Oracle入门初探---第一章 批量创建表、索引并插入测试数据

Oracle系列文章目录

第一章 批量创建表并插入测试数据

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前言

使用数据库，首先要向数据库中加入大量数据，本篇文章提供了一些测试数据

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一、创建表和索引

-- 创建数据库和索引
-- 创建 3 个示例表
CREATE TABLE department
    ( dept_id    INTEGER NOT NULL PRIMARY KEY
    , dept_name  VARCHAR(50) NOT NULL
    ) ;
CREATE TABLE job
    ( job_id         INTEGER NOT NULL PRIMARY KEY
    , job_title      VARCHAR(50) NOT NULL
    ) ;
CREATE TABLE employee
    ( emp_id    INTEGER NOT NULL PRIMARY KEY
    , emp_name  VARCHAR(50) NOT NULL
    , sex       VARCHAR(10) NOT NULL
    , dept_id   INTEGER NOT NULL
    , manager   INTEGER
    , hire_date DATE NOT NULL
    , job_id    INTEGER NOT NULL
    , salary    NUMERIC(8,2) NOT NULL
    , bonus     NUMERIC(8,2)
    , email     VARCHAR(100) NOT NULL
    , CONSTRAINT ck_emp_sex CHECK (sex IN ('男', '女'))
    , CONSTRAINT ck_emp_salary CHECK (salary > 0)
    , CONSTRAINT uk_emp_email UNIQUE (email)
    , CONSTRAINT fk_emp_dept FOREIGN KEY (dept_id) REFERENCES department(dept_id)
    , CONSTRAINT fk_emp_job FOREIGN KEY (job_id) REFERENCES job(job_id)
    , CONSTRAINT fk_emp_manager FOREIGN KEY (manager) REFERENCES employee(emp_id)
    ) ;
CREATE INDEX idx_emp_name ON employee(emp_name);
CREATE INDEX idx_emp_dept ON employee(dept_id);
CREATE INDEX idx_emp_job ON employee(job_id);
CREATE INDEX idx_emp_manager ON employee(manager);

二、向表中加入数据

INSERT INTO department(dept_id, dept_name) VALUES (1, '行政管理部');
INSERT INTO department(dept_id, dept_name) VALUES (2, '人力资源部');
INSERT INTO department(dept_id, dept_name) VALUES (3, '财务部');
INSERT INTO department(dept_id, dept_name) VALUES (4, '研发部');
INSERT INTO department(dept_id, dept_name) VALUES (5, '销售部');
INSERT INTO department(dept_id, dept_name) VALUES (6, '保卫部');

INSERT INTO job(job_id, job_title) VALUES (1, '总经理');
INSERT INTO job(job_id, job_title) VALUES (2, '副总经理');
INSERT INTO job(job_id, job_title) VALUES (3, '人力资源总监');
INSERT INTO job(job_id, job_title) VALUES (4, '人力资源专员');
INSERT INTO job(job_id, job_title) VALUES (5, '财务经理');
INSERT INTO job(job_id, job_title) VALUES (6, '会计');
INSERT INTO job(job_id, job_title) VALUES (7, '开发经理');
INSERT INTO job(job_id, job_title) VALUES (8, '程序员');
INSERT INTO job(job_id, job_title) VALUES (9, '销售经理');
INSERT INTO job(job_id, job_title) VALUES (10, '销售人员');

