如何计算sql中的零数？

Question

我有一列的值为0或1。如何计算零的数量？

    SELECT A.id
FROM table1 A
GROUP BY A.id
HAVING SUM(A.zeroorone) >=
ALL (SELECT SUM(AA.zeroorone)
    FROM table1 AA
    GROUP BY AA.id)

我知道这很重要。我似乎不明白

任何帮助深表感谢

Answer 1

CASE 语句会做得很好：

SELECT SUM(CASE WHEN zeroorone = 0 
                THEN 1 
                ELSE 0 END) AS TOTAL_ZEROS
  FROM table1 

Answer 2

正在使用计数...

SELECT COUNT(*) FROM table1 
WHERE zeroone=0