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File: mysql.php

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  Classes of Cesar D. Rodas  >  guaranix Rank  >  mysql.php  >  Download  
File: mysql.php
Role: Auxiliary script
Content type: text/plain
Description: This is the MySQL functions
Class: guaranix Rank
Implementation of the Google page rank algorithm
Author: By
Last change:
Date: 16 years ago
Size: 1,553 bytes


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* Prepare
$sql[] = "DROP TABLE IF EXISTS tmp_pr";
$sql[] = "
    CREATE TABLE tmp_pr (
      id bigint(20) NOT NULL default '0',
      formula longtext NOT NULL,
      nroout int(11) NOT NULL default '0',
      pr float NOT NULL default '0',
      PRIMARY KEY (id),
      KEY nroout (nroout)

$sql[] = "CREATE TABLE tmp_nodanglins AS SELECT count( * ) as total, master FROM pagerank GROUP BY MASTER";
$sql[] = "ALTER TABLE `tmp_nodanglins` ADD PRIMARY KEY ( `master` ) ";

$sql[] = "CREATE TABLE tmp_unilist as (select distinct master as id from pagerank) union (select distinct slave as id from pagerank)";
$sql[] = "ALTER TABLE `tmp_unilist` ADD PRIMARY KEY ( `id` ) ;";

$sql[] = "Insert into tmp_pr(id,nroout) select, from tmp_unilist left join tmp_nodanglins on (tmp_nodanglins.master =";

* This SQL command are executed when the PR calculation finish.
$sql_finish[] = "CREATE TABLE `PR_FINISHED` (
  `posicion` int(11) NOT NULL auto_increment,
  `id` int(11) NOT NULL default '0',
  `pagerank` float NOT NULL default '0',
  PRIMARY KEY (`posicion`),
  UNIQUE KEY `id` (`id`),
  KEY `pagerank` (`pagerank`)

$sql_finish[] = "INSERT INTO PR_FINISHED(id,pagerank) SELECT, FROM tmp_pr ORDER BY DESC";

$sql_finish[] = "DROP TABLE tmp_unilist;";
$sql_finish[] = "DROP TABLE tmp_pr;";
$sql_finish[] = "DROP TABLE tmp_nodanglins;";

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