Add raw column method

Author: Wazabii

AbstractDB.php

@@ -109,6 +109,9 @@ public function getTable(bool $withAlias = false): string
      */
     public function getColumns(): array
     {
+        if(is_string($this->columns)) {
+            return explode(",", $this->columns);
+        }
         if (!is_null($this->mig) && !$this->mig->columns($this->columns)) {
             throw new DBValidationException($this->mig->getMessage(), 1);
         }

DB.php

@@ -275,12 +275,28 @@ protected function showView(): self
         return $this;
     }
 
-    public function columns(...$columns)
+    /**
+     * Select protected mysql columns
+     * @param  string $columns
+     * @return self
+     */
+    public function columns(...$columns): self
     {
         $this->columns = $this->prepArr($columns, false);
         return $this;
     }
 
+    /**
+     * Select unprotected mysql columns
+     * @param  string $columns
+     * @return self
+     */
+    public function columnsRaw(string $columns): self
+    {
+        $this->columns = $columns;
+        return $this;
+    }
+
     /**
      * Change where compare operator from default "=".
      * Will change back to default after where method is triggered