Question

我有任何原因导致错误的表达错误？

select 
        CASE WHEN 
          (
            SELECT COUNT(*) AS COUNT
            FROM TRANSPLANT_ORGANS 
              INNER JOIN ORGAN_TYPE ON TRANSPLANT_ORGANS.TX_ORG_ID = ORGAN_TYPE.ORG_RECORD_ID 
           WHERE COUNT > 0
          )
      THEN
        (
             SELECT SUBSTR(CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID BETWEEN 660 AND 662 THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/KIDNEY' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID BETWEEN 640 AND 650 THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/LIVER' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID IN (620,622) THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/PANCREAS' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID IN (621) THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/PANCREAS ISLETS' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID IN (700) THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/HEART' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID IN (600) THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/LUNGS' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID BETWEEN 601 AND 607 THEN 1 ELSE 0 END) WHEN 2 THEN '/LUNGS' WHEN 0 THEN '' ELSE '/LUNG' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID IN (680) THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/INTESTINES' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID BETWEEN 685 AND 686 THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE 'SMALL INTESTINE' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID BETWEEN 683 AND 684 THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE 'LARGE INTESTINES' END,
                  CONCAT(CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID IN (681) THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/DUODENUM' END,
                         CASE SUM(CASE WHEN ORGAN_TYPE.ORG_ID IN (682) THEN 1 ELSE 0 END) WHEN 0 THEN '' ELSE '/STOMACH' END))))))))))),2,255)
            FROM TRANSPLANT_ORGANS 
                INNER JOIN ORGAN_TYPE ON TRANSPLANT_ORGANS.TX_ORG_ID = ORGAN_TYPE.ORG_RECORD_ID
        )
        END

Answer 1

首先，您正在从transplant_organs中检索COUNT，但之后从未进行过比较。可以移除WHERE COUNT > 0，然后使用结束括号，您可以放置) > 0。

其次，您的外部选择没有FROM子句。至少使用FROM dual。

示例：

SELECT CASE
         WHEN (SELECT 1 FROM dual) > 0 
           THEN (SELECT 'Something' FROM dual)
       END
  FROM dual;

缺少表达错误

1 个答案: