1. Perl and MySQL Using apache server with perl cgi Using MySQL Need to install dbi and dbd modules to your perl installation. There are some good examples on this site: http://www.tutorialspoint.com/perl/perl_cgi. htm http://www.tutorialspoint.com/perl/perl_cgi. htm

2. Using perl with mysql If you are using ActivePerl, you may use ppm to install DBD-mysql. For Perl 5.6, upgrade to Build 623 or later, then it is sufficient to run C:\perl>ppm install DBI C:\perl>ppm install DBD::mysql If you need an HTTP proxy, you might need to set the environment variable http_proxy, for example like this: set http_proxy=http://myproxy.com:8080/http://myproxy.com:8080/ As of this writing, DBD::mysql is missing in the ActivePerl 5.8.0 repository. However, Randy Kobes has kindly donated an own distribution and the following might succeed: C:\>ppm install http://theoryx5.uwinnipeg.ca/ppms/DBD- mysql.ppdhttp://theoryx5.uwinnipeg.ca/ppms/DBD- mysql.ppd

3. Perl and db queries Using apache server with perl cgi Using MySQL Need to install dbi and dbd modules to your perl installation. See next slide screen shot for C:\perl>ppm install dbi

4. C:\perl>ppm install DBI

5. Installing dbd:mysql (not in perl5.8) c;:\>ppm install http://theoryx5.uwinnipeg.ca/ppms/DBD- mysql.ppd http://theoryx5.uwinnipeg.ca/ppms/DBD- mysql.ppd

6. Using perl with mysql If you are using ActivePerl, you may use ppm to install DBD-mysql. For Perl 5.6, upgrade to Build 623 or later, then it is sufficient to run C:\perl>ppm install DBI C:\perl>ppm install DBD::mysql If you need an HTTP proxy, you might need to set the environment variable http_proxy, for example like this: set http_proxy=http://myproxy.com:8080/http://myproxy.com:8080/ As of this writing, DBD::mysql is missing in the ActivePerl 5.8.0 repository. However, Randy Kobes has kindly donated an own distribution and the following might succeed: C:\>ppm install http://theoryx5.uwinnipeg.ca/ppms/DBD- mysql.ppdhttp://theoryx5.uwinnipeg.ca/ppms/DBD- mysql.ppd

7. You’ll need a table in some mysql database

8. Using mysql You’ll need a network connection for this install Create a command prompt in perl/bin and run the ppm (program package manager) Type –Install DBI

9. Using mysql: DOS window –lots of stuff installed C:\PERL\BIN>ppm PPM - Programmer's Package Manager version 3.2. Copyright (c) 2001 ActiveState Corp. All Rights Reserved. ActiveState is a division of Sophos. Entering interactive shell. Using Term::ReadLine::Perl as readline library. Type 'help' to get started. ppm> install DBI ==================== Install 'DBI' version 1.50 in ActivePerl 5.8.7.813. ==================== Downloaded 558143 bytes. Extracting 73/73: blib/arch/auto/DBI/Driver_xst.h Installing C:\Perl\site\lib\auto\DBI\dbd_xsh.h Installing C:\Perl\site\lib\auto\DBI\DBI.bs Installing C:\Perl\site\lib\auto\DBI\DBI.dll Installing C:\Perl\site\lib\auto\DBI\DBI.exp Installing C:\Perl\site\lib\auto\DBI\dbi_sql.h Installing C:\Perl\site\lib\auto\DBI\Driver.xst Installing C:\Perl\site\lib\auto\DBI\Driver_xst.h Installing C:\Perl\site\lib\DBI\ProfileDumper\Apache.pm Installing C:\Perl\site\lib\DBI\SQL\Nano.pm Installing C:\Perl\site\lib\Win32\DBIODBC.pm Installing C:\Perl\bin\dbiprof Installing C:\Perl\bin\dbiprof.bat Installing C:\Perl\bin\dbiproxy Installing C:\Perl\bin\dbiproxy.bat Successfully installed DBI version 1.50 in ActivePerl 5.8.7.813. ppm> exit C:\PERL\BIN>

10. Install mysql connector from ppm ppm> install http://theoryx5.uwinnipeg.ca/ppms/DBD-mysql.ppd ==================== Install 'DBD-mysql' version 3.0002 in ActivePerl 5.8.7.813. ==================== Downloaded 637299 bytes. Extracting 43/43: blib Installing C:\Perl\site\lib\auto\DBD\mysql\mysql.bs Installing C:\Perl\site\lib\auto\DBD\mysql\mysql.dll Installing C:\Perl\site\lib\auto\DBD\mysql\mysql.exp Installing C:\Perl\site\lib\auto\DBD\mysql\mysql.lib Installing C:\Perl\html\site\lib\Mysql.html Installing C:\Perl\html\site\lib\Bundle\DBD\mysql.html Installing C:\Perl\html\site\lib\DBD\mysql.html Installing C:\Perl\html\site\lib\DBD\mysql\INSTALL.html Files found in blib\arch: installing files in blib\lib into architecture depende nt library tree Installing C:\Perl\site\lib\Mysql.pm Installing C:\Perl\site\lib\Bundle\DBD\mysql.pm Installing C:\Perl\site\lib\DBD\mysql.pm Installing C:\Perl\site\lib\DBD\mysql\GetInfo.pm Installing C:\Perl\site\lib\DBD\mysql\INSTALL.pod Installing C:\Perl\site\lib\Mysql\Statement.pm Successfully installed DBD-mysql version 3.0002 in ActivePerl 5.8.7.813. ppm>

11. Listing dbi drivers perlscript (save in perl/bin) use strict; use warnings; use DBI; print map "$_\n", DBI->available_drivers;

