diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..757fee3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/.idea
\ No newline at end of file
diff --git a/README.md b/README.md
index eb262e3..16104f2 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,20 @@
 # DM DB driver for Laravel 4|5|6|7|8|9 via DM8
 
+## 查询写法
+> 1. 使用 `selectRaw` 或者 `DB::raw` 函数查询时，如果当前数据库是忽略大小写的，一律返回小写字段名，
+
+
+## 推荐更新版本到最新版
+
+> 修改部分适配 Laravel  
+> 1. 适配 InsertGetId，当表主键非 id 时，需要指定主键列名
+> 2. 修复 DmBuilder 中 DmAutoIncrementHelper 引用
+> 3. 适配 withCount, 主要是 x_table as y 情况 前缀补充，原包，没有在 y 前面追加前缀，和 Laravel 不兼容
+> 4. 适配 cast json ，数组参数转 json 入库
+> 5. 兼容 mysql group_concat 函数，内部转化为 wm_concat 函数
+> 6. 修复表单验证中 exists 和 unique，去除对 getCount 和 getMultiCount 的重写。原包是对 oracle 进行大小写不敏感设置，但是达梦数据库不支持
+> 7. 修复自动递增，匹配 laravel migration。原包中将 migration 中的 int 和 bigint 均转化为 number 无法使 auto_increment 生效
+
 ## Laravel-DM8
 
 Laravel-DM8 is an Dm Database Driver package for [Laravel](http://laravel.com/). Laravel-DM8 is an extension of [Illuminate/Database](https://github.com/illuminate/database) that uses [DM8](https://eco.dameng.com/document/dm/zh-cn/faq/faq-php.html#PHP-Startup-Unable-to-load-dynamic-library) extension to communicate with Dm. Thanks to @yajra.
@@ -29,7 +44,7 @@ Laravel-DM8 is an Dm Database Driver package for [Laravel](http://laravel.com/).
 ## Quick Installation
 
 ```bash
-composer require jackfinal/laravel-dm8
+composer require maxlcoder/laravel-dm8
 ```
 
 ## Service Provider (Optional on Laravel 5.5+)
diff --git a/composer.json b/composer.json
index a578781..87a806d 100644
--- a/composer.json
+++ b/composer.json
@@ -1,11 +1,11 @@
 {
-    "name": "jackfinal/laravel-dm8",
+    "name": "maxlcoder/laravel-dm8",
     "description": "php_dm dm8",
     "license": "MIT",
     "authors": [
         {
-            "name": "Jack Final",
-            "email": "final_m@foxmail.com"
+            "name": "Woody",
+            "email": "liurenlin77@gmail.com"
         }
     ],
     "require": {
diff --git a/src/Dm8/Connectors/DmConnector.php b/src/Dm8/Connectors/DmConnector.php
index 0a30ba8..6e120af 100755
--- a/src/Dm8/Connectors/DmConnector.php
+++ b/src/Dm8/Connectors/DmConnector.php
@@ -15,7 +15,7 @@ class DmConnector extends Connector implements ConnectorInterface
      * @var array
      */
     protected $options = [
-        PDO::ATTR_CASE               => PDO::CASE_LOWER,
+        PDO::ATTR_CASE               => PDO::CASE_NATURAL,
         PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
         PDO::ATTR_ORACLE_NULLS       => PDO::NULL_NATURAL,
         PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_OBJ,
diff --git a/src/Dm8/Dm8Connection.php b/src/Dm8/Dm8Connection.php
index 92b93a1..d9fd767 100755
--- a/src/Dm8/Dm8Connection.php
+++ b/src/Dm8/Dm8Connection.php
@@ -31,12 +31,12 @@ class Dm8Connection extends Connection
     protected $schema;
 
     /**
-     * @var \Yajra\Oci8\Schema\Sequence
+     * @var \LaravelDm8\Dm8\Schema\Sequence
      */
     protected $sequence;
 
     /**
-     * @var \Yajra\Oci8\Schema\Trigger
+     * @var \LaravelDm8\Dm8\Schema\Trigger
      */
     protected $trigger;
 
