预客户端节点
分布式查询引擎“Presto”的 node.js 客户端库。
var presto = require ( 'presto-client' ) ;
var client = new presto . Client ( { user : 'myname' } ) ;
client . execute ( {
query : 'SELECT count(*) as cnt FROM tblname WHERE ...' ,
catalog : 'hive' ,
schema : 'default' ,
source : 'nodejs-client' ,
state : function ( error , query_id , stats ) { console . log ( { message : "status changed" , i