Inserting foreign key into SQL table - sql

Question

With the tables below, I am trying to answer this question and I have no idea how to answer it:
"Show the sum of HoursWorked for each Type of OWNER but exclude services of employees who have ExperienceLevel of Junior and exclude any Type with less than three members."
CREATE TABLE OWNER
(
OwnerID Int NOT NULL IDENTITY (1,1) PRIMARY KEY,
OwnerName Char(30) NOT NULL,
OwnerEmail VarChar(100) NULL,
OwnerType Char(15) NOT NULL,
);
CREATE TABLE PROPERTY
(
PropertyID Int NOT NULL IDENTITY(1,1) PRIMARY KEY,
PropertyName Char(30) NOT NULL,
Street Char(20) NOT NULL,
City Char(25) NOT NULL,
State Char(10) NOT NULL,
Zip Char(5) NOT NULL,
OwnerID Int NOT NULL,
CONSTRAINT PROP_OWN_FK FOREIGN KEY(OwnerID)
REFERENCES OWNER(OwnerID),
);
CREATE TABLE GG_EMPLOYEE
(
EmployeeID Int NOT NULL IDENTITY(1,1) PRIMARY KEY,
LastName Char(35) NOT NULL,
FirstName Char(35) NOT NULL,
CellPhone Char(20) NOT NULL,
ExperienceLevel Char(25) NOT NULL,
);
CREATE TABLE SERVICE
(
PropertyID Int NOT NULL,
EmployeeID Int NOT NULL,
ServiceDate Char(15) NOT NULL,
HoursWorked Char(5) NOT NULL,
CONSTRAINT SERVICE_PK PRIMARY KEY(PropertyID, EmployeeID, ServiceDate),
CONSTRAINT SER_PRO_FK FOREIGN KEY(PropertyID)
REFERENCES PROPERTY(PropertyID),
CONSTRAINT SER_GG_EMP_FK FOREIGN KEY(EmployeeID)
REFERENCES GG_EMPLOYEE(EmployeeID),
);
INSERT INTO OWNER
VALUES ('Mary Jones', 'Mary.Jones#somewhere.com', 'Individual');
INSERT INTO OWNER
VALUES('DT Enterprises', 'DTE#dte.com', 'Corporation');
INSERT INTO OWNER
VALUES('Sam Douglas', NULL, 'Individual');
INSERT INTO OWNER
VALUES('UNY Enterprises', 'UNYE#unye.com', 'Corporation');
INSERT INTO OWNER
VALUES('Doug Samuels', 'Doug.Samuels#somewhere.com', 'Individual');
INSERT INTO PROPERTY
VALUES('Eastlake Building', '123 Eastlake', 'Seattle', 'WA', '98119');
INSERT INTO PROPERTY
VALUES('Elm St Apts', '4 East Elm', 'Lynwood', 'WA', '98223');
INSERT INTO PROPERTY
VALUES('Jefferson Hill', '42 West 7th St', 'Bellevue', 'WA', '98007');
INSERT INTO PROPERTY
VALUES('Lake View Apts', '1265 32nd Avenue', 'Redmond', 'WA', '98054');
INSERT INTO PROPERTY
VALUES('Kodak Heights Apts', '65 32nd Avenue', 'Rochester', 'NY', '14604');
INSERT INTO PROPERTY
VALUES('Private Residence', '1456 48th St', 'Bellevue', 'WA', '98007');
INSERT INTO PROPERTY
VALUES('Private Residence', '1567 51st St', 'Bellevue', 'WA', '98007');
INSERT INTO PROPERTY
VALUES('Private Residence', '718 151st St', 'Rochester', 'NY', '14604');
INSERT INTO GG_EMPLOYEE
VALUES('Smith', 'Sam', '206-254-1234', 'Master');
INSERT INTO GG_EMPLOYEE
VALUES('Evanston', 'John', '206-254-2345', 'Senior');
INSERT INTO GG_EMPLOYEE
VALUES('Murray', 'Dale', '206-254-3456', 'Junior');
INSERT INTO GG_EMPLOYEE
VALUES('Murphy', 'Jerry', '585-545-8765', 'Master');
INSERT INTO GG_EMPLOYEE
VALUES('Fontaine', 'Joan', '206-254-4567', 'Senior');
INSERT INTO SERVICE VALUES('2015-05-05', '4.50');
INSERT INTO SERVICE VALUES('2015-05-08', '2.75');
INSERT INTO SERVICE VALUES('2015-05-08', '4.50');
INSERT INTO SERVICE VALUES('2015-05-19', '3.00');
INSERT INTO SERVICE VALUES('2015-05-12', '7.50');
INSERT INTO SERVICE VALUES('2015-05-10', '2.50');
INSERT INTO SERVICE VALUES('2015-05-19', '2.50');
INSERT INTO SERVICE VALUES('2015-05-15', '2.75');
If someone could please help me, that would be great!

Answer 1

Columns OwnerID in Property Table and PropertyId and EmployeeID in Service table are making trouble for you.
Following are the reason for that.
1) All the mentioned columns are set as NOT NULL. So these column
always expect value for every insert.
2) Also,In 'service' table ,columns PropertyId and EmployeeID are
part of composite primary key. Primary key doesn't allow NULL values.
3)Once you handle the points 1 and 2,You can make the insert by
mentioning columns in your INSERT query,like below
INSERT INTO PROPERTY (PropertyName,Street,City,[State],Zip)
VALUES('Eastlake Building', '123 Eastlake', 'Seattle', 'WA', '98119');
INSERT INTO [SERVICE] (ServiceDate,HoursWorked)
VALUES('2015-05-05', '4.50');

Answer 2

http://sqlfiddle.com/#!6/3ea54
You need to say who is the owner, the insert doesnt know that.
here I assing every property to owner = 1
INSERT INTO PROPERTY VALUES('Eastlake Building', '123 Eastlake', 'Seattle', 'WA', '98119', 1);
INSERT INTO PROPERTY VALUES('Elm St Apts', '4 East Elm', 'Lynwood', 'WA', '98223', 1 );
INSERT INTO PROPERTY VALUES('Jefferson Hill', '42 West 7th St', 'Bellevue', 'WA', '98007', 1);
INSERT INTO PROPERTY VALUES('Lake View Apts', '1265 32nd Avenue', 'Redmond', 'WA', '98054', 1);
INSERT INTO PROPERTY VALUES('Kodak Heights Apts', '65 32nd Avenue', 'Rochester', 'NY', '14604', 1);
INSERT INTO PROPERTY VALUES('Private Residence', '1456 48th St', 'Bellevue', 'WA', '98007', 1);
INSERT INTO PROPERTY VALUES('Private Residence', '1567 51st St', 'Bellevue', 'WA', '98007', 1);
INSERT INTO PROPERTY VALUES('Private Residence', '718 151st St', 'Rochester', 'NY', '14604', 1);

Answer 3

hey luke problem is that in insert query values count is not matching with column count of tables.
if u want to use advantage of Auto increment property write insert query with column names.
and column 'OwnerID' in PROPERTY table and 'EmployeeID' in SERVICE table can not be null as you restricted in table creation.