@@ -107,7 +107,7 @@ public function setSessionVars(array $sessionVars)
     /**
      * Get sequence class.
      *
-     * @return \Yajra\Oci8\Schema\Sequence
+     * @return \LaravelDm8\Dm8\Schema\Sequence
      */
     public function getSequence()
     {
@@ -117,8 +117,8 @@ public function getSequence()
     /**
      * Set sequence class.
      *
-     * @param  \Yajra\Oci8\Schema\Sequence  $sequence
-     * @return \Yajra\Oci8\Schema\Sequence
+     * @param  \LaravelDm8\Dm8\Schema\Sequence  $sequence
+     * @return \LaravelDm8\Dm8\Schema\Sequence
      */
     public function setSequence(Sequence $sequence)
     {
@@ -138,8 +138,8 @@ public function getTrigger()
     /**
      * Set oracle trigger class.
      *
-     * @param  \Yajra\Oci8\Schema\Trigger  $trigger
-     * @return \Yajra\Oci8\Schema\Trigger
+     * @param  \LaravelDm8\Dm8\Schema\Trigger  $trigger
+     * @return \LaravelDm8\Dm8\Schema\Trigger
      */
     public function setTrigger(Trigger $trigger)
     {
@@ -191,11 +191,11 @@ public function setDateFormat($format = 'YYYY-MM-DD HH24:MI:SS')
     /**
      * Get doctrine driver.
      *
-     * @return \Doctrine\DBAL\Driver\OCI8\Driver|\Yajra\Oci8\PDO\Oci8Driver
+     * @return \Doctrine\DBAL\Driver\OCI8\Driver|\LaravelDm8\Dm8\PDO\DmDriver
      */
     protected function getDoctrineDriver()
     {
-        return class_exists(Version::class) ? new DoctrineDriver : new Oci8Driver();
+        return class_exists(Version::class) ? new DoctrineDriver : new DmDriver();
     }
 
     /**
@@ -326,7 +326,7 @@ public function createStatementFromFunction($functionName, array $bindings)
     /**
      * Get the default query grammar instance.
      *
-     * @return \Illuminate\Database\Grammar|\Yajra\Oci8\Query\Grammars\OracleGrammar
+     * @return \Illuminate\Database\Grammar|\LaravelDm8\Dm8\Query\Grammars\DmGrammar
      */
     protected function getDefaultQueryGrammar()
     {
@@ -336,7 +336,7 @@ protected function getDefaultQueryGrammar()
     /**
      * Set the table prefix and return the grammar.
      *
-     * @param  \Illuminate\Database\Grammar|\Yajra\Oci8\Query\Grammars\OracleGrammar|\Yajra\Oci8\Schema\Grammars\OracleGrammar  $grammar
+     * @param  \Illuminate\Database\Grammar|\LaravelDm8\Dm8\Query\Grammars\DmGrammar|\LaravelDm8\Dm8\Schema\Grammars\DmGrammar  $grammar
      * @return \Illuminate\Database\Grammar
      */
     public function withTablePrefix(Grammar $grammar)
@@ -347,7 +347,7 @@ public function withTablePrefix(Grammar $grammar)
     /**
      * Set the schema prefix and return the grammar.
      *
-     * @param  \Illuminate\Database\Grammar|\Yajra\Oci8\Query\Grammars\OracleGrammar|\Yajra\Oci8\Schema\Grammars\OracleGrammar  $grammar
+     * @param  \Illuminate\Database\Grammar|\LaravelDm8\Dm8\Query\Grammars\DmGrammar|\LaravelDm8\Dm8\Schema\Grammars\DmGrammar  $grammar
      * @return \Illuminate\Database\Grammar
      */
     public function withSchemaPrefix(Grammar $grammar)
@@ -370,7 +370,7 @@ protected function getConfigSchemaPrefix()
     /**
      * Get the default schema grammar instance.
      *
-     * @return \Illuminate\Database\Grammar|\Yajra\Oci8\Schema\Grammars\OracleGrammar
+     * @return \Illuminate\Database\Grammar|\LaravelDm8\Dm8\Schema\Grammars\DmGrammar
      */
     protected function getDefaultSchemaGrammar()
     {
@@ -380,7 +380,7 @@ protected function getDefaultSchemaGrammar()
     /**
      * Get the default post processor instance.
      *
-     * @return \Yajra\Oci8\Query\Processors\OracleProcessor
+     * @return \LaravelDm8\Dm8\Query\Processors\DmProcessor
      */
     protected function getDefaultPostProcessor()
     {
@@ -452,23 +452,23 @@ protected function causedByLostConnection(Throwable $e)
     }
 
     /**
-     * Set oracle NLS session to case insensitive search & sort.
+     * Set dm NLS session to case insensitive search & sort.
      *
      * @return $this
      */
     public function useCaseInsensitiveSession()
     {
-        return $this->setSessionVars(['NLS_COMP' => 'LINGUISTIC', 'NLS_SORT' => 'BINARY_CI']);
+        return $this->setSessionVars(['CASE_SENSITIVE' => 'FALSE']);
     }
 
