名称PDL::IO::DBI-从数据库创建PDL（针对速度和大数据进行了优化）概要use PDL;use PDL::IO::DBI':all';#simple usage-using DSN+SQL query my$sql="select ymd,open,high,low,close from quote where symbol='AAPL'AND ymd>=20140404order by ymd";my$pdl=rdbi2D("dbi:SQLite:dbname=Quotes.db",$sql);use DBI;#using DBI handle+SQL query with binded values my$dbh=DBI->connect("dbi:Pg:dbname=QDB;host=loca