122', '50'),
('190', 'Timothy', 'Gates', 'TGATES', '650.505.3876', '1987-09-15', 'SH_CLERK', '2900.00', '0.00', '122', '50'),
('191', 'Randall', 'Perkins', 'RPERKINS', '650.505.4876', '1987-09-16', 'SH_CLERK', '2500.00', '0.00', '122', '50'),
('192', 'Sarah', 'Bell', 'SBELL', '650.501.1876', '1987-09-17', 'SH_CLERK', '4000.00', '0.00', '123', '50'),
('193', 'Britney', 'Everett', 'BEVERETT', '650.501.2876', '1987-09-18', 'SH_CLERK', '3900.00', '0.00', '123', '50'),
('194', 'Samuel', 'McCain', 'SMCCAIN', '650.501.3876', '1987-09-19', 'SH_CLERK', '3200.00', '0.00', '123', '50'),
('195', 'Vance', 'Jones', 'VJONES', '650.501.4876', '1987-09-20', 'SH_CLERK', '2800.00', '0.00', '123', '50'),
('196', 'Alana', 'Walsh', 'AWALSH', '650.507.9811', '1987-09-21', 'SH_CLERK', '3100.00', '0.00', '124', '50'),
('197', 'Kevin', 'Feeney', 'KFEENEY', '650.507.9822', '1987-09-22', 'SH_CLERK', '3000.00', '0.00', '124', '50'),
('198', 'Donald', 'OConnell', 'DOCONNEL', '650.507.9833', '1987-09-23', 'SH_CLERK', '2600.00', '0.00', '124', '50'),
('199', 'Douglas', 'Grant', 'DGRANT', '650.507.9844', '1987-09-24', 'SH_CLERK', '2600.00', '0.00', '124', '50'),
('200', 'Jennifer', 'Whalen', 'JWHALEN', '515.123.4444', '1987-09-25', 'AD_ASST', '4400.00', '0.00', '101', '10'),
('201', 'Michael', 'Hartstein', 'MHARTSTE', '515.123.5555', '1987-09-26', 'MK_MAN', '13000.00', '0.00', '100', '20'),
('202', 'Pat', 'Fay', 'PFAY', '603.123.6666', '1987-09-27', 'MK_REP', '6000.00', '0.00', '201', '20'),
('203', 'Susan', 'Mavris', 'SMAVRIS', '515.123.7777', '1987-09-28', 'HR_REP', '6500.00', '0.00', '101', '40'),
('204', 'Hermann', 'Baer', 'HBAER', '515.123.8888', '1987-09-29', 'PR_REP', '10000.00', '0.00', '101', '70'),
('205', 'Shelley', 'Higgins', 'SHIGGINS', '515.123.8080', '1987-09-30', 'AC_MGR', '12000.00', '0.00', '101', '110'),
('206', 'William', 'Gietz', 'WGIETZ', '515.123.8181', '1987-10-01', 'AC_ACCOUNT', '8300.00', '0.00', '205', '110');

-- --------------------------------------------------------

--
-- Table structure for table `job_history`
--

CREATE TABLE IF NOT EXISTS `job_history` (
  `EMPLOYEE_ID` decimal(6,0) NOT NULL,
  `START_DATE` date NOT NULL,
  `END_DATE` date NOT NULL,
  `JOB_ID` varchar(10) NOT NULL,
  `DEPARTMENT_ID` decimal(4,0) DEFAULT NULL,
  PRIMARY KEY (`EMPLOYEE_ID`,`START_DATE`),
  KEY `JHIST_DEPARTMENT_IX` (`DEPARTMENT_ID`),
  KEY `JHIST_EMPLOYEE_IX` (`EMPLOYEE_ID`),
  KEY `JHIST_JOB_IX` (`JOB_ID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `job_history`
--

INSERT INTO `job_history` (`EMPLOYEE_ID`, `START_DATE`, `END_DATE`, `JOB_ID`, `DEPARTMENT_ID`) VALUES
('102', '1993-01-13', '1998-07-24', 'IT_PROG', '60'),
('101', '1989-09-21', '1993-10-27', 'AC_ACCOUNT', '110'),
('101', '1993-10-28', '1997-03-15', 'AC_MGR', '110'),
('201', '1996-02-17', '1999-12-19', 'MK_REP', '20'),
('114', '1998-03-24', '1999-12-31', 'ST_CLERK', '50'),
('122', '1999-01-01', '1999-12-31', 'ST_CLERK', '50'),
('200', '1987-09-17', '1993-06-17', 'AD_ASST', '90'),
('176', '1998-03-24', '1998-12-31', 'SA_REP', '80'),
('176', '1999-01-01', '1999-12-31', 'SA_MAN', '80'),
('200', '1994-07-01', '1998-12-31', 'AC_ACCOUNT', '90'),
('0', '0000-00-00', '0000-00-00', '', '0');