     /**
-     * Set oracle NLS session to case sensitive search & sort.
+     * Set dm NLS session to case sensitive search & sort.
      *
      * @return $this
      */
     public function useCaseSensitiveSession()
     {
-        return $this->setSessionVars(['NLS_COMP' => 'BINARY', 'NLS_SORT' => 'BINARY']);
+        return $this->setSessionVars(['CASE_SENSITIVE' => 'TRUE']);
     }
 
     /**
diff --git a/src/Dm8/Eloquent/DmEloquent.php b/src/Dm8/Eloquent/DmEloquent.php
index 7f4652d..9efbfce 100644
--- a/src/Dm8/Eloquent/DmEloquent.php
+++ b/src/Dm8/Eloquent/DmEloquent.php
@@ -6,8 +6,8 @@
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Query\Builder as IlluminateQueryBuilder;
 use LaravelDm8\Dm8\Dm8Connection;
-use LaravelDm8\Dm8\Query\Grammars\OracleGrammar;
-use LaravelDm8\Dm8\Query\OracleBuilder as QueryBuilder;
+use LaravelDm8\Dm8\Query\Grammars\DmGrammar;
+use LaravelDm8\Dm8\Query\DmBuilder as QueryBuilder;
 
 class DmEloquent extends Model
 {
@@ -161,14 +161,14 @@ public function getQualifiedKeyName()
     /**
      * Get a new query builder instance for the connection.
      *
-     * @return \Illuminate\Database\Query\Builder|\Yajra\Oci8\Query\OracleBuilder
+     * @return \Illuminate\Database\Query\Builder|\LaravelDm8\Dm8\Query\DmBuilder
      */
     protected function newBaseQueryBuilder()
     {
         $conn = $this->getConnection();
         $grammar = $conn->getQueryGrammar();
 
-        if ($grammar instanceof OracleGrammar) {
+        if ($grammar instanceof DmGrammar) {
             return new QueryBuilder($conn, $grammar, $conn->getPostProcessor());
         }
 
diff --git a/src/Dm8/Query/DmBuilder.php b/src/Dm8/Query/DmBuilder.php
index 198cb17..7909af6 100644
--- a/src/Dm8/Query/DmBuilder.php
+++ b/src/Dm8/Query/DmBuilder.php
@@ -2,7 +2,10 @@
 
 namespace LaravelDm8\Dm8\Query;
 
+use Closure;
 use Illuminate\Contracts\Support\Arrayable;
+use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
+use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Database\Query\Builder;
 use Illuminate\Database\Query\Expression;
 
@@ -70,14 +73,14 @@ public function getCountForPagination($columns = ['*'])
      */
     public function insertLob(array $values, array $binaries, $sequence = 'id')
     {
-        /** @var \Yajra\Oci8\Query\Grammars\OracleGrammar $grammar */
+        /** @var \LaravelDm8\Dm8\Query\Grammars\DmGrammar $grammar */
         $grammar = $this->grammar;
         $sql = $grammar->compileInsertLob($this, $values, $binaries, $sequence);
 
         $values = $this->cleanBindings($values);
         $binaries = $this->cleanBindings($binaries);
 
-        /** @var \Yajra\Oci8\Query\Processors\OracleProcessor $processor */
+        /** @var \LaravelDm8\Dm8\Query\Processors\DmProcessor $processor */
         $processor = $this->processor;
 
         return $processor->saveLob($this, $sql, $values, $binaries);
@@ -95,14 +98,14 @@ public function updateLob(array $values, array $binaries, $sequence = 'id')
     {
         $bindings = array_values(array_merge($values, $this->getBindings()));
 
-        /** @var \Yajra\Oci8\Query\Grammars\OracleGrammar $grammar */
+        /** @var \LaravelDm8\Dm8\Query\Grammars\DmGrammar $grammar */
         $grammar = $this->grammar;
         $sql = $grammar->compileUpdateLob($this, $values, $binaries, $sequence);
 
         $values = $this->cleanBindings($bindings);
         $binaries = $this->cleanBindings($binaries);
 
