protected $weav_db;
protected $weav_material_price_db;
/**
* test
*/
public function Index($value='')
{
//测试查询条件是否累计
$this->weav_material_price_db = Db::table('weav_material_price');
$data = $this->weav_material_price_db->where(['material_name'=>'9UM'])->value('material_price');
$data1 = $this->weav_material_price_db->where(['material_name'=>'DE75'])->value('material_price');
dump($data);
dump($data1);

}