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#########################################################
#!/usr/bin/perl -w
use strict;
use DBI;
my $dbh = DBI->connect('DBI:mysql:counterdb:localhost:3306', 'nakanishi', 'nakanishidayo') || die "sine";
my $sth = $dbh->prepare("select count from counter_table")|| die "sine";
$sth->execute || die "sine";
my $count;
while ( $count = $sth->fetchrow_array ){
print "$count";
$count++;
}
$sth = $dbh->prepare("update counter_table set count = ?") || die "sine";
$sth->bind_param(1, $count) || die "sine";
$sth->execute;
#########################################################
¤Ä¤¤¤Ç¡¢»²¹Í¥Ú¡¼¥¸¤ò¤ª¤â¤¤¤Ã¤¤ê»È¤ï¤»¤Æ¤â¤é¤Ã¤¿¥Ð¡¼¥¸¥ç¥ó¡£¤³¤ì¤Ç¤¦¤´¤¤Þ¤·¤¿¡£
#########################################################
#!/usr/bin/perl
use strict;
use DBI;
my $dsn = 'DBI:mysql:counterdb:localhost:3306';
my $user = 'nakanishi';
my $password = 'nakanishidayo';
my $dbh = DBI->connect($dsn, $user, $password,
{RaiseError => 1, PrintError => 0, AutoCommit => 0 }) || die "$!";
eval {
&mainwork();
$dbh->commit;
$dbh->disconnect;
};
if ( $@ ){
$dbh->rollback;
$dbh->disconnect;
}
exit 0;
#--------------------------
sub mainwork {
my $sql = "select count from counter_table";
my $sth = $dbh->prepare($sql);
$sth->execute;
while ( my $arr_ref = $sth->fetchrow_arrayref ){
my ($count) = @$arr_ref;
print "$count\n";
$count++;
my $sql = "update counter_table set count = ?";
my $sth = $dbh->prepare($sql);
$sth->bind_param(1, $count);
my $rows = $sth->execute;
# Àµ¾ï»þ¤Ï¡¢¤³¤³¤Ç 1¹Ô¤À¤±¹¹¿·¤µ¤ì¤ë¤â¤Î¤È¤¹¤ë¡£
if ( $rows != 1 ){
die "¹¹¿·¹Ô¿ô¤¬°Û¾ï!";
}
}
}
#########################################################
¼Â¹Ô¤µ¤ì¤ë¤¿¤Ó¡¡£±¤º¤ÄÁý¤¨¤ë¡£¤¿¤À¤½¤ì¤À¤±¤Ç¤¹¡¦¡¦¡¦
Äɵ¡§
½ã¿è¤Ë°Ê²¼¤Î¤è¤¦¤Ë¤¹¤ë¤Èư¤¤¤¿¡£
########################################
#!/usr/bin/perl -w
use strict;
use DBI;
my $dbh = DBI->connect('DBI:mysql:counterdb:localhost:3306', 'nakanishi', 'nakanishidayo') || die "sine";
my $sth = $dbh->prepare("select count from counter_table")|| die "sine";
$sth->execute || die "sine";
my @recode;
my ($count);
while ( @recode = $sth->fetchrow_array ){
$count = $recode[0];
print "$count";
$count++;
}
$sth = $dbh->prepare("update counter_table set count = ?") || die "sine";
$sth->bind_param(1, $count) || die "sine";
$sth->execute;
########################################
¤Ç¤âľ¤Ë$recode[0]++;¡¡¤È¥¤¥ó¥¯¥ê¥á¥ó¥È¤·¤Á¤ã¤¦¤È¤ï¤±¤ï¤«¤é¤ó·ë²Ì¤Ë¡£ $recode[0]¤Ï¥¤¥ó¥¯¥ê¥á¥ó¥È¤µ¤ì¤º¡¡0 ¤Ë¤Ê¤ë¤Ã¤Ý¤¤¡£
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