Question

要求：将行数附加到文件的尾端

SQL

COPY INTO @s3bucket/path/filename.txt
FROM(SELECT
        a.acct_num,
        a.state,
        CASE WHEN b.tn IS NOT NULL THEN 'Y' ELSE 'N' END IND
     FROM table_A a
     LEFT OUTER JOIN table_B b ON a.tn = b.tn
    );

预期的输出 TR|3应该附加到文件的尾部

"1111"|"NEWYORK"|"N"
"2222"|"NEWJERSEY|"Y"
"333"|"TEXAS"|"N"
TR|3

编辑1：

使用@Iron DBA提到的COPY命令上载数据并实现了Python函数更新尾行

Answer 1

也许您可以使用UNION ALL将计数包括在最后一行：

copy into @deneme from 
(
with st as (
select * from values 
('1111','NEWYORK','N'),
('2222','NEWJERSEY','Y'),
('333','TEXAS','N') tmp(acct_num, state, ind ) ) 
  select acct_num, state, ind from (
  select *, 0 sorting_column from st
  union all
  select 'TR',count(*)::VARCHAR,null, 1 from st)
  order by sorting_column
);

select $1, $2, $3 from @testing;


+------+-----------+----+
| $1   | $2        | $3 |
+------+-----------+----+
| 1111 | NEWYORK   | N  |
| 2222 | NEWJERSEY | Y  |
| 333  | TEXAS     | N  |
| TR   | 3         |    |
+------+-----------+----+

雪花：将行数附加到文件的末尾，同时卸载到S3中

1 个答案: