Mysql
如何通過依賴我的 sql 中的其他列來對列求和?
如何通過updateid列的最新數據計算列的/SUM?
我試試這個:
SELECT * FROM yourTable;
SELECT ANY_VALUE(code) AS code, COUNT(*) AS total_rows, SUM(data->'$.chart."21"') AS total_a FROM yourTable GROUP BY code ORDER BY code;
從上面的查詢中,它對所有行求和,它應該是最新的更新 id
任何人都可以解決這個問題?
SELECT t1.code, COUNT(*) AS total_rows, SUM(t1.data->'$.chart."21"') AS total_a FROM yourTable AS t1 JOIN (SELECT code, MAX(updateid) AS updateid FROM yourTable GROUP BY code) AS t2 ON t1.code = t2.code AND t1.updateid = t2.updateid GROUP BY t1.code ORDER BY t1.code;