How to Export SQLPLUS Query Results to a CSV File?

*Exporting SQLPlus Query Results to CSV**

Problem: How do I export SQL*Plus query results directly into a CSV file?

Solution:

SQL*Plus offers a straightforward method for spooling query output to a CSV file. Follow these steps:

<code class="language-sql">SET COLSEP ','       -- Set comma as column separator
SET PAGESIZE 0       -- Suppress header rows
SET TRIMSPOOL ON     -- Remove trailing whitespace
SET HEADSEP OFF      -- Remove header separation (optional)
SET LINESIZE X       -- Adjust line width (X = sum of column widths)
SET NUMW X           -- Adjust numeric field width (X = appropriate value to avoid scientific notation)

SPOOL myfile.csv     -- Specify output file name

SELECT table_name, tablespace_name
  FROM all_tables
 WHERE owner = 'SYS'
   AND tablespace_name IS NOT NULL;

SPOOL OFF             -- Close the spool file</code>

This creates myfile.csv with comma-separated values, no header rows, and trimmed whitespace. A sample output might look like:

<code>TABLE_PRIVILEGE_MAP,SYSTEM
SYSTEM_PRIVILEGE_MAP,SYSTEM
STMT_AUDIT_OPTION_MAP,SYSTEM
DUAL,SYSTEM
...</code>

For additional cleanup, remove leading whitespace before commas using a command like:

<code class="language-bash">
sed 's/\s\+,/,/g' myfile.csv > myfile_cleaned.csv
```  This creates a new file `myfile_cleaned.csv` with the extra whitespace removed.</code>

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