Beginning SQL

For example, you might want a list of all the members who did not attend a specific meeting, with their
email addresses so that you could send an email outlining what you did at that meeting and inviting
them to attend the next meeting.
SELECT LastName, FirstName, Email, MeetingDate, MemberAttended
FROM MemberAttendance
WHERE (MemberAttended = ‘N’) AND (MeetingDate = CONVERT(DATETIME, ‘2004-01-01’,
102))
Executing this SELECT statement provides the results shown in Figure 10-5.
Figure 10-5
Or perhaps you need the names and birth dates of members who have attended any meeting so that you
can invite active members to a birthday bash to thank them for their participation.
SELECT DISTINCT LastName, FirstName, Email
FROM MemberAttendance
WHERE (MemberAttended = ‘Y’)
Figure 10-6 displays the results of this query.
Figure 10-6
As you can see, windowed queries are trivial to build when you have a good base view to work with.
Summary Views
Finally, you might wish to perform data analysis, perhaps determining the most (or least) active
members.
SELECT COUNT(MemberAttended) AS CntOfAttendance, FirstName, LastName
FROM Attendance INNER JOIN
MemberDetails ON Attendance.MemberId = MemberDetails.MemberId
WHERE (MemberAttended = ‘Y’)
GROUP BY FirstName, LastName
Executing this statement gives you the results depicted in Figure 10-7.
Views
293