diff --git a/Library/Think/Db/Driver.php b/Library/Think/Db/Driver.php
index 1c9e7dbb..facfe284 100644
--- a/Library/Think/Db/Driver.php
+++ b/Library/Think/Db/Driver.php
@@ -430,7 +430,7 @@ abstract class Driver {
                 if(!is_numeric($table))
                     $array[] =  $this->parseKey($table).' '.$this->parseKey($alias);
                 else
-                    $array[] =  $this->parseKey($table);
+                    $array[] =  $this->parseKey($alias);
             }
             $tables  =  $array;
         }elseif(is_string($tables)){
@@ -563,7 +563,7 @@ abstract class Driver {
             }
         }else {
             //对字符串类型字段采用模糊匹配
-            if($this->conf['db_like_fields'] && preg_match('/('.$this->conf['db_like_fields'].')/i',$key)) {
+            if($this->config['db_like_fields'] && preg_match('/('.$this->config['db_like_fields'].')/i',$key)) {
                 $val  =  '%'.$val.'%';
                 $whereStr .= $key.' LIKE '.$this->parseValue($val);
             }else {
diff --git a/Library/Think/Db/Driver/Mysql.php b/Library/Think/Db/Driver/Mysql.php
index efa6dc4d..8f1b70bb 100644
--- a/Library/Think/Db/Driver/Mysql.php
+++ b/Library/Think/Db/Driver/Mysql.php
@@ -42,6 +42,7 @@ class Mysql extends Driver{
      */
     public function getFields($tableName) {
         $this->initConnect(true);
+        list($tableName) = explode(' ', $tableName);
         $sql   = 'SHOW COLUMNS FROM `'.$tableName.'`';
         $result = $this->query($sql);
         $info   =   [];
diff --git a/Library/Think/Db/Driver/Oracle.php b/Library/Think/Db/Driver/Oracle.php
index 3b1f5e49..ae77e14f 100644
--- a/Library/Think/Db/Driver/Oracle.php
+++ b/Library/Think/Db/Driver/Oracle.php
@@ -80,6 +80,7 @@ class Oracle extends Driver{
      * @access public
      */
      public function getFields($tableName) {
+        list($tableName) = explode(' ', $tableName);
         $result = $this->query("select a.column_name,data_type,decode(nullable,'Y',0,1) notnull,data_default,decode(a.column_name,b.column_name,1,0) pk "
                   ."from user_tab_columns a,(select column_name from user_constraints c,user_cons_columns col "
           ."where c.constraint_name=col.constraint_name and c.constraint_type='P'and c.table_name='".strtoupper($tableName)
diff --git a/Library/Think/Db/Driver/Pgsql.php b/Library/Think/Db/Driver/Pgsql.php
index 8dd72cac..dc478103 100644
--- a/Library/Think/Db/Driver/Pgsql.php
+++ b/Library/Think/Db/Driver/Pgsql.php
@@ -37,6 +37,7 @@ class Pgsql extends Driver{
      * @return array
      */
     public function getFields($tableName) {
+        list($tableName) = explode(' ', $tableName);
         $result =   $this->query('select fields_name as "field",fields_type as "type",fields_not_null as "null",fields_key_name as "key",fields_default as "default",fields_default as "extra" from table_msg('.$tableName.');');
         $info   =   [];
         if($result){
diff --git a/Library/Think/Db/Driver/Sqlite.php b/Library/Think/Db/Driver/Sqlite.php
index fcb77e13..02c0f14a 100644
--- a/Library/Think/Db/Driver/Sqlite.php
+++ b/Library/Think/Db/Driver/Sqlite.php
@@ -34,6 +34,7 @@ class Sqlite extends Driver {
      * @return array
      */
     public function getFields($tableName) {
+        list($tableName) = explode(' ', $tableName);
         $result =   $this->query('PRAGMA table_info( '.$tableName.' )');
         $info   =   [];
         if($result){
diff --git a/Library/Think/Db/Driver/Sqlsrv.php b/Library/Think/Db/Driver/Sqlsrv.php
index 80e73fa8..04e71ad3 100644
--- a/Library/Think/Db/Driver/Sqlsrv.php
+++ b/Library/Think/Db/Driver/Sqlsrv.php
@@ -46,6 +46,7 @@ class Sqlsrv extends Driver{
      * @return array
      */
     public function getFields($tableName) {
+        list($tableName) = explode(' ', $tableName);
         $result =   $this->query("SELECT   column_name,   data_type,   column_default,   is_nullable
         FROM    information_schema.tables AS t
         JOIN    information_schema.columns AS c
diff --git a/Library/Think/Model.php b/Library/Think/Model.php
index a4254b33..625b4e56 100644
--- a/Library/Think/Model.php
+++ b/Library/Think/Model.php
@@ -396,7 +396,7 @@ class Model {
         $options['model']       =   $this->name;
 
         if(isset($options['table'])) {// 动态指定表名
-            $fields     =   $this->db->getFields($this->options['table']);
+            $fields     =   $this->db->getFields($options['table']);
             $fields     =   $fields?array_keys($fields):false;
         }else{
             $options['table']   =   $this->getTableName();