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Commit 859873b6 by Patryk Czarnik
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Skrypty tworzoące przykładową bazę HR

parent 52665d25
Showing with 421 additions and 0 deletions
hr-postgresql/0-admin.sql 0 → 100644
-- Wykonac jako user postgres (administrator)
-- Pozostale pliki juz jako user alx
DROP DATABASE IF EXISTS hr;
--DROP ROLE IF EXISTS alx;
--CREATE USER alx PASSWORD 'abc123';
CREATE DATABASE hr ENCODING 'utf-8' OWNER alx;
hr-postgresql/1-hr-create-tabele.sql 0 → 100644
CREATE TABLE regions (
region_id INTEGER CONSTRAINT region_id_nn NOT NULL,
region_name VARCHAR(25),
CONSTRAINT reg_id_pk PRIMARY KEY (region_id)
);
CREATE TABLE countries (
country_id CHAR(2) CONSTRAINT country_id_nn NOT NULL,
country_name VARCHAR(40),
region_id INTEGER,
CONSTRAINT country_c_id_pk PRIMARY KEY (country_id),
CONSTRAINT countr_reg_fk FOREIGN KEY (region_id) REFERENCES regions(region_id)
);
CREATE TABLE locations (
location_id INTEGER,
street_address VARCHAR(40),
postal_code VARCHAR(12),
city VARCHAR(30) CONSTRAINT loc_city_nn NOT NULL,
state_province VARCHAR(25),
country_id CHAR(2),
CONSTRAINT loc_id_pk PRIMARY KEY (location_id),
CONSTRAINT loc_c_id_fk FOREIGN KEY (country_id) REFERENCES countries(country_id)
);
CREATE TABLE departments (
department_id INTEGER,
department_name VARCHAR(100) CONSTRAINT dept_name_nn NOT NULL,
manager_id INTEGER,
location_id INTEGER,
CONSTRAINT dept_id_pk PRIMARY KEY (department_id),
CONSTRAINT dept_loc_fk FOREIGN KEY (location_id) REFERENCES locations (location_id)
) ;
CREATE TABLE jobs (
job_id VARCHAR(10),
job_title VARCHAR(35) CONSTRAINT job_title_nn NOT NULL,
min_salary NUMERIC(8, 2),
max_salary NUMERIC(8, 2),
CONSTRAINT job_id_pk PRIMARY KEY(job_id)
);
CREATE TABLE employees (
employee_id INTEGER,
first_name VARCHAR(25),
last_name VARCHAR(30) CONSTRAINT emp_last_name_nn NOT NULL,
email VARCHAR(30) CONSTRAINT emp_email_nn NOT NULL,
phone_number VARCHAR(20),
hire_date DATE CONSTRAINT emp_hire_date_nn NOT NULL,
job_id VARCHAR(10) CONSTRAINT emp_job_nn NOT NULL,
salary NUMERIC(8, 2),
commission_pct NUMERIC(2, 2),
manager_id INTEGER,
department_id INTEGER,
CONSTRAINT emp_emp_id_pk PRIMARY KEY (employee_id),
CONSTRAINT emp_dept_fk FOREIGN KEY (department_id) REFERENCES departments,
CONSTRAINT emp_job_fk FOREIGN KEY (job_id) REFERENCES jobs (job_id),
CONSTRAINT emp_manager_fk FOREIGN KEY (manager_id) REFERENCES employees,
CONSTRAINT emp_salary_min CHECK (salary > 0),
CONSTRAINT emp_email_uk UNIQUE (email)
);
CREATE TABLE job_history (
employee_id INTEGER CONSTRAINT jhist_employee_nn NOT NULL,
start_date DATE CONSTRAINT jhist_start_date_nn NOT NULL,
end_date DATE CONSTRAINT jhist_end_date_nn NOT NULL,
job_id VARCHAR(10) CONSTRAINT jhist_job_nn NOT NULL,
department_id INTEGER,
CONSTRAINT jhist_date_interval CHECK (end_date > start_date),
CONSTRAINT jhist_emp_id_st_date_pk PRIMARY KEY (employee_id, start_date),
CONSTRAINT jhist_job_fk FOREIGN KEY (job_id) REFERENCES jobs,
CONSTRAINT jhist_emp_fk FOREIGN KEY (employee_id) REFERENCES employees,
CONSTRAINT jhist_dept_fk FOREIGN KEY (department_id) REFERENCES departments
);
hr-postgresql/2-hr-create-dodatki.sql 0 → 100644
COMMENT ON TABLE regions IS 'Regions table that contains region numbers and names. Contains 4 rows; references with the Countries table.';
COMMENT ON COLUMN regions.region_id IS 'Primary key of regions table.';
COMMENT ON COLUMN regions.region_name IS 'Names of regions. Locations are in the countries of these regions.';
COMMENT ON TABLE locations IS
'Locations table that contains specific address of a specific office,
warehouse, and/or production site of a company. Does not store addresses /
locations of customers. Contains 23 rows; references with the
departments and countries tables. ';
COMMENT ON COLUMN locations.location_id IS
'Primary key of locations table';
COMMENT ON COLUMN locations.street_address IS
'Street address of an office, warehouse, or production site of a company.
