Beginning SQL

LastName FirstName DateOfBirth
Night Doris 1997-05-28
Simons Susie 1937-01-20
Smith Katie 1977-01-09
To filter the results to include only members who joined in 2005, simply add a WHERE clause before the
ORDER BY clause. Using a BETWEEN clause is the easiest way to include only dates in 2005. Currently the
database contains only dates in 2004 and 2005, so it might be tempting to filter all dates with a >= 2005
operator, but if you add data later that includes 2006 dates and beyond, the SQL would no longer return
valid results. With the WHERE clause added, the SQL is now as follows:
SELECT LastName, FirstName, DateOfBirth
FROM MemberDetails
WHERE DateOfJoining BETWEEN ‘2005-01-01’ AND ‘2005-12-31’
ORDER BY LastName, DateOfBirth, FirstName;
Remember that Oracle’s date format is day-month-year. Also remember that MS Access needs the hash
sign (#) rather than single quotes around the dates.
When executed, the preceding SQL provides these results:
LastName FirstName DateOfBirth
Botts Seymour 1956-10-21
Dales Stuart 1956-08-07
Doors William 1994-05-28
Hills Jamie 1992-07-17
Jackson John 1974-05-27
Johnson Jack 1945-06-09
Jones John 1952-10-05
Jones Jenny 1953-08-25
Night Doris 1997-05-28
Simons Susie 1937-01-20
Previously, results have appeared in ascending order, which is the ORDER BY clause’s default order. This
time, however, you want results to appear in descending order, so you must add DESC at the end of the
ORDER BY clause’s list of columns:
SELECT LastName, FirstName, DateOfBirth
FROM MemberDetails
ORDER BY DateOfBirth DESC;
Extracting Information
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