-        /** @var \Yajra\Oci8\Query\Processors\OracleProcessor $processor */
+        /** @var \LaravelDm8\Dm8\Query\Processors\DmProcessor $processor */
         $processor = $this->processor;
 
         return $processor->saveLob($this, $sql, $values, $binaries);
@@ -117,7 +120,7 @@ public function updateLob(array $values, array $binaries, $sequence = 'id')
      * @param  mixed  $values
      * @param  string  $boolean
      * @param  bool  $not
-     * @return \Illuminate\Database\Query\Builder|\Yajra\Oci8\Query\OracleBuilder
+     * @return \Illuminate\Database\Query\Builder|\LaravelDm8\Dm8\Query\DmBuilder
      */
     public function whereIn($column, $values, $boolean = 'and', $not = false)
     {
@@ -148,15 +151,23 @@ public function whereIn($column, $values, $boolean = 'and', $not = false)
      */
     protected function runSelect()
     {
+        $expression = $this->toSql();
+        if (strpos($expression, ' group_concat(') !== false) {
+            $expression = str_replace(' group_concat(', ' wm_concat(', $expression);
+        }
+        if (strpos($expression, ' GROUP_CONCAT(') !== false) {
+            $expression = str_replace(' GROUP_CONCAT(', ' WM_CONCAT(', $expression);
+        }
+
         if ($this->lock) {
             $this->connection->beginTransaction();
-            $result = $this->connection->select($this->toSql(), $this->getBindings(), ! $this->useWritePdo);
+            $result = $this->connection->select($expression, $this->getBindings(), ! $this->useWritePdo);
             $this->connection->commit();
 
             return $result;
         }
 
-        return $this->connection->select($this->toSql(), $this->getBindings(), ! $this->useWritePdo);
+        return $this->connection->select($expression, $this->getBindings(), ! $this->useWritePdo);
     }
 
     /**
@@ -260,4 +271,30 @@ public function clone()
     {
         return clone $this;
     }
+
+
+    /**
+     * Add a new "raw" select expression to the query.
+     * 达梦函数转化
+     *
+     * @param  string  $expression
+     * @param  array  $bindings
+     * @return $this
+     */
+    public function selectRaw($expression, array $bindings = [])
+    {
+        if (strpos($expression, ' group_concat(') !== false) {
+            $expression = str_replace(' group_concat(', ' wm_concat(', $expression);
+        }
+        if (strpos($expression, ' GROUP_CONCAT(') !== false) {
+            $expression = str_replace(' GROUP_CONCAT(', ' WM_CONCAT(', $expression);
+        }
+        $this->addSelect(new Expression($expression));
+
+        if ($bindings) {
+            $this->addBinding($bindings, 'select');
+        }
+
+        return $this;
+    }
 }
diff --git a/src/Dm8/Query/Grammars/DmGrammar.php b/src/Dm8/Query/Grammars/DmGrammar.php
index 2f735c1..5b8666f 100644
--- a/src/Dm8/Query/Grammars/DmGrammar.php
+++ b/src/Dm8/Query/Grammars/DmGrammar.php
@@ -233,7 +233,7 @@ public function wrapTable($table)
         $tableName = $this->wrap($this->tablePrefix.$table, true);
         $segments = explode(' ', $table);
         if (count($segments) > 1) {
-            $tableName = $this->wrap($this->tablePrefix.$segments[0]).' '.$segments[1];
+            $tableName = $this->wrap($this->tablePrefix.$segments[0]).' ' . $this->tablePrefix . $segments[1];
         }
 
         return $this->getSchemaPrefix().$tableName;
@@ -282,23 +282,23 @@ protected function wrapValue($value)
      * @param  string  $sequence
      * @return string
      */
-    public function compileInsertGetId(Builder $query, $values, $sequence = 'id')
-    {
-        if (empty($sequence)) {
-            $sequence = 'id';
-        }
+     public function compileInsertGetId(Builder $query, $values, $sequence = 'id')
+     {
+         if (empty($sequence)) {
+             $sequence = 'id';
+         }
 
-        $backtrace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 4)[2]['object'];
+         $backtrace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 4)[2]['object'];
 
-        if ($backtrace instanceof EloquentBuilder) {
-            $model = $backtrace->getModel();
-            if ($model->sequence && ! isset($values[$model->getKeyName()]) && $model->incrementing) {
-                $values[$sequence] = null;
-            }
-        }
+         if ($backtrace instanceof EloquentBuilder) {
+             $model = $backtrace->getModel();
+             if ($model->sequence && ! isset($values[$model->getKeyName()]) && $model->incrementing) {
+                 $values[$sequence] = null;
+             }
+         }
 
-        return $this->compileInsert($query, $values).' returning '.$this->wrap($sequence).' into ?';
-    }
+         return $this->compileInsert($query, $values).' returning '.$this->wrap($sequence).' into ?';
+     }
 
     /**
      * Compile an insert statement into SQL.
@@ -590,4 +590,24 @@ protected function compileUnionAggregate(Builder $query)
 
         return $sql.' from ('.$this->compileSelect($query).') '.$this->wrapTable('temp_table');
     }
+
+    /**
+     * Prepare the bindings for an update statement.
+     *
+     * Booleans, integers, and doubles are inserted into JSON updates as raw values.
+     *
+     * @param  array  $bindings
+     * @param  array  $values
+     * @return array
+     */
+    public function prepareBindingsForUpdate(array $bindings, array $values)
+    {
+        $values = collect($values)->reject(function ($value, $column) {
+            return $this->isJsonSelector($column) && is_bool($value);
+        })->map(function ($value) {
+            return is_array($value) ? json_encode($value) : $value;
+        })->all();
+
+        return parent::prepareBindingsForUpdate($bindings, $values);
+    }
 }
diff --git a/src/Dm8/Query/Processors/DmProcessor.php b/src/Dm8/Query/Processors/DmProcessor.php
index afd661a..82b85e7 100644
--- a/src/Dm8/Query/Processors/DmProcessor.php
+++ b/src/Dm8/Query/Processors/DmProcessor.php
@@ -19,25 +19,26 @@ class DmProcessor extends Processor
      * @param  string  $sequence
      * @return int
      */
-    public function processInsertGetId(Builder $query, $sql, $values, $sequence = null)
-    {
-        $connection = $query->getConnection();
+     public function processInsertGetId(Builder $query, $sql, $values, $sequence = null)
+     {
+         $connection = $query->getConnection();
 
-        $connection->recordsHaveBeenModified();
-        $start = microtime(true);
+         $connection->recordsHaveBeenModified();
+         $start = microtime(true);
 
-        $id = 0;
-        $parameter = 1;
-        $statement = $this->prepareStatement($query, $sql);
-        $values = $this->incrementBySequence($values, $sequence);
-        $parameter = $this->bindValues($values, $statement, $parameter);
-        $statement->bindParam($parameter, $id, PDO::PARAM_INT, -1);
-        $statement->execute();
+         $id = 0;
+         $parameter = 1;
+         $statement = $this->prepareStatement($query, $sql);
+         $values = $this->incrementBySequence($values, $sequence);
+         $parameter = $this->bindValues($values, $statement, $parameter);
+         $statement->bindParam($parameter, $id, PDO::PARAM_INT, -1);
+         $statement->execute();
 
-        $connection->logQuery($sql, $values, $start);
+         $values[] = '?';
+         $connection->logQuery($sql, $values, $start);
 
-        return (int) $id;
-    }
+         return (int) $id;
+     }
 
     /**
      * Get prepared statement.
@@ -48,7 +49,7 @@ public function processInsertGetId(Builder $query, $sql, $values, $sequence = nu
      */
     private function prepareStatement(Builder $query, $sql)
     {
-        /** @var \Yajra\Oci8\Oci8Connection $connection */
+        /** @var \LaravelDm8\Dm8\Dm8Connection $connection */
         $connection = $query->getConnection();
         $pdo = $connection->getPdo();
 
@@ -69,9 +70,9 @@ protected function incrementBySequence(array $values, $sequence)
 
         if (! isset($builderArgs[1][0][$sequence])) {
             if ($builder instanceof EloquentBuilder) {
-                /** @var \Yajra\Oci8\Eloquent\OracleEloquent $model */
+                /** @var \LaravelDm8\Dm8\Eloquent\DmEloquent $model */
                 $model = $builder->getModel();
-                /** @var \Yajra\Oci8\Oci8Connection $connection */
+                /** @var \LaravelDm8\Dm8\Dm8Connection $connection */
                 $connection = $model->getConnection();
                 if ($model->sequence && $model->incrementing) {
                     $values[] = (int) $connection->getSequence()->nextValue($model->sequence);
diff --git a/src/Dm8/Schema/Comment.php b/src/Dm8/Schema/Comment.php
index 03fec00..586814e 100644
--- a/src/Dm8/Schema/Comment.php
+++ b/src/Dm8/Schema/Comment.php
@@ -26,9 +26,9 @@ public function __construct(Connection $connection)
     /**
      * Set table and column comments.
      *
-     * @param  \Yajra\Oci8\Schema\OracleBlueprint  $blueprint
+     * @param  \LaravelDm8\Dm8\Schema\DmBlueprint  $blueprint
      */
-    public function setComments(OracleBlueprint $blueprint)
+    public function setComments(DmBlueprint $blueprint)
     {
         $this->commentTable($blueprint);
 
