Windows和Linux系统下perl连接SQL Server数据库的方法

perl脚本运行在windows/" target="_blank" title="windows">Windows和Linux平台上,如果在Windows平台下运行perl脚本,建议使用依赖DBI的两个模块包,本篇文章是Windows和Linux系统下perl连接SQL Server数据库的方法,一起来看看吧!

Windows平台

如果在Windows平台下运行perl脚本,建议使用依赖DBI的两个模块包,提供标准的数据库接口模块。

DBD::ODBC
DBD::ADO

使用DBD::ODBC

如果选用DBD::ODBC,下面的实例代码将展示如何连接到SQL Server数据库:


use DBI;

# DBD::ODBC

my $dsn = 'DBI:ODBC:Driver={SQL Server}';
my $host = '10.0.0.1,1433';
my $database = 'my_database';
my $user = 'sa';
my $auth = ‘s3cr3t';

# Connect via DBD::ODBC by specifying the DSN dynamically.
my $dbh = DBI->connect("$dsn;Server=$host;Database=$database",
$user,
$auth,
{ RaiseError => 1, AutoCommit => 1}
) || die "Database connection not made: $DBI::errstr";

#Prepare a SQL statement my $sql = "SELECT id, name, phone_number FROM employees ";
my $sth = $dbh->prepare( $sql );

#Execute the statement
$sth->execute();

my( $id, $name, $phone_number );

# Bind the results to the local variables
$sth->bind_columns( undef, \$id, \$name, \$phone_number );

#Retrieve values from the result set
while( $sth->fetch() ) {
print "$id, $name, $phone_number\n";
}

#Close the connection
$sth->finish();
$dbh->disconnect();

你还可以使用预先设置的一个系统DSN来连接。要建立一个系统DSN,可以这样访问控制面板->管理工具->数据源。

使用系统DSN连接,需要更改连接字符串。如下所示:


# Connect via DBD::ODBC using a System DSN
my $dbh = DBI->connect("dbi:ODBC:my_system_dsn",
$user,
$auth,
{
RaiseError => 1,
AutoCommit => 1
}
) || die "Database connection not made: $DBI::errstr";

使用DBD::ADO

如果选择DBD::ADO模块,下面的实例展示如何连接到SQL Server数据库。


use DBI;

my $host = '10.0.0.1,1433';
my $database = 'my_database';
my $user = 'sa';
my $auth = ‘s3cr3t';

# DBD::ADO
$dsn = "Provider=sqloledb;Trusted Connection=yes;";
$dsn .= "Server=$host;Database=$database";
my $dbh = DBI->connect("dbi:ADO:$dsn",
$user,
$auth,
{ RaiseError => 1, AutoCommit => 1}
) || die "Database connection not made: $DBI::errstr";

#Prepare a SQL statement
my $sql = "SELECT id, name, phone_number FROM employees "; my $sth = $dbh->prepare( $sql );

#Execute the statement
$sth->execute();

my( $id, $name, $phone_number );

# Bind the results to the local variables
$sth->bind_columns( undef, \$id, \$name, \$phone_number );

#Retrieve values from the result set
while( $sth->fetch() ) {
print "$id, $name, $phone_number\n";
}

#Close the connection
$sth->finish();
$dbh->disconnect();

Linux平台

如果是在Linux平台下运行perl脚本,连接SQL Server数据库需要使用到DBD::Sybase包。

安装SQL Server支持库

Sybase DBD包依赖FreeTDS驱动程序。

FreeTDS下载地址:www.freetds.org

安装FreeTDS驱动的说明文档参见:http://www.freetds.org/userguide/config.htm

该驱动没有使用到ODBC.

配置数据源

修改freetds.conf文件包括SQL Server数据库信息,如下所示:


[SS_MY_DB]
host = 10.0.0.1 # or host name port = 1433
tds version = 7.0

安装Sybase DBD模块

该模块文档参见:http://search.cpan.org/~mewp/DBD-Sybase/Sybase.pm

此外,需要将sybase环境变量应设置为FreeTDS安装路径,export SYBASE=/usr/local/freetds

使用Sybase DBI和SQL Server DSN实例


# load the DBI module
use DBI;
use DBD::Sybase;

my $database="my_database";
my $user="sa";
my $auth="s3cr3t";

BEGIN
{
$ENV{SYBASE} = "/usr/local";
}

# Connect to the SQL Server Database
my $dbh = DBI->connect("dbi:Sybase:server=ss_my_db;database=$database",
$user,
$auth
{RaiseError => 1, AutoCommit => 1}
) || die "Database connection not made: $DBI::errstr";

#Prepare a SQL statement
my $sql = "SELECT id, name, phone_number FROM employees";
my $sth = $dbh->prepare( $sql );

#Execute the statement
$sth->execute();

my( $id, $name, $phone_number );

# Bind the results to the local variables
$sth->bind_columns( undef, \$id, \$name, \$phone_number );

#Retrieve values from the result set
while( $sth->fetch() ) { print "$name, $title, $phone\n";
}

#Close the connection
$sth->finish();
undef $sth; # This fixes a segfault bug with certain versions of DBD::Sybase
$dbh->disconnect();

以上就是关于Windows和Linux系统下perl连接SQL Server数据库的方法,虽然现在的技术人员需求没以前那么火爆,但是它竞争没那么大的。