How to Spool SQL Query Results to a CSV File Using SQLPLUS?

Export SQL query results to CSV format using SQLPLUS

Question:

How to output SQL query results to CSV file using only SQLPLUS?

Answer:

To export query results to a CSV file in SQLPLUS, follow these steps:

<code class="language-sql">-- 设置列分隔符为逗号
set colsep ,

-- 抑制标题行
set pagesize 0

-- 删除尾随空格
set trimspool on

-- 可选：禁用标题分隔符
set headsep off

-- 定义行大小和数字宽度
set linesize X  -- 将'X'替换为总列宽
set numw X      -- 将'X'替换为所需的数字宽度（避免ID上的科学计数法）

-- 将结果输出到目标CSV文件
spool myfile.csv

-- 执行您的查询
select table_name, tablespace_name 
from all_tables
where owner = 'SYS'
  and tablespace_name is not null;

-- 停止输出
spool off</code>

Additional notes:

This method leaves some spaces between fields. To avoid this, you can use the following variation:

<code class="language-sql">-- 使用竖线作为列分隔符
set colsep |  

-- 或者，您可以使用以下方法（可能会在逗号前引入空格）
set colsep ,
set trimspool on
sed 's/\s+,/,/' myfile.csv </code>

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