Contains building number and street name';
COMMENT ON COLUMN locations.postal_code IS
'Postal code of the location of an office, warehouse, or production site
of a company. ';
COMMENT ON COLUMN locations.city IS
'A not null column that shows city where an office, warehouse, or
production site of a company is located. ';
COMMENT ON COLUMN locations.state_province IS
'State or Province where an office, warehouse, or production site of a
company is located.';
COMMENT ON COLUMN locations.country_id IS
'Country where an office, warehouse, or production site of a company is
located. Foreign key to country_id column of the countries table.';
COMMENT ON TABLE departments IS
'Departments table that shows details of departments where employees
work. Contains 27 rows; references with locations, employees, and job_history tables.';
COMMENT ON COLUMN departments.department_id IS
'Primary key column of departments table.';
COMMENT ON COLUMN departments.department_name IS
'A not null column that shows name of a department. Administration,
Marketing, Purchasing, Human Resources, Shipping, IT, Executive, Public
Relations, Sales, Finance, and Accounting. ';
COMMENT ON COLUMN departments.manager_id IS
'Manager_id of a department. Foreign key to employee_id column of employees table. The manager_id column of the employee table references this column.';
COMMENT ON COLUMN departments.location_id IS
'Location id where a department is located. Foreign key to location_id column of locations table.';
COMMENT ON TABLE job_history IS
'Table that stores job history of the employees. If an employee
changes departments within the job or changes jobs within the department,
new rows get inserted into this table with old job information of the
employee. Contains a complex primary key: employee_id+start_date.
Contains 25 rows. References with jobs, employees, and departments tables.';
COMMENT ON COLUMN job_history.employee_id IS
'A not null column in the complex primary key employee_id+start_date.
Foreign key to employee_id column of the employee table';
COMMENT ON COLUMN job_history.start_date IS
'A not null column in the complex primary key employee_id+start_date.
Must be less than the end_date of the job_history table. (enforced by
constraint jhist_date_interval)';
COMMENT ON COLUMN job_history.end_date IS
'Last day of the employee in this job role. A not null column. Must be
greater than the start_date of the job_history table.
(enforced by constraint jhist_date_interval)';
COMMENT ON COLUMN job_history.job_id IS
'Job role in which the employee worked in the past; foreign key to
job_id column in the jobs table. A not null column.';
COMMENT ON COLUMN job_history.department_id IS
'Department id in which the employee worked in the past; foreign key to deparment_id column in the departments table';
COMMENT ON TABLE countries IS
'country table. Contains 25 rows. References with locations table.';
COMMENT ON COLUMN countries.country_id IS
'Primary key of countries table.';
COMMENT ON COLUMN countries.country_name IS
'Country name';
COMMENT ON COLUMN countries.region_id IS
'Region ID for the country. Foreign key to region_id column in the departments table.';
COMMENT ON TABLE jobs IS
'jobs table with job titles and salary ranges. Contains 19 rows.
