>SELECT sum(m.rgcur), sum(t.tax_cur), sum(h.hours) >FROM py_ehmast m > INNER JOIN ( > SELECT ehmast_id, sum(tax_cur) AS tax_cur FROM py_ehtax GROUP BY ehmast_id > ) t > ON m.ehmast_id = t.ehmast_id > INNER JOIN ( > (SELECT ehmast_id, sum(hours) AS hours FROM py_ehhour GROUP BY h.ehmast_id > ) h > ON m.ehmast_id = h.ehmast_id >GROUP BY ee_id >