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CREATE TABLE ml_categories ( id VARCHAR(10), categories json ); INSERT INTO ml_categories VALUES ('id1', '[20,25]'), ('id2', '[25]'), ('id3', '[20,25,28]'), ('id4', '[28,25]'), ('id5', '[20,25]');
Records: 5 Duplicates: 0 Warnings: 0
SELECT 20 as count, sum(case when 20 in (comp1,comp2,comp3) then 1 end) as number FROM (SELECT JSON_EXTRACT(categories, '$[0]') as comp1, JSON_EXTRACT(categories, '$[1]') as comp2, JSON_EXTRACT(categories, '$[2]') as comp3 FROM ml_categories ) q1 UNION ALL SELECT 25 as count, sum(case when 25 in (comp1,comp2,comp3) then 1 end) as number FROM (SELECT JSON_EXTRACT(categories, '$[0]') as comp1, JSON_EXTRACT(categories, '$[1]') as comp2, JSON_EXTRACT(categories, '$[2]') as comp3 FROM ml_categories ) q2 UNION ALL SELECT 28 as count, sum(case when 28 in (comp1,comp2,comp3) then 1 end) as number FROM (SELECT JSON_EXTRACT(categories, '$[0]') as comp1, JSON_EXTRACT(categories, '$[1]') as comp2, JSON_EXTRACT(categories, '$[2]') as comp3 FROM ml_categories ) q3;
count
number
20
3
25
5
28
2