@@ -41,9 +41,9 @@ public function setComments(OracleBlueprint $blueprint)
      * Run the comment on table statement.
      * Comment set by $table->comment = 'comment';.
      *
-     * @param  \Yajra\Oci8\Schema\OracleBlueprint  $blueprint
+     * @param  \LaravelDm8\Dm8\Schema\DmBlueprint  $blueprint
      */
-    private function commentTable(OracleBlueprint $blueprint)
+    private function commentTable(DmBlueprint $blueprint)
     {
         $table = $this->wrapValue($blueprint->getTable());
 
@@ -67,9 +67,9 @@ protected function wrapValue($value)
      * Add comments set via fluent setter.
      * Comments set by $table->string('column')->comment('comment');.
      *
-     * @param  \Yajra\Oci8\Schema\OracleBlueprint  $blueprint
+     * @param  \LaravelDm8\Dm8\Schema\DmBlueprint  $blueprint
      */
-    private function fluentComments(OracleBlueprint $blueprint)
+    private function fluentComments(DmBlueprint $blueprint)
     {
         foreach ($blueprint->getColumns() as $column) {
             if (isset($column['comment'])) {
@@ -98,9 +98,9 @@ private function commentColumn($table, $column, $comment)
      * Add comments on columns.
      * Comments set by $table->commentColumns = ['column' => 'comment'];.
      *
-     * @param  \Yajra\Oci8\Schema\OracleBlueprint  $blueprint
+     * @param  \LaravelDm8\Dm8\Schema\DmBlueprint  $blueprint
      */
-    private function commentColumns(OracleBlueprint $blueprint)
+    private function commentColumns(DmBlueprint $blueprint)
     {
         foreach ($blueprint->commentColumns as $column => $comment) {
             $this->commentColumn($blueprint->getTable(), $column, $comment);
diff --git a/src/Dm8/Schema/DmAutoIncrementHelper.php b/src/Dm8/Schema/DmAutoIncrementHelper.php
index 57b1fd5..6ce3043 100644
--- a/src/Dm8/Schema/DmAutoIncrementHelper.php
+++ b/src/Dm8/Schema/DmAutoIncrementHelper.php
@@ -13,12 +13,12 @@ class DmAutoIncrementHelper
     protected $connection;
 
     /**
-     * @var \Yajra\Oci8\Schema\Trigger
+     * @var \LaravelDm8\Dm8\Schema\Trigger
      */
     protected $trigger;
 
     /**
-     * @var \Yajra\Oci8\Schema\Sequence
+     * @var \LaravelDm8\Dm8\Schema\Sequence
      */
     protected $sequence;
 
@@ -105,6 +105,7 @@ private function createObjectName($prefix, $table, $col, $type)
      */
     public function dropAutoIncrementObjects($table)
     {
+        return true;
         // drop sequence and trigger object
         $prefix = $this->connection->getTablePrefix();
         // get the actual primary column name from table
diff --git a/src/Dm8/Schema/DmBuilder.php b/src/Dm8/Schema/DmBuilder.php
index c81a5e9..2757712 100644
--- a/src/Dm8/Schema/DmBuilder.php
+++ b/src/Dm8/Schema/DmBuilder.php
@@ -9,12 +9,12 @@
 class DmBuilder extends Builder
 {
     /**
-     * @var \Yajra\Oci8\Schema\OracleAutoIncrementHelper
+     * @var \LaravelDm8\Dm8\Schema\DmAutoIncrementHelper
      */
     public $helper;
 
     /**
-     * @var \Yajra\Oci8\Schema\Comment
+     * @var \LaravelDm8\Dm8\Schema\Comment
      */
     public $comment;
 
@@ -47,7 +47,7 @@ public function create($table, Closure $callback)
 
         $this->comment->setComments($blueprint);
 
-        $this->helper->createAutoIncrementObjects($blueprint, $table);
+        // $this->helper->createAutoIncrementObjects($blueprint, $table);
     }
 
