Question

我尽力简化我的问题。用户需要根据 batch_id 从数据库中进行选择。（有多种交易方式）

使用下面的查询它不会返回所有的事务。应该返回116行但它只返回115行。因为 to_acct_no 列值无效而导致一行丢失的原因。这意味着何时如果 from_acct_no 或 to_acct_no 无效，我的查询不包含条件，则会发生交易。 from_acct_no 或 to_acct_no 无效。需要建议使用哪种方法。

使用NULL但仍然返回相同的结果，因为列中有值但没有正确的值。

Table

Batch_id | From_acct_no  | to_acct_no
 61619   |  001102125698 |  01278965321
 61619   |  001103568965 |  013052542

查询

SELECT a.batch_id, 
       a.effective_dt, 
       a.from_acct_no, 
       e.title_1, 
       b.iso_code AS 'from_currency', 
       a.from_crncy, 
       a.to_crncy, 
       a.to_acct_no, 
       f.title_1, 
       c.iso_code AS 'to_currency', 
       a.to_posted_amt, 
       a.status, 
       a.rej_reason, 
       d.short_text, 
       a.from_description, 
       a.from_amt, 
       a.batch_tran_id, 
       d.error_text 
FROM   gb_batch_tfr_trans a, 
       ad_gb_crncy b, 
       ad_gb_crncy c, 
       pc_ov_error d, 
       dp_acct e, 
       ln_acct f 
WHERE  a.from_crncy = b.crncy_id 
       AND a.to_crncy = c.crncy_id 
       AND d.error_id =* a.rej_reason 
       AND a.status IN ( 'rejected' ) 
       AND ( a.from_acct_no = e.acct_no 
              OR a.from_acct_no IS NULL 
                 AND e.acct_no IS NULL ) 
       AND ( a.to_acct_no = f.acct_no 
              OR a.to_acct_no IS NULL 
                 AND f.acct_no IS NULL ) 
       AND a.batch_id = 61619

添加了代码（我遵循基于给定答案的代码结构）

 union      
 SELECT a.batch_id, 
   a.effective_dt, 
   a.from_acct_no, 
   e.description, 
   b.iso_code AS 'from_currency', 
   a.from_crncy, 
   a.to_crncy, 
   a.to_acct_no, 
   f.description, 
   c.iso_code AS 'to_currency', 
   a.to_posted_amt, 
   a.status, 
   a.rej_reason, 
   d.short_text, 
   a.from_description, 
   a.from_amt, 
   a.batch_tran_id, 
   d.error_text 
FROM   gb_batch_tfr_trans a
INNER JOIN ad_gb_crncy b ON a.from_crncy = b.crncy_id
INNER JOIN ad_gb_crncy c ON a.to_crncy = c.crncy_id 
LEFT OUTER JOIN pc_ov_error d ON  a.rej_reason = d.error_id
LEFT OUTER JOIN gl_acct e ON a.from_acct_no = e.acct_no
LEFT OUTER JOIN gl_acct f ON a.to_acct_no = f.acct_no
WHERE a.status IN ( 'rejected' ) 
   AND a.batch_id = 61619

Answer 1

我认为问题可能是您正在使用表“dp_acct”和“ln_acct”的内部联接。尝试：

SELECT a.batch_id, 
       a.effective_dt, 
       a.from_acct_no, 
       e.title_1, 
       b.iso_code AS 'from_currency', 
       a.from_crncy, 
       a.to_crncy, 
       a.to_acct_no, 
       f.title_1, 
       c.iso_code AS 'to_currency', 
       a.to_posted_amt, 
       a.status, 
       a.rej_reason, 
       d.short_text, 
       a.from_description, 
       a.from_amt, 
       a.batch_tran_id, 
       d.error_text 
FROM   gb_batch_tfr_trans a
INNER JOIN ad_gb_crncy b ON a.from_crncy = b.crncy_id
INNER JOIN ad_gb_crncy c ON a.to_crncy = c.crncy_id 
LEFT OUTER JOIN pc_ov_error d ON  a.rej_reason = d.error_id
LEFT OUTER JOIN dp_acct e ON a.from_acct_no = e.acct_no
LEFT OUTER JOIN ln_acct f ON a.to_acct_no = f.acct_no
WHERE a.status IN ( 'rejected' ) 
       AND a.batch_id = 61619

适当的子句返回值为null而不是null但是其他错误

1 个答案: