MariaDb查询错误

Question

我是MariaDb的新手，我的查询错误。

SELECT C.NUMASE,
      (SELECT SUM(B.TIPUS) AS TOT 
       FROM ( 
              SELECT A.NUMASE, CASE WHEN A.TIVA IS NULL THEN 1 ELSE 0  END AS TIPUS 
              FROM CONTA_001_CAS00118 as A 
              WHERE C.NUMASE = A.NUMASE and IFNULL(A.SR_DELETED,' ') <> 'T'
            ) AS B
       ) AS SUMT
FROM ( 
       SELECT DISTINCT NUMASE  
       FROM CONTA_001_CAS00118 
       WHERE IVA IS NOT NULL and IFNULL(SR_DELETED,' ') <> 'T' 
      ) AS C

错误是：

  

错误de SQL（1054）：未知列C.NUMASE in＆＃39; where clausule

任何人都可以帮助我吗？

谢谢 彼得。