INSERT INTO employee VALUES (1, '刘备', '男', 1, NULL, TO_DATE('2000-01-01', 'YYYY-MM-DD'), 1, 30000, 10000, '[email protected]');
INSERT INTO employee VALUES (2, '关羽', '男', 1, 1, TO_DATE('2000-01-01', 'YYYY-MM-DD'), 2, 26000, 10000, '[email protected]');
INSERT INTO employee VALUES (3, '张飞', '男', 1, 1, TO_DATE('2000-01-01', 'YYYY-MM-DD'), 2, 24000, 10000, '[email protected]');
INSERT INTO employee VALUES (4, '诸葛亮', '男', 2, 1, TO_DATE('2006-03-15', 'YYYY-MM-DD'), 3, 24000, 8000, '[email protected]');
INSERT INTO employee VALUES (5, '黄忠', '男', 2, 4, TO_DATE('2008-10-25', 'YYYY-MM-DD'), 4, 8000, NULL, '[email protected]');
INSERT INTO employee VALUES (6, '魏延', '男', 2, 4, TO_DATE('2007-04-01', 'YYYY-MM-DD'), 4, 7500, NULL, '[email protected]');
INSERT INTO employee VALUES (7, '孙尚香', '女', 3, 1, TO_DATE('2002-08-08', 'YYYY-MM-DD'), 5, 12000, 5000, '[email protected]');
INSERT INTO employee VALUES (8, '孙丫鬟', '女', 3, 7, TO_DATE('2002-08-08', 'YYYY-MM-DD'), 6, 6000, NULL, '[email protected]');
INSERT INTO employee VALUES (9, '赵云', '男', 4, 1, TO_DATE('2005-12-19', 'YYYY-MM-DD'), 7, 15000, 6000, '[email protected]');
INSERT INTO employee VALUES (10, '廖化', '男', 4, 9, TO_DATE('2009-02-17', 'YYYY-MM-DD'), 8, 6500, NULL, '[email protected]');
INSERT INTO employee VALUES (11, '关平', '男', 4, 9, TO_DATE('2011-07-24', 'YYYY-MM-DD'), 8, 6800, NULL, '[email protected]');
INSERT INTO employee VALUES (12, '赵氏', '女', 4, 9, TO_DATE('2011-11-10', 'YYYY-MM-DD'), 8, 6600, NULL, '[email protected]');
INSERT INTO employee VALUES (13, '关兴', '男', 4, 9, TO_DATE('2011-07-30', 'YYYY-MM-DD'), 8, 7000, NULL, '[email protected]');
INSERT INTO employee VALUES (14, '张苞', '男', 4, 9, TO_DATE('2012-05-31', 'YYYY-MM-DD'), 8, 6500, NULL, '[email protected]');
INSERT INTO employee VALUES (15, '赵统', '男', 4, 9, TO_DATE('2012-05-03', 'YYYY-MM-DD'), 8, 6000, NULL, '[email protected]');
INSERT INTO employee VALUES (16, '周仓', '男', 4, 9, TO_DATE('2010-02-20', 'YYYY-MM-DD'), 8, 8000, NULL, '[email protected]');
INSERT INTO employee VALUES (17, '马岱', '男', 4, 9, TO_DATE('2014-09-16', 'YYYY-MM-DD'), 8, 5800, NULL, '[email protected]');
INSERT INTO employee VALUES (18, '法正', '男', 5, 2, TO_DATE('2017-04-09', 'YYYY-MM-DD'), 9, 10000, 5000, '[email protected]');
INSERT INTO employee VALUES (19, '庞统', '男', 5, 18, TO_DATE('2017-06-06', 'YYYY-MM-DD'), 10, 4100, 2000, '[email protected]');
INSERT INTO employee VALUES (20, '蒋琬', '男', 5, 18, TO_DATE('2018-01-28', 'YYYY-MM-DD'), 10, 4000, 1500, '[email protected]');
INSERT INTO employee VALUES (21, '黄权', '男', 5, 18, TO_DATE('2018-03-14', 'YYYY-MM-DD'), 10, 4200, NULL, '[email protected]');
INSERT INTO employee VALUES (22, '糜竺', '男', 5, 18, TO_DATE('2018-03-27', 'YYYY-MM-DD'), 10, 4300, NULL, '[email protected]');
INSERT INTO employee VALUES (23, '邓芝', '男', 5, 18, TO_DATE('2018-11-11', 'YYYY-MM-DD'), 10, 4000, NULL, '[email protected]');
INSERT INTO employee VALUES (24, '简雍', '男', 5, 18, TO_DATE('2019-05-11', 'YYYY-MM-DD'), 10, 4800, NULL, '[email protected]');
INSERT INTO employee VALUES (25, '孙乾', '男', 5, 18, TO_DATE('2018-10-09', 'YYYY-MM-DD'), 10, 4700, NULL, '[email protected]');

总结

这些数据导入完成后，可以进行增删改查一系列操作的测试了，不用自己再费劲造数据集合了，因为自己找测试数据是很麻烦的一件事，是可以进行三表联查，分组查询，排序等一系列操作