Question
In the HOUSE table there is an Insurance attribute. This would be either a yes or no entry. In the HEATINGUNIT table there is a
In the HOUSE table there is an Insurance attribute. This would be either a yes or no entry. In the HEATINGUNIT table there is a DateOfBuilt attribute, you can format this as the year only, for example 2019, 1996, 2001, etc. Create a query that shows all the house addresses that have no insurance and the DateOfBuilt for those heating units. Order the list from oldest to newest.
CREATE TABLE HOUSE (HouseAddress CHAR(50), HouseOwner CHAR(30), Insurance CHAR(40));
INSERT INTO HOUSE VALUES ('285 Westport Rd', 'lem', 'Yes'), ('213 Longboard Ln', 'jude', 'Yes'), ('321 Surf Rd', 'jaden', 'No');
CREATE TABLE HEATINGUNIT (HeatingUnitID INT, UnitName CHAR(30), UnitType CHAR(40), Manufactory CHAR(40), DateOfBuilt Date, Capacity INT, HouseAddress CHAR(50)); INSERT INTO HEATINGUNIT VALUES (4, 'Large', 'Solar', 'GE', NULL, 3000, '213 Longboard Lne'), (3, 'Small', 'Electric', 'GE', NULL, 6000, '213 Longboard Ln'), (1, 'Small', 'Gas', 'LG', NULL, 2000, '285 Westport Rd'), (2, 'Large', 'Solar', 'GE', NULL, 3500, '285 Westport Rd'), (6, 'Medium', 'Hybrid', 'LG', NULL, 3000, '321 Surf Rd'), (5, 'Medium', 'Hybrid', 'LG', NULL, 2000, '321 Surf Rd');
CREATE TABLE TECHNICIAN (EmployeeNumber INT, EmployeeName CHAR(30), Title CHAR(40), YearHired INT); INSERT INTO TECHNICIAN VALUES (1, 'John', 'Tech1', 2004), (2, 'Jordan', 'Tech2', 2006), (3, 'JohnAllen', 'Supervisor', 2015);
CREATE TABLE SERVICE (HeatingUnitID INT, ServiceType CHAR(40), Date Date, Time TimeSTAMP, EmployeeNumber INT);
INSERT INTO SERVICE VALUES (1, 'Repair', NULL, NULL, 1), (2, 'Repair', NULL, NULL, 2), (3, 'Maintenance', NULL, NULL, 2), (4, 'Maintenance', NULL, NULL, 2);
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