diff --git a/src/QueryDataTable.php b/src/QueryDataTable.php
index 083eeb64..6322157f 100644
--- a/src/QueryDataTable.php
+++ b/src/QueryDataTable.php
@@ -690,7 +690,11 @@ protected function getNullsLastSql($column, $direction)
     {
         $sql = $this->config->get('datatables.nulls_last_sql', '%s %s NULLS LAST');
 
-        return sprintf($sql, $column, $direction);
+        return str_replace(
+            [':column', ':direction'],
+            [$column, $direction],
+            sprintf($sql, $column, $direction)
+        );
     }
 
     /**
diff --git a/src/config/datatables.php b/src/config/datatables.php
index 9d8c4212..ed2e36f7 100644
--- a/src/config/datatables.php
+++ b/src/config/datatables.php
@@ -4,17 +4,17 @@
     /*
      * DataTables search options.
      */
-    'search' => [
+    'search'         => [
         /*
          * Smart search will enclose search keyword with wildcard string "%keyword%".
          * SQL: column LIKE "%keyword%"
          */
-        'smart' => true,
+        'smart'            => true,
 
         /*
          * Multi-term search will explode search keyword using spaces resulting into multiple term search.
          */
-        'multi_term' => true,
+        'multi_term'       => true,
 
         /*
          * Case insensitive will search the keyword in lower case format.
@@ -26,29 +26,29 @@
          * Wild card will add "%" in between every characters of the keyword.
          * SQL: column LIKE "%k%e%y%w%o%r%d%"
          */
-        'use_wildcards' => false,
+        'use_wildcards'    => false,
 
         /*
          * Perform a search which starts with the given keyword.
          * SQL: column LIKE "keyword%"
          */
-        'starts_with'    => false,
+        'starts_with'      => false,
     ],
 
     /*
      * DataTables internal index id response column name.
      */
-    'index_column' => 'DT_RowIndex',
+    'index_column'   => 'DT_RowIndex',
 
     /*
      * List of available builders for DataTables.
      * This is where you can register your custom dataTables builder.
      */
-    'engines' => [
-        'eloquent'                    => \Yajra\DataTables\EloquentDataTable::class,
-        'query'                       => \Yajra\DataTables\QueryDataTable::class,
-        'collection'                  => \Yajra\DataTables\CollectionDataTable::class,
-        'resource'                    => \Yajra\DataTables\ApiResourceDataTable::class,
+    'engines'        => [
+        'eloquent'   => Yajra\DataTables\EloquentDataTable::class,
+        'query'      => Yajra\DataTables\QueryDataTable::class,
+        'collection' => Yajra\DataTables\CollectionDataTable::class,
+        'resource'   => Yajra\DataTables\ApiResourceDataTable::class,
     ],
 
     /*
@@ -56,7 +56,7 @@
      * This is where you can override which engine a builder should use
      * Note, only change this if you know what you are doing!
      */
-    'builders' => [
+    'builders'       => [
         //Illuminate\Database\Eloquent\Relations\Relation::class => 'eloquent',
         //Illuminate\Database\Eloquent\Builder::class            => 'eloquent',
         //Illuminate\Database\Query\Builder::class               => 'query',
@@ -64,10 +64,10 @@
     ],
 
     /*
-     * Nulls last sql pattern for Posgresql & Oracle.
-     * For MySQL, use '-%s %s'
+     * Nulls last sql pattern for PostgreSQL & Oracle.
+     * For MySQL, use 'CASE WHEN :column IS NULL THEN 1 ELSE 0 END, :column :direction'
      */
-    'nulls_last_sql' => '%s %s NULLS LAST',
+    'nulls_last_sql' => ':column :direction NULLS LAST',
 
     /*
      * User friendly message to be displayed on user if error occurs.
@@ -76,28 +76,28 @@
      * 'throw'          - Throws a \Yajra\DataTables\Exceptions\Exception. Use your custom error handler if needed.
      * 'custom message' - Any friendly message to be displayed to the user. You can also use translation key.
      */
-    'error' => env('DATATABLES_ERROR', null),
+    'error'          => env('DATATABLES_ERROR', null),
 
     /*
      * Default columns definition of dataTable utility functions.
      */
-    'columns' => [
+    'columns'        => [
         /*
          * List of columns hidden/removed on json response.
          */
-        'excess' => ['rn', 'row_num'],
+        'excess'    => ['rn', 'row_num'],
 
         /*
          * List of columns to be escaped. If set to *, all columns are escape.
          * Note: You can set the value to empty array to disable XSS protection.
          */
-        'escape' => '*',
+        'escape'    => '*',
 
         /*
          * List of columns that are allowed to display html content.
          * Note: Adding columns to list will make us available to XSS attacks.
          */
-        'raw' => ['action'],
+        'raw'       => ['action'],
 
         /*
          * List of columns are are forbidden from being searched/sorted.
@@ -114,7 +114,7 @@
     /*
      * JsonResponse header and options config.
      */
-    'json' => [
+    'json'           => [
         'header'  => [],
         'options' => 0,
     ],