Beginning SQL

The final condition required is a check to see if the film is available on DVD. Again, the compulsory condition
is matched. If you want the right answer to the question, an AND statement must be used. This
condition is fairly simple, just a check if the AvailableOnDVD column contains a single character Y:
WHERE ( YearReleased BETWEEN 1980 AND 1989 )
AND
( Rating BETWEEN 2 AND 4 )
AND
AvailableOnDVD = ‘Y’
Putting it all together, you have the following SQL:
SELECT FilmName, YearReleased, Rating, AvailableOnDVD
FROM Films
WHERE ( YearReleased BETWEEN 1980 AND 1989 )
AND
( Rating BETWEEN 2 AND 4 )
AND
( AvailableOnDVD = ‘Y’ )
Execute the SQL and the result is just one record:
FilmName YearReleased Rating AvailableOnDVD
Gone with the Window Cleaner 1988 3 Y
The SELECT clause of the second query is also quite straightforward. It simply asks the database system
to retrieve records from the FilmName column of the Films table:
SELECT FilmName FROM Films
The query’s first condition requires that the film must not have been released in the 1960s, or to rephrase
it, the film’s year of release must not be between 1960 and 1969. This condition requires a BETWEEN
operator:
WHERE ( YearReleased NOT BETWEEN 1960 AND 1969 )
The next condition requires that film’s name must begin with a letter in the range of P to T:
WHERE ( YearReleased NOT BETWEEN 1960 AND 1969 )
AND
( FilmName BETWEEN ‘P’ AND ‘T’ )
Putting it all together provides the following SQL:
SELECT FilmName
FROM Films
WHERE ( YearReleased NOT BETWEEN 1960 AND 1969 )
AND
( FilmName BETWEEN ‘P’ AND ‘T’ )
Extracting Information
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