How can I convert many statement mysql dinamis to laravel eloquent?

Mysql query like this :

SET @sql_dinamis = (
        SELECT
            GROUP_CONCAT( DISTINCT CONCAT('SUM( IF(id_barang=',id_barang,',jml_bk,0)) AS br',id_barang))
        FROM barang_keluar
    );

    SET @SQL = CONCAT('SELECT month(tgl_keluar) as m,',@sql_dinamis,' 
           FROM barang_keluar
           WHERE month(tgl_keluar) and year(tgl_keluar)=2019
           GROUP BY month(tgl_keluar)'
       );

PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

I want to convert it to laravel eloquent, but i'm confused. Because there exist many statement. There exist PREPARE, EXECUTE, SET, DEALLOCATE etc. You can see query above

How can I convert it to laravel eloquent?

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