diff --git a/DatabaseMysql.php b/DatabaseMysql.php
index 20440e8..51d9066 100644
--- a/DatabaseMysql.php
+++ b/DatabaseMysql.php
@@ -32,6 +32,7 @@ class DatabaseMysql implements Database
     var $tableNames = array();
     var $queryLogFile;
     var $reconnect = true;
+    var $autoBegin;
     var $ondestroy = 'commit';
 
     var $queryCount = 0;
@@ -51,6 +52,7 @@ class DatabaseMysql implements Database
      *     tableNames   Table name mappings (virtual => real)
      *     queryLogFile Path to query log file
      *     reconnect    Whether to reconnect on idle timeout    [true]
+     *     autoBegin    Whether to automatically begin a transaction of first query [false]
      *     ondestroy    commit/rollback/none during destruction [commit]
      */
     function __construct($options)
@@ -65,6 +67,7 @@ class DatabaseMysql implements Database
             'reconnect' => true,
             'tableNames' => array(),
             'queryLogFile' => '',
+            'autoBegin' => false,
             'ondestroy' => 'commit',
         );
         $options += $defOpts;
@@ -112,6 +115,10 @@ class DatabaseMysql implements Database
         else
         {
             $this->link->set_charset('utf8');
+            if ($this->autoBegin)
+            {
+                $this->begin();
+            }
         }
     }
 
@@ -129,12 +136,12 @@ class DatabaseMysql implements Database
     {
         $i = 0;
         $r = '';
-        while (($p = strrpos($str, '?')) !== false)
+        while (($p = strpos($str, '?')) !== false)
         {
-            $r = $this->quote($params[$i++]) . substr($str, $p+1) . $r;
-            $str = substr($str, 0, $p);
+            $r .= substr($str, 0, $p) . $this->quote($params[$i++]);
+            $str = substr($str, $p+1);
         }
-        return $str.$r;
+        return $r.$str;
     }
 
     function quote($value)
@@ -152,15 +159,15 @@ class DatabaseMysql implements Database
 
     function query($sql, $fetchMode = MYSQLI_STORE_RESULT)
     {
+        if (!$this->link)
+        {
+            $this->connect();
+        }
         $this->queryCount++;
         if ($this->queryLogFile)
         {
             file_put_contents($this->queryLogFile, date("[Y-m-d H:i:s] ").$sql."\n", FILE_APPEND);
         }
-        if (!$this->link)
-        {
-            $this->connect();
-        }
         $r = $this->link->query($sql, $fetchMode);
         if (!$r)
         {
@@ -184,6 +191,10 @@ class DatabaseMysql implements Database
 
     function multi_select(array $queries, $format = 0)
     {
+        if (!$this->link)
+        {
+            $this->connect();
+        }
         $this->queryCount += count($queries);
         $log = '';
         foreach ($queries as &$sql)
@@ -199,10 +210,6 @@ class DatabaseMysql implements Database
         {
             file_put_contents($this->queryLogFile, $log, FILE_APPEND);
         }
-        if (!$this->link)
-        {
-            $this->connect();
-        }
         $sql = implode('; ', $queries);
         $r = $this->link->multi_query($sql);
         if (!$r)
@@ -223,10 +230,15 @@ class DatabaseMysql implements Database
             }
         }
         $results = array();
+        $i = 0;
         foreach ($queries as $k => $q)
         {
+            if ($i++)
+            {
+                $this->link->next_result();
+            }
+            $r = $this->link->store_result();
             $results[$k] = $this->fetch_all($r, $format);
-            $this->link->next_result();
         }
         return $results;
     }
@@ -356,15 +368,15 @@ class DatabaseMysql implements Database
             else
                 $wh[] = "$k IS NULL";
         }
-        if (!$wh)
-            $where = '1';
-        elseif (!$this->username && !$this->password && !$this->dbname)
+        if (!$this->username && !$this->password && !$this->dbname)
         {
             // Sphinx supports neither brackets nor OR operator as of 2.0.6-release O_o
             $where = join(' AND ', $wh);
         }
-        else
+        elseif ($where)
             $where = '(' . join(') AND (', $wh) . ')';
+        else
+            $where = '';
         return $where;
     }
 
