मैं यह कहकर शुरू करूंगा कि आपको वास्तव में अपने डेटाबेस को सामान्य करने की आवश्यकता है। लेकिन यह एक और सवाल है। इस बीच, आप इस क्वेरी का उपयोग कर सकते हैं। मैंने इसे केवल चार अवयवों के लिए दिखाया है, आपको अपने मामले के लिए इसे 15 तक बढ़ाना होगा।
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))
आपके नमूना डेटा के साथ, यह निम्न आउटपुट उत्पन्न करता है:
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
संपादित करें
ओपी के साथ कुछ विस्तारित चर्चाओं के आधार पर, क्वेरी को नीचे के रूप में परिष्कृत किया गया है। इस क्वेरी के लिए आवश्यक है कि पेय में प्रत्येक घटक के लिए डिस्पेंसर, कोड और खुराक सभी मौजूद हों। एक SQLFiddle उपलब्ध है।
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))
