У меня есть 2 таблицы: wp_new_comissions и wp_woocommerce_order_items, и мне нужно получить некоторую информацию, соответствующую этим 2 таблицам.
wp_new_comissions имеет следующие данные:
comission_id user_id order_id item_order_id item_value item_liquid_value item_seller comission_percent comission
286 606 14580 2120 79.9 71.91 606 15 10.79
291 606 14626 2127 79.9 71.91 606 15 10.79
309 717 16830 2401 89.9 80.91 717 10 8.09
312 717 16895 2430 89.9 80.91 717 10 8.09
319 717 17008 2475 89.9 80.91 717 10 8.09
330 606 18052 2613 79.9 71.91 606 15 10.79
822 606 14032 1971 76.42 68.78 606 15 10.32
823 606 14039 1977 76.42 68.78 606 15 10.32
824 606 14052 1980 67.92 61.13 606 15 9.17
826 606 14160 1986 55.93 50.34 606 15 7.55
827 606 14166 1993 55.93 50.34 606 15 7.55
828 606 14166 1994 62.93 56.64 606 15 8.5
829 606 14194 2005 55.93 50.34 606 15 7.55
868 606 15208 2132 67.92 61.12 606 15 9.17
869 606 15208 2133 67.92 61.12 606 15 9.17
900 606 15262 2261 89.9 80.91 606 15 12.14
911 606 15747 2297 79.9 71.91 606 15 10.79
947 717 16825 2399 89.9 80.91 717 10 8.09
950 717 16873 2418 89.9 80.91 717 10 8.09
951 717 16873 2419 89.9 80.91 717 10 8.09
974 717 17449 2521 89.9 80.91 717 10 8.09
978 717 17523 2533 89.9 80.91 717 10 8.09
1070 717 20757 2803 89.9 80.91 717 10 8.09
wp_woocommerce_order_items имеет следующие данные:
order_item_id order_item_name order_item_type order_id
1971 CAMISA Live to Race line_item 14032
1973 valeapena coupon 14032
1977 CAMISA Bia Brasil line_item 14039
1979 valeapena coupon 14039
1980 Carrinho Bia Figueiredo line_item 14052
1982 valeapena coupon 14052
1986 Carrinho Bia Figueiredo line_item 14160
1988 valeapena coupon 14160
1993 Boné Bia Figueiredo line_item 14166
1994 CAMISA Bia Brasil line_item 14166
1996 valeapena coupon 14166
2005 Boné Bia Figueiredo line_item 14194
2007 valeapena coupon 14194
2120 Boné Bia Figueiredo line_item 14580
2121 Pulseira Pilhado line_item 14580
2127 Boné Bia Figueiredo line_item 14626
2132 Boné Bia Figueiredo line_item 15208
2133 Boné Bia Figueiredo line_item 15208
2135 atletapresente coupon 15208
2261 CAMISA Girl Power line_item 15262
2297 Carrinho Bia Figueiredo line_item 15747
2399 CAMISA Eu escolho ser campeão line_item 16825
2401 CAMISA Eu escolho ser campeão line_item 16830
2418 CAMISA Eu escolho ser campeão line_item 16873
2419 CAMISA Eu escolho ser campeão line_item 16873
2430 CAMISA Eu escolho ser campeão line_item 16895
2475 CAMISA Eu escolho ser campeão line_item 17008
2521 CAMISA Eu escolho ser campeão line_item 17449
2533 CAMISA Eu escolho ser campeão line_item 17523
2613 Boné Bia Figueiredo line_item 18052
2803 CAMISA Eu escolho ser campeão line_item 20757
Я выполняю followin SQL:
SELECT
c.comission_id as `ID`, c.user_id as `ID Seller`,
c.order_id as `Núm. Pedido`, c.item_order_id as `Item ID`,
(CASE i.order_item_id WHEN c.item_order_id
THEN i.order_item_name END) as `Item`,
c.item_value as `Total Linha`,
c.item_liquid_value as `Total Líquido`,
c.item_seller as `ID Seller Item`,
c.comission_percent as `Comissão (%)`,
c.comission as `Comissão (R$)`,
GROUP_CONCAT((CASE WHEN i.order_item_type = 'coupon'
THEN i.order_item_name END) SEPARATOR ', ')
as `CUPOM`
FROM `wp_new_comissions` c
RIGHT OUTER JOIN `wp_woocommerce_order_items` i
on c.order_id = i.order_id
where c.user_id = 606 group by c.item_order_id
и возвращаю данные:
Почему когда у меня есть 2 Order_Item_id (ITEM ID), относящиеся к одному и тому же идентификатору заказа (Num. Pedido), Order_item_name (Item) возвращает NULL? он должен вернуть order_item_name в таблице wp_woocommerce_order_items с тем же order_item_id.