Beginning SQL

Chapter 7
232
On Golden Puddle 1967
One Flew over the Crow’s Nest 1975
Orange Town NULL
Planet of the Japes 1967
Raging Bullocks 1980
Sense and Insensitivity 2001
Simons 1937
Smith 1977
Soylent Yellow 1967
The Dirty Half Dozen 1987
The Good, the Bad, and the Facially Challenged 1989
The Life of Bob 1984
The Lion, the Witch, and the Chest of Drawers 1977
The Maltese Poodle 1947
The Wide-Brimmed Hat 2005
Windy Village NULL
The results are a combination of the three individual SELECT statements. The first statement is as follows:
SELECT FilmName, YearReleased FROM Films
It produces a list of film names and years of release. The second SELECT statement is shown here:
SELECT LastName, YEAR(DateOfBirth) FROM MemberDetails
This statement produces a list of members’ last names and years of birth. The third and final statement is
as follows:
SELECT City, NULL FROM Location
This particular statement produces a list of city names, and in the second column, it simply produces the
value NULL.
That completes the look at the UNION operator, and you should know how to produce one single set of
results based on the results of more than one query. While the UNION operator is in some ways similar to
joins, the biggest difference is that each query is totally separate; there’s no link between them.