多个子查询错误 "invalid identifier"

Question

我正在处理这段代码，但我一直收到 t2.nabp_num

的无效标识符

 `with t1 as (query1),
   t2 as (query2)
   Select t1.*, t2.device_count, 
   d.* from t1 
   inner join t2 on
   t1.nabp_num = t2.nabp_num and
   t1.dt = t2.dt and
   t1.d_member = t2.d_member
   inner join drug_product d on
   t1.d_product_id = d.product_id

   order by claim_count desc;`

我得到无效的标识符

Answer 1

如前所述，您不能引用不存在的内容。

如果您发布实际查询而不是无效查询，那肯定会有所帮助

with t1 as (query1          --> what is "query1"?
     Order by ...

无论如何：因为 NABP_NUM 在这里被引用：

inner join t2 on t1.nabp_num = t2.nabp_num

这意味着它必须是 t1 和 t2 的一部分。但是，由于 t2 CTE 结果来自 t1，也许您根本不需要 t1 ...

如果添加 select 列列表或 group by 子句中当前缺少的所有列，查询将如下所示（请参阅代码中的注释）：

WITH
   t1
   AS
      (SELECT d_member_id,
              dt,
              device_type,
              claim_id,
              nabp_num,          --> add NABP_NUM
              d_member_hq_id     --> add D_MEMBER_HQ_ID
              d_drug_product_id  --> add D_DRUG_PRODUCT_ID
         FROM some_table         --> which table?
      ),       --> remove ORDER BY, it is useless here
   t2
   AS
      (  SELECT d_member_id,
                dt,
                nabp_num,        --> add NABP_NUM
                d_member_hq_id,  --> add D_MEMBER_HQ_ID
                COUNT (DISTINCT device_type) AS device_count,
                COUNT (DISTINCT claim_ID) AS claim_count
           FROM t1
       GROUP BY d_member_id, dt, nabp_num, d_member_hq_id)   --> add NABP_NUM and D_MEMBER_HQ_ID
  SELECT t1.*, t2.device_count, d.*
    FROM t1
         INNER JOIN t2
            ON     t1.nabp_num = t2.nabp_num
               AND t1.dt = t2.dt
               AND t1.d_member_hq_id = t2.d_member_hq_id
         INNER JOIN vmd_drug_product d
            ON t1.d_drug_product_id = d.d_drug_product_id
ORDER BY t2.claim_count DESC;

尽管这不应该 return 任何语法错误（假设此处使用的列确实存在于 some_table 中），但我无法判断这是否会 - 或不会 - return 想要的结果。

多个子查询错误 "invalid identifier"

multiple subquery error "invalid identifier"

sql

nested

subquery

multidimensional-array

oracle-sqldeveloper