在我的代码中,我必须做一个类似条件的简单SQL查询.
我是这样做的
我是这样做的
my $out = "/Users/zero/out.log";
my $filename = "/Users/zero/data.txt";
my $dbh = DBI->connect("DBI:Oracle:sid=$sid;host=$host;port=$port",$user,$pwd) or die "Couldn't connect to database: " . DBI->errstr;
my $query = "select SOMETHING from SOMETHING_1 where SOMETHING like ?||'%' ";
my $sth = $dbh->prepare($query) or die "Connection Error: " . $dbh->errstr;
open (IN,"< $filename") or die("Unable to open $filename");
my @righe = <IN>;
close IN;
open (OUT,">$out") or die "Unable to open $out";
foreach my $riga (@righe) {
chomp $riga;
(my $valore) = split (/\n/,$riga);
$sth->execute($valore) ||print "Impossibile eseguire la query $query";
while (my $real = $sth->fetchrow_array) {
print OUT "\"$real\"\n";
}
}
$sth->finish;
$dbh->disconnect();
但查询返回所有行,忽略了类似的条件.
哪里是我的错？
谢谢
解决方法
您必须将％char连接到您搜索的变量.
my $query = "select SOMETHING from SOMETHING_1 where SOMETHING like ?"; ... $sth->execute($valore.'%') ||print "Impossibile eseguire la query $query";