1055 Expression #2 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'mi039208_eraevva.pov.products_options_values_sort_order' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
in:
[SELECT count(DISTINCT p2a.products_id) as quantity, po.products_options_name, pov.products_options_values_name, SUM(IF(p2a.products_id IN(2896,2927,2897,2940,2900,2955,2901,2956,2903,2904,2851,2906,2867,2923), 1, 0)) as flag FROM products_attributes p2a JOIN products_options po ON p2a.options_id = po.products_options_id JOIN products_options_values pov ON p2a.options_values_id = pov.products_options_values_id WHERE po.products_options_id>2 and p2a.products_id IN (2851,2867,2896,2897,2900,2901,2903,2904,2906,2923,2927,2940,2955,2956) GROUP BY po.products_options_name, pov.products_options_values_name ORDER BY po.products_options_name, pov.products_options_values_sort_order]