     /**
@@ -59,7 +59,7 @@ public function create($table, Closure $callback)
      */
     protected function createBlueprint($table, Closure $callback = null)
     {
-        $blueprint = new OracleBlueprint($table, $callback);
+        $blueprint = new DmBlueprint($table, $callback);
         $blueprint->setTablePrefix($this->connection->getTablePrefix());
 
         return $blueprint;
@@ -131,7 +131,7 @@ public function dropIfExists($table)
      */
     public function hasTable($table)
     {
-        /** @var \Yajra\Oci8\Schema\Grammars\OracleGrammar $grammar */
+        /** @var \LaravelDm8\Dm8\Schema\Grammars\DmGrammar $grammar */
         $grammar = $this->grammar;
         $sql = $grammar->compileTableExists();
 
@@ -154,7 +154,7 @@ public function getColumnListing($table)
     {
         $database = $this->connection->getConfig('username');
         $table = $this->connection->getTablePrefix().$table;
-        /** @var \Yajra\Oci8\Schema\Grammars\OracleGrammar $grammar */
+        /** @var \LaravelDm8\Dm8\Schema\Grammars\DmGrammar $grammar */
         $grammar = $this->grammar;
         $results = $this->connection->select($grammar->compileColumnExists($database, $table));
 
diff --git a/src/Dm8/Schema/Grammars/DmGrammar.php b/src/Dm8/Schema/Grammars/DmGrammar.php
index 8bf0676..7fa290e 100644
--- a/src/Dm8/Schema/Grammars/DmGrammar.php
+++ b/src/Dm8/Schema/Grammars/DmGrammar.php
@@ -454,6 +454,23 @@ public function compileRenameColumn(Blueprint $blueprint, Fluent $command, Conne
         return (array) $rs;
     }
 
+
+    /**
+     * Compile a table comment command.
+     *
+     * @param  \Illuminate\Database\Schema\Blueprint  $blueprint
+     * @param  \Illuminate\Support\Fluent  $command
+     * @return string
+     */
+    public function compileTableComment(Blueprint $blueprint, Fluent $command)
+    {
+        return sprintf('COMMENT ON TABLE %s is %s',
+            $this->wrapTable($blueprint),
+            "'".str_replace("'", "''", $command->comment)."'"
+        );
+    }
+
+
     /**
      * Create the column definition for a char type.
      *
@@ -528,9 +545,7 @@ protected function typeLongText(Fluent $column)
      */
     protected function typeInteger(Fluent $column)
     {
-        $length = ($column->length) ? $column->length : 10;
-
-        return "number({$length},0)";
+        return 'int';
     }
 
     /**
@@ -541,9 +556,7 @@ protected function typeInteger(Fluent $column)
      */
     protected function typeBigInteger(Fluent $column)
     {
-        $length = ($column->length) ? $column->length : 19;
-
-        return "number({$length},0)";
+        return 'bigint';
     }
 
     /**
@@ -554,9 +567,7 @@ protected function typeBigInteger(Fluent $column)
      */
     protected function typeMediumInteger(Fluent $column)
     {
-        $length = ($column->length) ? $column->length : 7;
-
-        return "number({$length},0)";
+        return 'int';
     }
 
     /**
@@ -567,9 +578,7 @@ protected function typeMediumInteger(Fluent $column)
      */
     protected function typeSmallInteger(Fluent $column)
     {
-        $length = ($column->length) ? $column->length : 5;
-
-        return "number({$length},0)";
+        return 'smallint';
     }
 
     /**
@@ -580,9 +589,7 @@ protected function typeSmallInteger(Fluent $column)
      */
     protected function typeTinyInteger(Fluent $column)
     {
-        $length = ($column->length) ? $column->length : 3;
-
-        return "number({$length},0)";
+        return 'tinyint';
     }
 
     /**
@@ -593,7 +600,7 @@ protected function typeTinyInteger(Fluent $column)
      */
     protected function typeFloat(Fluent $column)
     {
-        return "number({$column->total}, {$column->places})";
+        return $this->typeDouble($column);
     }
 
     /**
@@ -604,7 +611,11 @@ protected function typeFloat(Fluent $column)
      */
     protected function typeDouble(Fluent $column)
     {
-        return "number({$column->total}, {$column->places})";
+        if ($column->total && $column->places) {
+            return "double({$column->total}, {$column->places})";
+        }
+
+        return 'double';
     }
 
     /**
@@ -615,7 +626,7 @@ protected function typeDouble(Fluent $column)
      */
     protected function typeDecimal(Fluent $column)
     {
-        return "number({$column->total}, {$column->places})";
+        return "decimal({$column->total}, {$column->places})";
     }
 
     /**
@@ -626,7 +637,7 @@ protected function typeDecimal(Fluent $column)
      */
     protected function typeBoolean(Fluent $column)
     {
-        return 'char(1)';
+        return 'tinyint(1)';
     }
 