References with employees and job_history table.';
COMMENT ON COLUMN jobs.job_id IS
'Primary key of jobs table.';
COMMENT ON COLUMN jobs.job_title IS
'A not null column that shows job title, e.g. AD_VP, FI_ACCOUNTANT';
COMMENT ON COLUMN jobs.min_salary IS
'Minimum salary for a job title.';
COMMENT ON COLUMN jobs.max_salary IS
'Maximum salary for a job title';
COMMENT ON TABLE employees IS
'employees table. Contains 107 rows. References with departments,
jobs, job_history tables. Contains a self reference.';
COMMENT ON COLUMN employees.employee_id IS
'Primary key of employees table.';
COMMENT ON COLUMN employees.first_name IS
'First name of the employee. A not null column.';
COMMENT ON COLUMN employees.last_name IS
'Last name of the employee. A not null column.';
COMMENT ON COLUMN employees.email IS
'Email id of the employee';
COMMENT ON COLUMN employees.phone_number IS
'Phone number of the employee; includes country code and area code';
COMMENT ON COLUMN employees.hire_date IS
'Date when the employee started on this job. A not null column.';
COMMENT ON COLUMN employees.job_id IS
'Current job of the employee; foreign key to job_id column of the
jobs table. A not null column.';
COMMENT ON COLUMN employees.salary IS
'Monthly salary of the employee. Must be greater
than zero (enforced by constraint emp_salary_min)';
COMMENT ON COLUMN employees.commission_pct IS
'Commission percentage of the employee; Only employees in sales
department elgible for commission percentage';
COMMENT ON COLUMN employees.manager_id IS
'Manager id of the employee; has same domain as manager_id in
departments table. Foreign key to employee_id column of employees table.
(useful for reflexive joins and CONNECT BY query)';
COMMENT ON COLUMN employees.department_id IS
'Department id where employee works; foreign key to department_id
column of the departments table';
CREATE SEQUENCE locations_seq START WITH 3300 INCREMENT BY 100 MAXVALUE 9900 NO CYCLE;
ALTER TABLE locations ALTER COLUMN location_id SET DEFAULT nextval('locations_seq');
CREATE SEQUENCE departments_seq START WITH 280 INCREMENT BY 10 MAXVALUE 9990 NO CYCLE;
ALTER TABLE departments ALTER COLUMN department_id SET DEFAULT nextval('departments_seq');
CREATE SEQUENCE employees_seq START WITH 207 INCREMENT BY 1 NO CYCLE;
ALTER TABLE employees ALTER COLUMN employee_id SET DEFAULT nextval('employees_seq');
CREATE OR REPLACE VIEW emp_details_view (
employee_id, job_id, manager_id, department_id, location_id, country_id, first_name, last_name, salary, commission_pct, department_name, job_title, city, state_province, country_name, region_name
) AS SELECT e.employee_id,
e.job_id,
e.manager_id,
e.department_id,
d.location_id,
l.country_id,
e.first_name,
e.last_name,
e.salary,
e.commission_pct,
d.department_name,
j.job_title,
l.city,
l.state_province,
c.country_name,
r.region_name
FROM employees e,
departments d,
jobs j,
locations l,
countries c,
regions r
WHERE e.department_id = d.department_id
AND d.location_id = l.location_id
AND l.country_id = c.country_id
AND c.region_id = r.region_id
AND j.job_id = e.job_id;
CREATE INDEX emp_department_ix ON employees(department_id);
CREATE INDEX emp_job_ix ON employees(job_id);
CREATE INDEX emp_manager_ix ON employees(manager_id);
CREATE INDEX emp_name_ix ON employees(last_name, first_name);
hr-postgresql/4-hr-moje-dodatki.sql 0 → 100644
CREATE OR REPLACE VIEW szczegoly_pracownika AS
SELECT e.employee_id, e.first_name, e.last_name, e.email, e.phone_number, e.manager_id AS manager_id,
department_id, d.department_name, d.manager_id AS department_manager_id,
