SQL Queries/Subqueries - sql

Question

I was wondering if someone could help me with this query? I am very stuck on this one:
"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),
);

Answer 1

SELECT o.OwnerType, SUM(Cast(HoursWorked as INT)) Sum_HrsWorked
FROM SERVICE s
INNER JOIN GG_EMPLOYEE e
ON s.EmployeeId = e.EmployeeId
INNER JOIN PROPERTY p
ON s.PropertyId = p.PropertyId
INNER JOIN OWNER o
ON o.OwnerID = p.OwnerID
WHERE e.ExperienceLevel <> 'JUNIOR'
Group By o.OwnerType
HAVING COUNT(OwnerType) > 3

Answer 2

Select Tbl1.OwnerName,Sum(TBl2.TTLHoursWorked) as TTLHoursWorked
From
(
Select TBl1.OwnerID,Tbl1.OwnerName,Tbl2.PropertyID,Tbl2.PropertyName
From Owner Tbl1
Inner Join
PROPERTY Tbl2
On Tbl1.OwnerID=Tbl2.OwnerID
)Tbl1
Inner Join
(
Select Tbl2.PropertyID,Cast(HoursWorked as numeric(5,4)) as TTLHoursWorked
From (Select * From GG_EMPLOYEE Where ExperienceLevel in(Select ExperienceLevel
From GG_EMPLOYEE
Where ExperienceLevel<>'Junior'
Group by ExperienceLevel Having Count(*)>3))as Tbl1
Inner Join SERVICE as Tbl2
On Tbl1.EmployeeID=Tbl2.EmployeeID
)Tbl2
On Tbl1.PropertyID=Tbl2.PropertyID
Group by Tbl1.OwnerName

Answer 3

SELECT o.OwnerType, SUM(CAST(s.HoursWorked as INT))
FROM
owner o
INNER JOIN property p
On o.ownerid = p.ownerid
INNER JOIN service s
ON p.propertyid = s.propertyid
INNER JOIN GG_employee e
On s.employeeid = e.employeeid
And e.experiencelevel <> 'junior'
GROUP BY
O.ownertype
HAVING
COUNT(DISTINCT o.ownerid) >= 3
Please forgive typos and capitalization as I'm on my phone.