Esta vez nos gustaría conseguir todas las películas que se lanzaron en el año 1960 o más recientemente y para cada película obtener información adicional, como el año, título, director, los medios utilizados y boletos vendidos. El resultado debe ordenarse por año.
- Utilizando código SQL:
ARRAY LONGINT(aNrActors;0)
ARRAY LONGINT(aSoldTickets;0)
ARRAY INTEGER(aMovieYear;0)
ARRAY TEXT(aTitles;0)
ARRAY TEXT(aDirectors;0)
ARRAY TEXT(aMedias;0)
C_LONGINT($MovieYear)
REDUCE SELECTION([MOVIES];0)
$MovieYear:=1960
Begin SQL
SELECT Year_of_Movie, Title, Director, Media, Sold_Tickets
FROM MOVIES
WHERE Year_of_Movie >= :$MovieYear
ORDER BY 1
INTO :aMovieYear, :aTitles, :aDirectors, :aMedias, :aSoldTickets;
End SQL
- Utilizando comandos SQL genéricos:
C_TEXT($tQueryTxt)
ARRAY LONGINT(aNrActors;0)
ARRAY LONGINT(aSoldTickets;0)
ARRAY INTEGER(aMovieYear;0)
ARRAY TEXT(aTitles;0)
ARRAY TEXT(aDirectors;0)
ARRAY TEXT(aMedias;0)
C_LONGINT($MovieYear)
REDUCE SELECTION([MOVIES];0)
$MovieYear:=1960
SQL LOGIN(SQL_INTERNAL;"";"")
$tQueryTxt:=""
$tQueryTxt:=$tQueryTxt+"SELECT Year_of_Movie, Title, Director, Media, Sold_Tickets"
$tQueryTxt:=$tQueryTxt+" FROM MOVIES"
$tQueryTxt:=$tQueryTxt+" WHERE Year_of_Movie >= :$MovieYear"
$tQueryTxt:=$tQueryTxt+" ORDER BY 1"
SQL EXECUTE($tQueryTxt;aMovieYear;aTitles;aDirectors;aMedias;aSoldTickets)
SQL LOAD RECORD(SQL all records)
SQL LOGOUT
- Utilizando el comando QUERY BY SQL:
ARRAY LONGINT(aNrActors;0)
ARRAY LONGINT(aSoldTickets;0)
ARRAY INTEGER(aMovieYear;0)
ARRAY TEXT(aTitles;0)
ARRAY TEXT(aDirectors;0)
ARRAY TEXT(aMedias;0)
C_LONGINT($MovieYear)
REDUCE SELECTION([MOVIES];0)
$MovieYear:=1960
QUERY BY SQL([MOVIES];"Year_of_Movie >= :$MovieYear")
SELECTION TO ARRAY([MOVIES]Year_of_Movie;aMovieYear;[MOVIES]Title;aTitles;[MOVIES]Director;aDirectors;
[MOVIES]Media;aMedias;[MOVIES]Sold_Tickets;aSoldTickets)
SORT ARRAY(aMovieYear;aTitles;aDirectors;aMedias;>)
- Utilizando el comando SQL EXECUTE IMMEDIATE:
ARRAY LONGINT(aNrActors;0)
C_TEXT($tQueryTxt)
ARRAY LONGINT(aSoldTickets;0)
ARRAY INTEGER(aMovieYear;0)
ARRAY TEXT(aTitles;0)
ARRAY TEXT(aDirectors;0)
ARRAY TEXT(aMedias;0)
C_LONGINT($MovieYear)
REDUCE SELECTION([MOVIES];0)
$MovieYear:=1960
$tQueryTxt:=""
$tQueryTxt:=$tQueryTxt+"SELECT Year_of_Movie, Title, Director, Media, Sold_Tickets"
$tQueryTxt:=$tQueryTxt+" FROM MOVIES"
$tQueryTxt:=$tQueryTxt+" WHERE Year_of_Movie >= :$MovieYear"
$tQueryTxt:=$tQueryTxt+" ORDER BY 1"
$tQueryTxt:=$tQueryTxt+" INTO :aMovieYear, :aTitles, :aDirectors, :aMedias, :aSoldTickets;"
Begin SQL
EXECUTE IMMEDIATE :$tQueryTxt;
End SQL
Para probar todos los ejemplos anteriores, lance la base "4D SQL Code Samples" y vaya a la ventana principal. A continuación, puede elegir el modo de búsqueda y presionar el botón ORDER BY clause.