path: root/sql/upgrade/1.2-1.3.sql

BEGIN;

ALTER TABLE employee RENAME TO employees;

CREATE TABLE locations ( 
    id SERIAL PRIMARY KEY,
    companyname text,
    address1 text,
    address2 text,
    city text,
    state text,
    country text,
    zipcode text
);  

CREATE SEQUENCE employees_id_seq;
SELECT setval('employees_id_seq', (select max(id) + 1 FROM employees));

ALTER TABLE employees ADD COLUMN locations_id integer;
ALTER TABLE employees ADD FOREIGN KEY (locations_id) REFERENCES locations(id);
ALTER TABLE employees ALTER COLUMN id DROP DEFAULT;
ALTER TABLE employees ALTER COLUMN id SET DEFAULT  nextval('employee_id_seq');

DROP RULE employee_id_track_i ON employees; -- no longer needed

CREATE OR REPLACE FUNCTION location_save
(in_id int, in_companyname text, in_address1 text, in_address2 text, 
    in_city text, in_state text, in_zipcode text, in_country text) 
returns integer AS
$$
DECLARE
    location_id integer;
BEGIN
    UPDATE locations
    SET companyname = in_companyname,
        address1 = in_address1,
        address2 = in_address2,
        city = in_city,
        state = in_state,
        zipcode = in_zipcode,
        country = in_country
    WHERE id = in_id;
    IF FOUND THEN
        return in_id;
    END IF;
    INSERT INTO location 
    (companyname, address1, address2, city, state, zipcode, country)
    VALUES
    (in_companyname, in_address1, in_address2, in_city, in_state,
        in_zipcode, in_country);
    SELECT lastval('location_id_seq') INTO location_id;
    return location_id;
END;
$$ LANGUAGE PLPGSQL;

create or replace function employee_save
(in_id integer, in_location_id integer, in_employeenumber varchar(32), 
    in_name varchar(64), in_address1 varchar(32), in_address2 varchar(32),
    in_city varchar(32), in_state varchar(32), in_zipcode varchar(10),
    in_country varchar(32), in_workphone varchar(20), 
    in_homephone varchar(20), in_startdate date, in_enddate date, 
    in_notes text, in_role varchar(20), in_sales boolean, in_email text, 
    in_ssn varchar(20), in_dob date, in_iban varchar(34), 
    in_bic varchar(11), in_managerid integer) returns int
AS
$$
BEGIN
    UPDATE employees
    SET location_id = in_location_id,
        employeenumber = in_employeenumber,
        name = in_name,
        address1 = in_address1,
        address2 = in_address2,
        city = in_city,
        state = in_state,
        zipcode = in_zipcode,
        country = in_country,
        workphone = in_workphone,
        homephone = in_homephone,
        startdate = in_startdate,
        enddate = in_enddate,
        notes = in_notes,
        role = in_role,
        sales = in_sales,
        email = in_email,
        ssn = in_ssn,
        dob=in_dob,
        iban = in_iban, 
        bic = in_bic, 
        manager_id = in_managerid
    WHERE id = in_id;

    IF FOUND THEN
        return in_id;
    END IF;
    INSERT INTO employees
    (location_id, employeenumber, name, address1, address2, 
        city, state, zipcode, country, workphone, homephone,
        startdate, enddate, notes, role, sales, email, ssn,
        dob, iban, bic, managerid)
    VALUES
    (in_location_id, in_employeenumber, in_name, in_address1,
        in_address2, in_city, in_state, in_zipcode, in_country,
        in_workphone, in_homephone, in_startdate, in_enddate,
        in_notes, in_role, in_sales, in_email, in_ssn, in_dob,
        in_iban, in_bic, in_managerid);
    SELECT currval('employee_id_seq') INTO employee_id;
    return employee_id;
END;
$$ LANGUAGE PLPGSQL;

CREATE OR REPLACE FUNCTION employee_get
(in_id integer)
returns employees as
$$
DECLARE
    emp employees%ROWTYPE;
BEGIN
    SELECT * INTO emp FROM employees WHERE id = in_id;
    RETURN emp;
END;
$$ language plpgsql;

CREATE OR REPLACE FUNCTION employee_list_managers
(in_id integer)
RETURNS SETOF employees as
$$
DECLARE
    emp employees%ROWTYPE;
BEGIN
    FOR emp IN 
        SELECT * FROM employees 
        WHERE sales = '1' AND role='manager'
            AND id <> coalesce(in_id, -1)
        ORDER BY name
    LOOP
        RETURN NEXT emp;
    END LOOP;
END;
$$ language plpgsql;

CREATE OR REPLACE FUNCTION employee_delete
(in_id integer) returns void as
$$
BEGIN
    DELETE FROM employees WHERE id = in_id;
    RETURN;
END;
$$ language plpgsql;

-- as long as we need the datatype, might as well get some other use out of it!
CREATE OR REPLACE VIEW employee_search AS
SELECT e.*, m.name AS manager 
FROM employees e JOIN employees m ON (e.managerid = m.id);

CREATE OR REPLACE FUNCTION employee_search
(in_startdatefrom date, in_startdateto date, in_name varchar, in_notes text,
    in_enddateto date, in_enddatefrom date)
RETURNS SETOF employee_search AS
$$
DECLARE
    emp employee_search%ROWTYPE;
BEGIN
    FOR emp IN
        SELECT * FROM employee_search
        WHERE coalesce(startdate, 'infinity'::timestamp)
            >= coalesce(in_startdateto, '-infinity'::timestamp)
            AND coalesce(startdate, '-infinity'::timestamp) <=
                coalesce(in_startdatefrom, 
                        'infinity'::timestamp)
            AND coalesce(enddate, '-infinity'::timestamp) <= 
                coalesce(in_enddateto, 'infinity'::timestamp)
            AND coalesce(enddate, 'infinity'::timestamp) >= 
                coalesce(in_enddatefrom, '-infinity'::timestamp)
            AND lower(name) LIKE '%' || lower(in_name) || '%'
            AND lower(notes) LIKE '%' || lower(in_notes) || '%'
            AND (sales = 't' OR coalesce(in_sales, 'f') = 'f')
    LOOP
        RETURN NEXT emp;
    END LOOP;
END;
$$ language plpgsql;

COMMIT;