@@ -383,7 +395,7 @@ class DatabaseMysql implements Database
      *   'FOR UPDATE' or 'LOCK IN SHARE MODE'
      *   'GROUP BY' => array($groupby_field1 => 'ASC', $groupby_field2 => 'DESC')
      *   'ORDER BY' => array($orderby_field1 => 'ASC', $orderby_field2 => 'DESC')
-     *   'LIMIT' => array($limit, $offset) or array($limit) or just $limit
+     *   'LIMIT' => array($offset, $limit) or array($limit) or just $limit
      *   'OFFSET' => $offset, for the case when 'LIMIT' is just $limit
      *
      *   Sphinx Search extensions:
@@ -415,7 +427,11 @@ class DatabaseMysql implements Database
             $sql .= 'SQL_NO_CACHE ';
         elseif (isset($options['CACHE']) || isset($options['SQL_CACHE']))
             $sql .= 'SQL_CACHE ';
-        $sql .= "$fields FROM $tables WHERE $where";
+        $sql .= "$fields FROM $tables";
+        if ($where)
+        {
+            $sql .= " WHERE $where";
+        }
         if (isset($options['GROUP BY']))
         {
             $sql .= " GROUP BY ".$this->order_option($options['GROUP BY']);
@@ -510,7 +526,7 @@ class DatabaseMysql implements Database
                         else
                             $table = (isset($this->tableNames[$v[1]]) ? $this->quoteId($this->tableNames[$v[1]]) : $v[1]) . ' ' . $k;
                         if ($t)
-                            $t .= " $join JOIN $table ON ".$this->where_builder($v[2]);
+                            $t .= " $join JOIN $table ON ".($this->where_builder($v[2]) ?: '1=1');
                         else
                             $t = $table;
                         continue;
@@ -558,7 +574,7 @@ class DatabaseMysql implements Database
      */
     function select($tables, $fields = '*', $where = 1, $options = NULL, $format = 0)
     {
-        if (is_int($fields) || is_string($fields) && ctype_digit($fields))
+        if (is_int($fields))
         {
             $sql = $tables;
             $format = $fields;
@@ -624,7 +640,7 @@ class DatabaseMysql implements Database
     function delete($tables, $where, $options = NULL)
     {
         $tables = $this->tables_builder($tables);
-        $where = $this->where_builder($where);
+        $where = $this->where_builder($where) ?: '1=1';
         $sql = "DELETE FROM $tables WHERE $where";
         $sql .= $this->limit_option($options);
         $this->query($sql);
@@ -653,8 +669,9 @@ class DatabaseMysql implements Database
                 $rs[] = $this->quote($r[$k]);
             $r = "(".implode(",", $rs).")";
         }
+        $sphinx = !$this->username && !$this->password && !$this->dbname;
         foreach ($key as &$k)
-            if (strpos($k, '`') === false)
+            if (strpos($k, '`') === false && (!$sphinx || $k !== 'id'))
                 $k = $this->quoteId($k);
         $sql = ($replace ? "REPLACE" : "INSERT").
             " INTO $table (".implode(",",$key).") VALUES ".implode(",",$rows);
@@ -715,16 +732,14 @@ class DatabaseMysql implements Database
         else
         {
             $sql = array();
-            if (!is_array($rows))
-                $rows = array($rows);
-            foreach ($rows as $k => $v)
+            foreach ((array)$rows as $k => $v)
             {
                 if (!ctype_digit("$k"))
                     $sql[] = $k.'='.$this->quote($v);
                 else
                     $sql[] = $v;
             }
-            $where = $this->where_builder($where);
+            $where = $this->where_builder($where) ?: '1=1';
             $sql = 'UPDATE ' . $this->tables_builder($table) . ' SET ' . implode(', ', $sql) . ' WHERE ' . $where;
             $sql .= $this->limit_option($options);
         }