12. Listing dbi drivers C:\PERL\BIN>perl dbidrivers.pl DBM ExampleP File Proxy Sponge mysql C:\PERL\BIN>

13. Mysqltest.pl running perlscript on the commandline with db connection Need an accounts table in mysql containing fields: idnum, name and balance

14. The script: Mysqltest.pl use DBI; my $dsn = "DBI:mysql:database=test;host=localhost"; my $dbh = DBI->connect($dsn, 'root', '', {RaiseError => 1}) || die $DBI::errstr; my $sth = $dbh->prepare(qq{ SELECT idnum,name, balance FROM accounts }); $sth->execute || die "Error fetching data: $DBI::errstr"; while (my ($idnum,$name, $balance) = $sth->fetchrow_array) { print qq{ $name has balance: $balance \n}; } $dbh->disconnect;

15. Running mysqltest.pl C:\PERL\BIN>perl mysqltest.pl bob smith has balance: 1234567.99 sue jones has balance: 11223344.77 allison douglas has balance: 23456.64 wilson pickett has balance: 123.45 Venus Williams has balance: 98776587.11 R2D2 has balance: 12.88 Burt Lancaster has balance: 654832.11 Katie has balance: 389 Pop-Eye has balance: 34.16 C:\PERL\BIN>

16. You’ll need a table in some mysql database

17. Perlscript: part1 #!C:\perl\bin\perl.exe print "Content-type: text/html \n\n"; # PERL MODULES WE WILL BE USING use DBI; use DBD::mysql # HTTP HEADER print "starting..."; $dbh= DBI->connect("DBI:mysql:test;mysql_use_result=1", "root", ""); print "connected..."; # PREPARE THE QUERY my $sth = $dbh->prepare("SELECT * FROM students");

18. execute query…display results # EXECUTE THE QUERY print "executed query..."; if (!$sth) { die "Error:". $dbh->errstr. "\n"; } if (!$sth->execute) { die "Error:". $sth->errstr. "\n"; } my $names = $sth->{'NAME'}; my $numFields = $sth->{'NUM_OF_FIELDS'}; for (my $i = 0; $i < $numFields; $i++) { printf("%s%s", $i ? "," : "", $$names[$i]); } print "\n"; while (my $ref = $sth->fetchrow_arrayref) { for (my $i = 0; $i < $numFields; $i++) { printf("%s%s", $i ? "," : "", $$ref[$i]); } print "\n"; }

19. http://localhost/cgi-bin/dbex6.cgi

20. Inserting a record #!C:\perl\bin\perl.exe print "Content-type: text/html \n\n"; # PERL MODULES WE WILL BE USING use DBI; use DBD::mysql # HTTP HEADER print "starting..."; $dbh= DBI->connect("DBI:mysql:test;mysql_use_result=1", "root", ""); print "connected..."; # PREPARE THE QUERY $query = "INSERT INTO students ( name,id, grade) VALUES ( 'tomatoes', '11111','4')"; my $sth = $dbh->prepare($query); # EXECUTE THE QUERY if (!$sth) { die "Error:". $dbh->errstr. "\n"; } if (!$sth->execute) { die "Error:". $sth->errstr. "\n"; } print "executed query...";

21. Updating records #!C:\perl\bin\perl.exe print "Content-type: text/html \n\n"; # PERL MODULES WE WILL BE USING use DBI; use DBD::mysql # HTTP HEADER print "starting..."; $user = “user"; $pw = "pw"; print "defined vars..."; # DATA SOURCE NAME $dsn = "DBI:mysql:test:localhost:3306"; # PERL DBI CONNECT $dbh= DBI->connect("DBI:mysql:test;mysql_use_result=1", $user,$pw)|| die "Database connection not made: $DBI::errstr"; print "connected..."; $dbh->{RaiseError} = 1; my $sth = $dbh->prepare("UPDATE students SET id = '1212' WHERE name = 'john'"); print "defined sth..."; $sth->execute(); print "executed.."; $sth->finish; $dbh->disconnect; exit; __END__

22. Updating records

23. Updating multiple records

24. $dbh= DBI->connect("DBI:mysql:test;mysql_use_result=1", $user,$pw)|| die "Database connection not made: $DBI::errstr"; print "connected..."; my @names = ("john", "Katie", "tomatoes"); $dbh->{RaiseError} = 1; my $sth = $dbh->prepare("UPDATE students SET grade= '99.9' WHERE name = ?"); print "defined sth..."; foreach $value (@names){ $sth->execute($value); } print "executed.."; $sth->finish; $dbh->disconnect;

25. Using Bind Values There may be a case when values to be entered into the table are not given in advance. In such a case, binding values are used. A question mark is used in place of actual value and then actual values are passed through the execute() API.

26. Example: bind and execute using form parameters my($name, $street, $city) = (param("name"), param("street"), param("city"));#params from a form my $sth = $dbh->prepare("INSERT INTO TEST_TABLE (NAME, STREET, CITY) values (?,?,?)"); $sth->execute($name,$street,$city) or die $DBI::errstr; $sth->finish(); $dbh->commit or die $DBI::errstr;

27. bind and execute for an arbitrary query $age = param(‘age’);#or read from a file or from input my $sth = $dbh->prepare("SELECT FIRST_NAME, LAST_NAME FROM TEST_TABLE WHERE AGE > ?"); $sth->execute( $age ) or die $DBI::errstr; print "Number of rows found :" + $sth->rows; while (my @row = $sth->fetchrow_array()) { my ($first_name, $last_name ) = @row; print "First Name = $first_name, Last Name = $last_name\n"; } $sth->finish();

28. An html to perform sql

29. Perl performs query