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ESERCIZIO PL/SQL e PSP

ESERCIZIO PL/SQL e PSP. LO SCHEMA. create table studenti ( nome VARCHAR2(15) not null, cognome VARCHAR2(15) not null, eta NUMBER );. COPIATE I FILES. Copiate i files da \homeserverghellibdl08eserciziesepsp

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ESERCIZIO PL/SQL e PSP

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  1. ESERCIZIO PL/SQL e PSP

  2. LO SCHEMA create table studenti ( nome VARCHAR2(15) not null, cognome VARCHAR2(15) not null, eta NUMBER );

  3. COPIATE I FILES • Copiate i files da \\homeserver\ghelli\bdl08\esercizi\esepsp • oppure da http://www.di.unipi.it/~ghelli/didattica/bdl08/esercizi/esepsp/

  4. CREATE LO SCHEMA • Caricate: • createtable.sql • Risposta: drop table studenti * ERRORE alla riga 1: ORA-00942: table or view does not exist Creata tabella. Creata 1 riga....

  5. Voglio creare la pagina: • <html><head><title>Mostrastudenti</title></head> <body> <h1>Elenco studenti </h1> <table><tr> <td> <i> Cognome </i> </td><td> <i>Nome </i> </td> </tr><tr> <td>Carto</td> <td> Lina</td> </tr><tr> <td>Mando</td> <td> Lino</td> </tr><tr> <td> Aspi</td> <td>Rina</td> </tr><tr> <td>Compi</td> <td>Tino</td> </tr></table></body> </html>

  6. Ecco il codice PL/SQL create or replace PROCEDURE provapl AS beginhtp.prn('<HTML> <HEAD><TITLE>Mostrastudenti</TITLE></HEAD> <BODY><H1>Elenco studenti </H1> <TABLE> <TR> <TD> <I>Cognome</I></TD><TD> <I>Nome </I> </TD> </TR>');for studente in (select nome, cognome from studenti) loop htp.prn('<TR> <TD>' ||studente.cognome);htp.prn('</TD> <TD>' ||studente.nome);htp.prn('</TD> </TR>');end loop;htp.prn('</TABLE> </BODY> </HTML>');end;

  7. Compilate provapl.sql • Compilate provapl.sql • Test: • //oracle1.cli.di.unipi.it/pls/user.provapl

  8. PASSARE UN PARAMETRO create or replace PROCEDURE provaparpl ( ilCognome IN VARCHAR2) AS beginhtp.prn(' <HTML> <HEAD../HEAD> <BODY><H1>Elenco studenti </H1> <TABLE> <TR> <TD> <I>Cognome</I></TD><TD> <I>Nome </I> </TD> </TR> '); for studente in (select nome, cognome from studenti s where s.Cognome = ilCognome) loop htp.prn(' <TR> <TD> ‘ || studente.cognome );htp.prn(' </TD> <TD> ‘ ||studente.nome );htp.prn(' </TD> </TR> ');end loop;htp.prn(' </TABLE> </BODY> </HTML> ');end;

  9. Compilate provaparpl.sql • Compilate provaparpl.sql • Test: //oracle1.cli.di.unipi.it/pls/user.provaparpl Errore //or.../pls/user.provaparpl?ilCognome=Mando Successo //.../pls/user.provaparpl?ilCognome=ghelli Tabella vuota

  10. Un modo più semplice: con un editore html: <HTML><HEAD><TITLE>Mostra studenti</TITLE></HEAD> <BODY><H1>Elenco studenti </H1> <TABLE> <TR><TD> <I><font size=+1> Cognome </font></I> </TD> <TD> <I><font size=+1> Nome </font></I> </TD></TR> <TR> <TD> Mario </TD> <TD> Rossi </TD> </TR> <TR> <TD> Luigi </TD> <TD> Bianchi </TD> </TR> </TABLE></BODY></HTML>

  11. Poi, modificate come segue <%@ page language="PL/SQL" %> <HTML><HEAD><TITLE>Mostra studenti</TITLE></HEAD> <BODY><H1>Elenco studenti </H1> <TABLE> <TR><TD> <I><font size=+1> Cognome </font></I> </TD> <TD> <I><font size=+1> Nome </font></I> </TD></TR> <% for studente in (select nome, cognome from studenti) loop %> <TR> <TD> <%= studente.cognome %> </TD> <TD> <%= studente.nome %> </TD> </TR> <% end loop; %> </TABLE></BODY></HTML>

  12. COMPILATE provapsp.psp • Guardate provapsp.psp • Compilatelo da una command shell (run: cmd, oppure accessoriescommand prompt) • cd C:\...\esepsp • loadpsp –replace –useruser/pwd@oracle1.cli.di.unipi.it/oracle1provapsp.psp • "provapsp.psp": procedure "..." created. • Test: • oracle1.cli.di.unipi.it/pls/user.provapsp • Verifica: • dentro sqlplus worksheet scrivete: • describe provapsp • il sistema risponde: • PROCEDURE provapsp

  13. IL FILE GENERATO create or replace PROCEDURE provapsp AS BEGIN NULL;htp.prn(' <HTML> <HEAD><TITLE>Mostra studenti</TITLE></HEAD> <BODY> <H1>Elenco studenti </H1><TABLE> <TR> <TD> <I><font size=+1> Cognome </font></I> </TD> <TD> <I><font size=+1> Nome </font></I> </TD> </TR> ');for studente in(select nome, cognome from studenti)loophtp.prn(' <TR> <TD> '); htp.prn(studente.cognome); htp.prn(' </TD> <TD> '); htp.prn(studente.nome); htp.prn(' </TD> </TR> ');end loop;htp.prn(' </TABLE> </BODY> </HTML> ');END;

  14. PARAMETRO PSP <%@ page language="PL/SQL" %> <%@ plsql parameter="ilCognome" %> <HTML><HEAD><TITLE>Mostra studenti</TITLE></HEAD> <BODY><H1>Elenco studenti </H1> <TABLE> <TR> <TD> <I> …</I> </TD> </TR> <% for studente in (select nome, cognome from studenti s where (ilCognome is null or s.Cognome like ilCognome)) loop %> <TR> <TD>…</TD> </TR> <% end loop; %> </TABLE></BODY></HTML>

  15. COMPILATE provaparpsp.psp • Guardate provaparpsp.psp • Aprite provaparpsp.psp con Notepad o Wordpad • Compilatelo • loadpsp –replace –useruser/pwd@oracle1.cli.di.unipi.it/oracle1 file.psp • “....psp": procedure "..." created.

  16. TEST • //oracle1.cli.di.unipi.it/pls/user.provaparpsp • Errore • //or.../pls/user.provaparpsp?ilCognome=Mando • Successo • //.../pls/user.provaparpsp?ilCognome= • Mostra il contenuto della tabella

  17. ESERCIZI • Modificate le procedure per mostrare anche l’età • Costruire una pagina parametrica che, ricevuto in input ‘nomeProc’, visualizzi in una tabella il risultato della query: SELECT Line, Text FROM User_source WHERE Name = nomeProc

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