Tôi sẽ bắt đầu bằng cách nói rằng bạn thực sự cần phải chuẩn hóa cơ sở dữ liệu của mình. Nhưng đó là một câu hỏi khác. Trong thời gian chờ đợi, bạn có thể sử dụng truy vấn này. Tôi chỉ hiển thị nó cho bốn thành phần, bạn sẽ cần phải mở rộng nó lên 15 cho trường hợp của bạn.
SELECT *
FROM barbot_drinks d
WHERE (ingredient_1_dispenser = '' OR
EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_1_dispenser AND i.ingredient_code = d.ingredient_1_code)) AND
(ingredient_2_dispenser = '' OR
EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_2_dispenser AND i.ingredient_code = d.ingredient_2_code)) AND
(ingredient_3_dispenser = '' OR
EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_3_dispenser AND i.ingredient_code = d.ingredient_3_code)) AND
(ingredient_4_dispenser = '' OR
EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_4_dispenser AND i.ingredient_code = d.ingredient_4_code))
Với dữ liệu mẫu của bạn, điều này tạo ra kết quả sau:
id drink_id drink_name drink_image drink_desc ingredient_1_dispenser ingredient_1_code ingredient_1_dosage ingredient_2_dispenser ingredient_2_code ingredient_2_dosage ingredient_3_dispenser ingredient_3_code ingredient_3_dosage ingredient_4_dispenser ingredient_4_code ingredient_4_dosage
1 vdk_org Screw Driver screw_driver.jpg Screw Driver description... bottle vdk 1 valve oj 2000
2 vdk_cran Cape Cod cape_cod.jpg Cape Cod description... bottle vdk 1 valve cbj 2000
3 dry_mrtn Dry Martini dry_martini.jpg Dry Martini description... bottle vdk 2.5 bottle vrmth .5 valve orgbit 200
Chỉnh sửa
Dựa trên các cuộc thảo luận có phần mở rộng với OP, truy vấn đã được tinh chỉnh như bên dưới. Truy vấn này yêu cầu tất cả các thiết bị phân phối, mã và liều lượng phải có cho mỗi thành phần trong thức uống. SQLFiddle có sẵn.
SELECT *
FROM barbot_drinks d
WHERE (ingredient_1_dispenser = '' AND ingredient_1_code = '' AND ingredient_1_dosage = '' OR
ingredient_1_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_1_dispenser AND i.ingredient_code = d.ingredient_1_code)) AND
(ingredient_2_dispenser = '' AND ingredient_2_code = '' AND ingredient_2_dosage = '' OR
ingredient_2_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_2_dispenser AND i.ingredient_code = d.ingredient_2_code)) AND
(ingredient_3_dispenser = '' AND ingredient_3_code = '' AND ingredient_3_dosage = '' OR
ingredient_3_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_3_dispenser AND i.ingredient_code = d.ingredient_3_code)) AND
(ingredient_4_dispenser = '' AND ingredient_4_code = '' AND ingredient_4_dosage = '' OR
ingredient_4_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_4_dispenser AND i.ingredient_code = d.ingredient_4_code)) AND
(ingredient_5_dispenser = '' AND ingredient_5_code = '' AND ingredient_5_dosage = '' OR
ingredient_5_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_5_dispenser AND i.ingredient_code = d.ingredient_5_code)) AND
(ingredient_6_dispenser = '' AND ingredient_6_code = '' AND ingredient_6_dosage = '' OR
ingredient_6_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_6_dispenser AND i.ingredient_code = d.ingredient_6_code)) AND
(ingredient_7_dispenser = '' AND ingredient_7_code = '' AND ingredient_7_dosage = '' OR
ingredient_7_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_7_dispenser AND i.ingredient_code = d.ingredient_7_code)) AND
(ingredient_8_dispenser = '' AND ingredient_8_code = '' AND ingredient_8_dosage = '' OR
ingredient_8_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_8_dispenser AND i.ingredient_code = d.ingredient_8_code)) AND
(ingredient_9_dispenser = '' AND ingredient_9_code = '' AND ingredient_9_dosage = '' OR
ingredient_9_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_9_dispenser AND i.ingredient_code = d.ingredient_9_code)) AND
(ingredient_10_dispenser = '' AND ingredient_10_code = '' AND ingredient_10_dosage = '' OR
ingredient_10_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_10_dispenser AND i.ingredient_code = d.ingredient_10_code)) AND
(ingredient_11_dispenser = '' AND ingredient_11_code = '' AND ingredient_11_dosage = '' OR
ingredient_11_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_11_dispenser AND i.ingredient_code = d.ingredient_11_code)) AND
(ingredient_12_dispenser = '' AND ingredient_12_code = '' AND ingredient_12_dosage = '' OR
ingredient_12_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_12_dispenser AND i.ingredient_code = d.ingredient_12_code)) AND
(ingredient_13_dispenser = '' AND ingredient_13_code = '' AND ingredient_13_dosage = '' OR
ingredient_13_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_13_dispenser AND i.ingredient_code = d.ingredient_13_code)) AND
(ingredient_14_dispenser = '' AND ingredient_14_code = '' AND ingredient_14_dosage = '' OR
ingredient_14_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_14_dispenser AND i.ingredient_code = d.ingredient_14_code)) AND
(ingredient_15_dispenser = '' AND ingredient_15_code = '' AND ingredient_15_dosage = '' OR
ingredient_15_dosage != '' AND EXISTS(SELECT * FROM barbot_ingredients i WHERE i.active = 1 AND i.dispenser_type = d.ingredient_15_dispenser AND i.ingredient_code = d.ingredient_15_code))
