Joignez-vous à des tables quand une colonne a un préfixe

Question

Ceci est ma table "produit" WHERE sku RLIKE 'IP-205-1067-16' or sku IN ('205-d-SC55G','205-d-RC099G','205-d-SC45G','205-d-RC099G'):

+---------------------------+---------+-----------------------+-----------------------+-------------------------+----------------------------+ 
|   sku   | price_1 | full_color_imprint_id | embroidery_imprint_id | screen_print_imprint_id | laser_engraving_imprint_id | 
+---------------------------+---------+-----------------------+-----------------------+-------------------------+----------------------------+ 
| IP-205-1067-16   | 1.55556 | NULL     | NULL     | 63276     | 32539      | 
| IP-205-1067-16-39423495 | 1.55556 | NULL     | NULL     | 63276     | 32539      | 
| IP-205-1067-16-1272347 | 1.55556 | NULL     | NULL     | 63276     | 32539      | 
| IP-205-1067-16-56185  | 1.55556 | NULL     | NULL     | 63276     | 32539      | 
| IP-205-1067-16-1706399150 | 1.55556 | NULL     | NULL     | 63276     | 32539      | 
| 205-d-SC45G    | 45  | NULL     | NULL     | NULL     | NULL      | 
| 205-d-SC55G    | 55  | NULL     | NULL     | NULL     | NULL      | 
| 205-d-RC059G    | 0.59 | NULL     | NULL     | NULL     | NULL      | 
| 205-d-RC099G    | 0.99 | NULL     | NULL     | NULL     | NULL      | 
+---------------------------+---------+-----------------------+-----------------------+-------------------------+----------------------------+ 

Ceci est ma table "imprint_locations" WHERE imprint_method_id IN (63276,32539):

+--------+-------------------+------------+-------------+--------------+ 
| id | imprint_method_id | name | setup_sku | running_sku | 
+--------+-------------------+------------+-------------+--------------+ 
| 809128 |    32539 | Body Right | 205-d-SC45G | 205-d-RC059G | 
| 809129 |    32539 | Body Left | 205-d-SC45G | 205-d-RC059G | 
| 808288 |    63276 | Body Right | 205-d-SC55G | 205-d-RC099G | 
| 808289 |    63276 | Body Left | 205-d-SC55G | 205-d-RC099G 
+--------+-------------------+------------+-------------+--------------+ 

Ceci est le résultat final I » m essayant d'atteindre:

+---------------------------+-----------------------------------------+-------------------------------------------+-------------------------------------------+---------------------------------------------+----------------------------------------------+------------------------------------------------+ 
|   sku   | embroidery_imprint_id_setup_sku_price_1 | embroidery_imprint_id_running_sku_price_1 | screen_print_imprint_id_setup_sku_price_1 | screen_print_imprint_id_running_sku_price_1 | laser_engraving_imprint_id_setup_sku_price_1 | laser_engraving_imprint_id_running_sku_price_1 | 
+---------------------------+-----------------------------------------+-------------------------------------------+-------------------------------------------+---------------------------------------------+----------------------------------------------+------------------------------------------------+ 
| IP-205-1067-16   | NULL         | NULL          |          55 | 0.99          |           45 | 0.59           | 
| IP-205-1067-16-39423495 | NULL         | NULL          |          55 | 0.99          |           45 | 0.59           | 
| IP-205-1067-16-1272347 | NULL         | NULL          |          55 | 0.99          |           45 | 0.59           | 
| IP-205-1067-16-56185  | NULL         | NULL          |          55 | 0.99          |           45 | 0.59           | 
| IP-205-1067-16-1706399150 | NULL         | NULL          |          55 | 0.99          |           45 | 0.59           | 
+---------------------------+-----------------------------------------+-------------------------------------------+-------------------------------------------+---------------------------------------------+----------------------------------------------+------------------------------------------------+ 

Vous pouvez voir que la table de produit a screen_print_im print_id qui correspond à l'attribut imprint_method_id dans la table imprint_locations.

Answer 1

Vous devez joindre deux fois le tableau product en utilisant la table imprint_locations comme table de relations intermédiaires.

Vous pouvez utiliser une jointure distincte pour chaque champ d'ID que vous souhaitez lier, ou vous pouvez utiliser une méthode de MySQL pivot table pour vous joindre une seule fois et faire pivoter les prix dans les colonnes appropriées.

SELECT DISTINCT p1.sku, 
    MAX(IF(p1.embroidery_imprint_id = l.imprint_method_id AND p2.sku = l.setup_sku, p2.price_1, NULL)) AS embroidery_imprint_id_setup_sku_price_1, 
    MAX(IF(p1.embroidery_imprint_id = l.imprint_method_id AND p2.sku = l.running_sku, p2.price_1, NULL)) AS embroidery_imprint_id_running_sku_price_1, 
    MAX(IF(p1.screen_print_imprint_id = l.imprint_method_id AND p2.sku = l.setup_sku, p2.price_1, NULL)) AS screen_print_imprint_id_setup_sku_price_1, 
    MAX(IF(p1.screen_print_imprint_id = l.imprint_method_id AND p2.sku = l.running_sku, p2.price_1, NULL)) AS screen_print_imprint_id_running_sku_price_1, 
    MAX(IF(p1.laser_engraving_imprint_id = l.imprint_method_id AND p2.sku = l.setup_sku, p2.price_1, NULL)) AS laser_engraving_imprint_id_setup_sku_price_1, 
    MAX(IF(p1.laser_engraving_imprint_id = l.imprint_method_id AND p2.sku = l.running_sku, p2.price_1, NULL)) AS laser_engraving_imprint_id_running_sku_price_1 
FROM product AS p1 
JOIN imprint_locations AS l ON l.imprint_method_id IN (p1.embroidery_imprint_id, p1.screen_print_imprint_id, p1.laser_engraving_imprint_id) 
JOIN product AS p2 ON p2.sku IN (l.running_sku, l.setup_sku) 
GROUP BY p1.sku 

DEMO