     /**
@@ -813,6 +824,7 @@ protected function modifyIncrement(Blueprint $blueprint, Fluent $column)
     {
         if (in_array($column->type, $this->serials) && $column->autoIncrement) {
             $blueprint->primary($column->name);
+            return ' auto_increment';
         }
     }
 
diff --git a/src/Dm8/Schema/Sequence.php b/src/Dm8/Schema/Sequence.php
index 6787c47..925aab4 100644
--- a/src/Dm8/Schema/Sequence.php
+++ b/src/Dm8/Schema/Sequence.php
@@ -7,7 +7,7 @@
 class Sequence
 {
     /**
-     * @var \Illuminate\Database\Connection|\Yajra\Oci8\Oci8Connection
+     * @var \Illuminate\Database\Connection|\LaravelDm8\Dm8\Dm8Connection
      */
     protected $connection;
 
diff --git a/src/Dm8/Schema/Trigger.php b/src/Dm8/Schema/Trigger.php
index b8f64eb..83bcac6 100644
--- a/src/Dm8/Schema/Trigger.php
+++ b/src/Dm8/Schema/Trigger.php
@@ -11,7 +11,7 @@ class Trigger
     use Dm8ReservedWords;
 
     /**
-     * @var \Illuminate\Database\Connection|\Yajra\Oci8\Oci8Connection
+     * @var \Illuminate\Database\Connection|\LaravelDm8\Dm8\Dm8Connection
      */
     protected $connection;
 
diff --git a/src/Dm8/Validation/Dm8DatabasePresenceVerifier.php b/src/Dm8/Validation/Dm8DatabasePresenceVerifier.php
index 4cba752..13efb7c 100755
--- a/src/Dm8/Validation/Dm8DatabasePresenceVerifier.php
+++ b/src/Dm8/Validation/Dm8DatabasePresenceVerifier.php
@@ -18,20 +18,20 @@ class Dm8DatabasePresenceVerifier extends DatabasePresenceVerifier
      * @param  array  $extra
      * @return int
      */
-    public function getCount($collection, $column, $value, $excludeId = null, $idColumn = null, array $extra = [])
-    {
-        $connection = $this->table($collection)->getConnection();
-
-        if (! $connection instanceof Dm8Connection) {
-            return parent::getCount($collection, $column, $value, $excludeId, $idColumn, $extra);
-        }
-
-        $connection->useCaseInsensitiveSession();
-        $count = parent::getCount($collection, $column, $value, $excludeId, $idColumn, $extra);
-        $connection->useCaseSensitiveSession();
-
-        return $count;
-    }
+//    public function getCount($collection, $column, $value, $excludeId = null, $idColumn = null, array $extra = [])
+//    {
+//        $connection = $this->table($collection)->getConnection();
+//
+//        if (! $connection instanceof Dm8Connection) {
+//            return parent::getCount($collection, $column, $value, $excludeId, $idColumn, $extra);
+//        }
+//
+//        $connection->useCaseInsensitiveSession();
+//        $count = parent::getCount($collection, $column, $value, $excludeId, $idColumn, $extra);
+//        $connection->useCaseSensitiveSession();
+//
+//        return $count;
+//    }
 
     /**
      * Count the number of objects in a collection with the given values.
@@ -42,18 +42,18 @@ public function getCount($collection, $column, $value, $excludeId = null, $idCol
      * @param  array  $extra
      * @return int
      */
-    public function getMultiCount($collection, $column, array $values, array $extra = [])
-    {
-        $connection = $this->table($collection)->getConnection();
-
-        if (! $connection instanceof Dm8Connection) {
-            return parent::getMultiCount($collection, $column, $values, $extra);
-        }
-
-        $connection->useCaseInsensitiveSession();
-        $count = parent::getMultiCount($collection, $column, $values, $extra);
-        $connection->useCaseSensitiveSession();
-
-        return $count;
-    }
+//    public function getMultiCount($collection, $column, array $values, array $extra = [])
+//    {
+//        $connection = $this->table($collection)->getConnection();
+//
+//        if (! $connection instanceof Dm8Connection) {
+//            return parent::getMultiCount($collection, $column, $values, $extra);
+//        }
+//
+//        $connection->useCaseInsensitiveSession();
+//        $count = parent::getMultiCount($collection, $column, $values, $extra);
+//        $connection->useCaseSensitiveSession();
+//
+//        return $count;
+//    }
 }