mongodb怎样分库

$where = array();

if( $product_id )

{

    $where['lq_product_id'] = $product_id;

}

if( $qrcode )

{

    $where['lq_qrcode'] = $qrcode;

   //$where['lq_qrcode'] ="75906.DRMWH.A.13_50.N";

}

if( $lq_user)

{

   $where['lq_user'] = $lq_user;

}

$page_list_num = 100;

$cls_log = cls_app:: get_cls( 'log' );

$cls_log->set_collection( 'log_data' );

$list = $cls_log->get_list( $page, $page_list_num, $where, array( 'lq_time'=> -1 ) );

//去历史里拉数据

$cls_log_his = new cls_log ( 'bullfrog_history' );

$cls_log_his -> set_db( 'log' );

$cls_log_his -> set_collection( 'log_data_201904062230' );

$list_his = $cls_log_his->get_list( $page, $page_list_num, $where, array( 'lq_time'=> -1 ) );

$list_all = array_merge( $list, $list_his );