-- --------------------------------------------------------

--
-- Table structure for table `jobs`
--

CREATE TABLE IF NOT EXISTS `jobs` (
  `JOB_ID` varchar(10) NOT NULL DEFAULT '',
  `JOB_TITLE` varchar(35) NOT NULL,
  `MIN_SALARY` decimal(6,0) DEFAULT NULL,
  `MAX_SALARY` decimal(6,0) DEFAULT NULL,
  PRIMARY KEY (`JOB_ID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `jobs`
--

INSERT INTO `jobs` (`JOB_ID`, `JOB_TITLE`, `MIN_SALARY`, `MAX_SALARY`) VALUES
('AD_PRES', 'President', '20000', '40000'),
('AD_VP', 'Administration Vice President', '15000', '30000'),
('AD_ASST', 'Administration Assistant', '3000', '6000'),
('FI_MGR', 'Finance Manager', '8200', '16000'),
('FI_ACCOUNT', 'Accountant', '4200', '9000'),
('AC_MGR', 'Accounting Manager', '8200', '16000'),
('AC_ACCOUNT', 'Public Accountant', '4200', '9000'),
('SA_MAN', 'Sales Manager', '10000', '20000'),
('SA_REP', 'Sales Representative', '6000', '12000'),
('PU_MAN', 'Purchasing Manager', '8000', '15000'),
('PU_CLERK', 'Purchasing Clerk', '2500', '5500'),
('ST_MAN', 'Stock Manager', '5500', '8500'),
('ST_CLERK', 'Stock Clerk', '2000', '5000'),
('SH_CLERK', 'Shipping Clerk', '2500', '5500'),
('IT_PROG', 'Programmer', '4000', '10000'),
('MK_MAN', 'Marketing Manager', '9000', '15000'),
('MK_REP', 'Marketing Representative', '4000', '9000'),
('HR_REP', 'Human Resources Representative', '4000', '9000'),
('PR_REP', 'Public Relations Representative', '4500', '10500');

-- --------------------------------------------------------

--
-- Table structure for table `locations`
--

CREATE TABLE IF NOT EXISTS `locations` (
  `LOCATION_ID` decimal(4,0) NOT NULL DEFAULT '0',
  `STREET_ADDRESS` varchar(40) DEFAULT NULL,
  `POSTAL_CODE` varchar(12) DEFAULT NULL,
  `CITY` varchar(30) NOT NULL,
  `STATE_PROVINCE` varchar(25) DEFAULT NULL,
  `COUNTRY_ID` varchar(2) DEFAULT NULL,
  PRIMARY KEY (`LOCATION_ID`),
  KEY `LOC_CITY_IX` (`CITY`),
  KEY `LOC_COUNTRY_IX` (`COUNTRY_ID`),
  KEY `LOC_STATE_PROVINCE_IX` (`STATE_PROVINCE`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `locations`
--

INSERT INTO `locations` (`LOCATION_ID`, `STREET_ADDRESS`, `POSTAL_CODE`, `CITY`, `STATE_PROVINCE`, `COUNTRY_ID`) VALUES
('1000', '1297 Via Cola di Rie', '989', 'Roma', '', 'IT'),
('1100', '93091 Calle della Testa', '10934', 'Venice', '', 'IT'),
('1200', '2017 Shinjuku-ku', '1689', 'Tokyo', 'Tokyo Prefecture', 'JP'),
('1300', '9450 Kamiya-cho', '6823', 'Hiroshima', '', 'JP'),
('1400', '2014 Jabberwocky Rd', '26192', 'Southlake', 'Texas', 'US'),
('1500', '2011 Interiors Blvd', '99236', 'South San Francisco', 'California', 'US'),
('1600', '2007 Zagora St', '50090', 'South Brunswick', 'New Jersey', 'US'),
('1700', '2004 Charade Rd', '98199', 'Seattle', 'Washington', 'US'),
('1800', '147 Spadina Ave', 'M5V 2L7', 'Toronto', 'Ontario', 'CA'),
('1900', '6092 Boxwood St', 'YSW 9T2', 'Whitehorse', 'Yukon', 'CA'),
('2000', '40-5-12 Laogianggen', '190518', 'Beijing', '', 'CN'),
('2100', '1298 Vileparle (E)', '490231', 'Bombay', 'Maharashtra', 'IN'),
('2200', '12-98 Victoria Street', '2901', 'Sydney', 'New South Wales', 'AU'),
('2300', '198 Clementi North', '540198', 'Singapore', '', 'SG'),
('2400', '8204 Arthur St', '', 'London', '', 'UK'),
('2500', '"Magdalen Centre', ' The Oxford ', 'OX9 9ZB', 'Oxford', 'Ox'),
('2600', '9702 Chester Road', '9629850293', 'Stretford', 'Manchester', 'UK'),
('2700', 'Schwanthalerstr. 7031', '80925', 'Munich', 'Bavaria', 'DE'),
('2800', 'Rua Frei Caneca 1360', '01307-002', 'Sao Paulo', 'Sao Paulo', 'BR'),
('2900', '20 Rue des Corps-Saints', '1730', 'Geneva', 'Geneve', 'CH'),
('3000', 'Murtenstrasse 921', '3095', 'Bern', 'BE', 'CH'),
('3100', 'Pieter Breughelstraat 837', '3029SK', 'Utrecht', 'Utrecht', 'NL'),
('3200', 'Mariano Escobedo 9991', '11932', 'Mexico City', '"Distrito Federal', '"');

