Question

我一直在努力应对其他StackOverflow响应。我想将查询的输出保存到本地文本文件 - 只要它在我的本地计算机上，文本文件的位置并不重要。

我正在使用的代码：

\COPY (
select month,count(*) as distinct_Count_month 
from
(
select UNIQUE_MEM_ID,to_char(transaction_date, 'YYYY-MM') as month
FROM yi_fourmpanel.card_panel WHERE COBRAND_ID = '10006164'
group by UNIQUE_MEM_ID,to_char(transaction_date, 'YYYY-MM')
) a
group by month) TO 'mycsv.csv' WITH CSV HEADER;

此代码出错：

<!-- language: none -->

An error occurred when executing the SQL command:
\COPY (

ERROR: syntax error at or near "\"
  Position: 1

\COPY (
^

Execution time: 0.08s
(Statement 1 of 2 finished)

An error occurred when executing the SQL command:
select month,count(*) as distinct_Count_month 
from
(
select UNIQUE_MEM_ID,to_char(transaction_date, 'YYYY-MM') as month
FROM yi_fourmpanel.card_panel...

ERROR: syntax error at or near ")"
  Position: 260

group by month) TO 'mycsv.csv' WITH CSV HEADER
              ^

Execution time: 0.08s
(Statement 2 of 2 finished)

2 statements failed.
Script execution finished
Total script execution time: 0.16s

Answer 1

1.对于服务器COPY ，请移除18, 94, 189, 105, 32, 153, 68, 159, 178, 34并在以下\中运行：

psql

COPY ( WITH data(val1, val2) AS ( VALUES ('v1', 'v2') ) SELECT * FROM data ) TO 'yourServerPath/output.csv' CSV HEADER;：

cat yourServerPath/output.csv

2.对于客户端COPY ：

val1,val2
v1,v2

psql -h host -U user -d database -c "\copy \ ( \ WITH data(val1, val2) AS ( VALUES \ (1, 2) \ ) \ SELECT * FROM data) TO 'yourClientPath/output.csv' CSV HEADER;"：

cat yourClientPath/output.csv

已更新

例如，在终端中的客户端计算机上，您需要使用绝对路径运行以下脚本val1,val2 1,2：

mycsv.csv

如何将PostgreSQL输出保存到文本文件

1 个答案:

已更新