location_id, l.street_address, l.city, l.postal_code,
country_id, c.country_name, region_id, r.region_name
FROM employees e
LEFT JOIN jobs j USING (job_id)
LEFT JOIN departments d USING (department_id)
LEFT JOIN locations l USING (location_id)
LEFT JOIN countries c USING (country_id)
LEFT JOIN regions r USING (region_id)
ORDER BY e.employee_id;
CREATE OR REPLACE FUNCTION pensje_dzisiaj() RETURNS void AS $$
DECLARE
pracownik employees%ROWTYPE;
BEGIN
FOR pracownik IN SELECT * FROM employees
LOOP
INSERT INTO salary_history(employee_id, salary, date)
VALUES (pracownik.employee_id, pracownik.salary, current_date);
END LOOP;
END
$$ LANGUAGE plpgsql;
CREATE OR REPLACE PROCEDURE przenies_pracownika(
emp_id employees.employee_id%TYPE,
dep_id employees.department_id%TYPE,
job_id employees.job_id%TYPE
) AS $$
DECLARE
stary employees%ROWTYPE;
data_poczatkowa DATE;
BEGIN
SELECT * FROM employees
WHERE employee_id = emp_id
INTO stary;
IF NOT FOUND THEN
RAISE EXCEPTION 'employee % not found', emp_id;
END IF;
SELECT max(end_date) FROM job_history
WHERE employee_id = emp_id
INTO data_poczatkowa;
IF data_poczatkowa IS NULL
THEN data_poczatkowa := stary.hire_date;
END IF;
INSERT INTO job_history(employee_id, start_date, end_date, job_id, department_id)
VALUES (emp_id, data_poczatkowa, current_date, stary.job_id, stary.department_id);
UPDATE employees SET
department_id = dep_id,
job_id = przenies_pracownika.job_id
WHERE employee_id = emp_id;
END
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION nazwisko_szefa(
emp_id INTEGER
) RETURNS VARCHAR AS $$
DECLARE
wynik VARCHAR;
BEGIN
SELECT first_name || ' ' || last_name
INTO wynik
FROM employees
WHERE employee_id = (SELECT manager_id FROM employees WHERE employee_id = emp_id);
RETURN wynik;
END
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION statystyki_departamentu(
dep_id IN INTEGER,
emp_count OUT INTEGER,
avg_salary OUT NUMERIC,
min_salary OUT NUMERIC,
max_salary OUT NUMERIC
) RETURNS record AS $$
BEGIN
SELECT count(employee_id), avg(salary), min(salary), max(salary)
INTO emp_count, avg_salary, min_salary, max_salary
FROM employees
WHERE department_id = dep_id;
END
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION zarabiajacy_wiecej_niz(emp_id INTEGER)
RETURNS SETOF employees AS $$
DECLARE
the_salary NUMERIC;
BEGIN
SELECT salary INTO the_salary FROM employees WHERE employee_id = emp_id;
RETURN QUERY
SELECT * FROM employees WHERE salary > the_salary ORDER BY salary ASC;
END
$$ LANGUAGE plpgsql;
hr-postgresql/9-hr-drop.sql 0 → 100644
DROP FUNCTION zarabiajacy_wiecej_niz;
DROP FUNCTION statystyki_departamentu;
DROP FUNCTION nazwisko_szefa;
DROP PROCEDURE przenies_pracownika;
DROP FUNCTION pensje_dzisiaj;
DROP INDEX emp_name_ix;
DROP INDEX emp_manager_ix;
DROP INDEX emp_job_ix;
DROP INDEX emp_department_ix;
DROP VIEW emp_details_view;
DROP VIEW szczegoly_pracownika;
DROP TABLE job_history;
DROP TABLE employees;
DROP TABLE jobs;
DROP TABLE departments;
DROP TABLE locations;
DROP TABLE countries;
DROP TABLE regions;
DROP SEQUENCE employees_seq;
DROP SEQUENCE departments_seq;
DROP SEQUENCE locations_seq;
hr-postgresql/wgraj_hr.bat 0 → 100644
set PG_HOME=C:\Program Files\PostgreSQL\16
set Path=%Path%;%PG_HOME%\bin
psql -h localhost -p 5432 -d postgres -U postgres -f 0-admin.sql
psql -h localhost -p 5432 -d hr -U alx -f wgraj_hr.sql
pause
hr-postgresql/wgraj_hr.sql 0 → 100644
SET client_encoding = 'UTF8';
\i 1-hr-create-tabele.sql
\i 2-hr-create-dodatki.sql
\i 3-hr-insert.sql
\i 4-hr-moje-dodatki.sql
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