-- --------------------------------------------------------

--
-- Table structure for table `regions`
--

CREATE TABLE IF NOT EXISTS `regions` (
  `REGION_ID` decimal(5,0) NOT NULL,
  `REGION_NAME` varchar(25) DEFAULT NULL,
  PRIMARY KEY (`REGION_ID`),
  UNIQUE KEY `sss` (`REGION_NAME`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

--
-- Dumping data for table `regions`
--

INSERT INTO `regions` (`REGION_ID`, `REGION_NAME`) VALUES
('1', 'Europe\r'),
('2', 'Americas\r'),
('3', 'Asia\r'),
('4', 'Middle East and Africa\r');

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

Practice 1

  编写一条SQL查询语句使用别名“First Name”和“Last Name”来显示employees表中的名字(first_name,last_name)

记住别名控制就行。

SELECT first_name 'First Name', last_name 'Last Name' FROM employees;

Practice 2

  编写一条SQL查询语句从employees表中获取department ID,相同的department ID只显示一条

SELECT DISTINCT department_id FROM employees;

Practice 3

  编写一条SQL查询语句,从employees表中获取employee的所有数据,并以first_name进行降序排列显示

SELECT * FROM employees ORDER BY first_name DESC;

Practice 4

  编写一条SQL查询语句,获取所有employee的names(first_name, last_name), salary, PF(PF是salary的15%计算而来)

SELECT CONCAT(first_name, " ", last_name) names, salary, salary*0.15 PF FROM employees;

Practice 5

  编写一条SQL查询语句,获取employee ID,name(first_name,last_name),salary,并以salary升序排列

ORDER BY关键字进行排序时,默认就是以升序排列的。

SELECT employee_id, CONCAT(first_name, " ", last_name) names, salary FROM employees ORDER BY salary;

Practice 6

  编写一条SQL查询语句来计算总共需要支付给employee的salary

使用sum()进行计算。

SELECT sum(salary) total_salary FROM employees;

Practice 7

  编写一条SQL查询语句来获取employees表中的最大和最小salary

使用max()和min()进行计算

SELECT MAX(salary) max_salary, MIN(salary) min_salary FROM employees;

Practice 8

  编写一条SQL查询语句,从employees表中获取平均salary和employee的数量

SELECT AVG(salary) avg_salary, COUNT(*) num_employees FROM employees

Practice 9

  编写一条SQL查询语句,获取为该公司工作的employee数量

SELECT COUNT(*) FROM employees;

Practice 10

  编写一条SQL查询语句,从employees表中获取可用的jobs数量

SELECT COUNT(DISTINCT job_id) FROM employees;

Practice 11

  编写一条SQL查询语句,从employees表中获取所有employee的first_name,使用大写显示

SELECT UPPER(first_name) upper_first_name FROM employees;

Practice 12

  编写一条SQL查询语句,从employees表中获取first_name的钱三个字母

SELECT SUBSTRING(first_name, 1, 3) FROM employees;

Practice 13

  编写一条SQL查询语句计算171*214+625的值

SELECT 171*214+625 sum;

Practice 14

  编写一条SQL查询语句,从employees表中获取名字(例如 Ellen Abel, Sundar Ande)

使用CONCAT()字符串函数。

SELECT CONCAT(first_name, " ", last_name) name FROM employees;

Practice 15

  编写一条SQL查询语句,从employees表中获取first_name,并去掉first_name两边的空格

使用TRIM()字符串函数。

SELECT (first_name) FROM employees;

Practice 16

  编写一条SQL查询语句,从employees表中获取names(first_name,last_name)的长度

使用LENGTH()字符串函数。

SELECT LENGTH(first_name) first_name_length, LENGTH(last_name) last_name_length FROM employees;

Practice 17

  编写一条SQL查询语句,检查employees表中first_name列是否有包含数字的行

使用REGEXP

SELECT first_name FROM employees WHERE first_name REGEXP '[0-9]';

Practice 18

  编写一条SQL查询语句,选择employees表中的前十条记录

SELECT * FROM employees LIMIT 10;

Practice 19

  编写一条SQL查询语句,获取每个employee的月薪,精确到小数点后两位。

SELECT first_name, last_name, round(salary/12,2) 'Monthly Salary' FROM employees;

发表评论

电子邮件地址不会被公开。 必填项已用*标注

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d 博主赞过: