Select 选择字段中的Firebird WHERE子句

我这里有firebird的问题，我不认为这是正确的

SELECT 
      COUNT(STATUS) FROM(SELECT STATUS FROM T_TABLE2 WHERE STATUS = 'FAIL') AS FAIL,  
      DEVICENAME,  
      SITE_NUM,  
      COUNT(TEST_NUM)  
FROM T_TABLE2 A  
INNER JOIN T_TABLE1 B  
ON A.TBL1_ID = B.ID  
WHERE B.DEVICENAME = 'TANM1A009A_P28'  
AND A.TEST_NUM = 'T810'  
GROUP BY 
      DEVICENAME, 
      TESTER, 
      SITE_NUM 

我想计算TEST_NUM的行，即使它有FAIL值，我还想计算有FAIL值的状态。

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谢谢

我真的不知道FireBird，但从MSSQL的角度来看，你为什么不试试这个

SELECT 
      COUNT(A.STATUS) as 'FAIL', 
      B.DEVICENAME, 
      (TableofYourSitenum)SITE_NUM, -- i do no know what table this from 
      (TableofYourTestnum)COUNT(TEST_NUM)  as 'TESTNUM COUNT' --and this also you need to put the table name,
FROM T_TABLE2 A  
INNER JOIN T_TABLE1 B  
ON A.TBL1_ID = B.ID  
WHERE B.DEVICENAME = 'TANM1A009A_P28'  
AND A.TEST_NUM = 'T810'  
GROUP BY 
      A.STATUS, 
      (TableofYourTestnum)TESTNUM 

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这里有什么问题？这条线对吗？COUNTSTATUS FROM SELECT STATUS FROM T_TABLE2，其中STATUS='FAIL'为FAIL，我对firebird不太熟悉，但在SQLServer中，这不正确，应该是COUNTSTATUS FROM SELECT STATUS FROM T_TABLE2，其中STATUS='FAIL'