libraries/parse_analyze.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Parse and analyse a SQL query
   5  *
   6  * @package PhpMyAdmin
   7  */
   8 if (! defined('PHPMYADMIN')) {
   9     exit;
  10 }
  11
  12 /**
  13  *
  14  */
  15 $GLOBALS['unparsed_sql'] = $sql_query;
  16 $parsed_sql = PMA_SQP_parse($sql_query);
  17 $analyzed_sql = PMA_SQP_analyze($parsed_sql);
  18
  19 // for bug 780516: now that we use case insensitive preg_match
  20 // or flags from the analyser, do not put back the reformatted query
  21 // into $sql_query, to make this kind of query work without
  22 // capitalizing keywords:
  23 //
  24 // CREATE TABLE SG_Persons (
  25 //  id int(10) unsigned NOT NULL auto_increment,
  26 //  first varchar(64) NOT NULL default '',
  27 //  PRIMARY KEY  (`id`)
  28 // )
  29
  30 // check for a real SELECT ... FROM
  31 $is_select = isset($analyzed_sql[0]['queryflags']['select_from']);
  32
  33 // If the query is a Select, extract the db and table names and modify
  34 // $db and $table, to have correct page headers, links and left frame.
  35 // db and table name may be enclosed with backquotes, db is optionnal,
  36 // query may contain aliases.
  37
  38 /**
  39  * @todo if there are more than one table name in the Select:
  40  * - do not extract the first table name
  41  * - do not show a table name in the page header
  42  * - do not display the sub-pages links)
  43  */
  44 if ($is_select) {
  45     $prev_db = $db;
  46     if (isset($analyzed_sql[0]['table_ref'][0]['table_true_name'])) {
  47         $table = $analyzed_sql[0]['table_ref'][0]['table_true_name'];
  48     }
  49     if (isset($analyzed_sql[0]['table_ref'][0]['db'])
  50         && strlen($analyzed_sql[0]['table_ref'][0]['db'])
  51     ) {
  52         $db    = $analyzed_sql[0]['table_ref'][0]['db'];
  53     } else {
  54         $db = $prev_db;
  55     }
  56     // Nijel: don't change reload, if we already decided to reload in import
  57     if (empty($reload) && empty($GLOBALS['is_ajax_request'])) {
  58         $reload  = ($db == $prev_db) ? 0 : 1;
  59     }
  60 }
  61 ?>