How to get comma separated values from SQL

There are few types where you can get comma separated values form SQL SERVER using SQL

1. XML PATH method:

SELECT 
   STUFF((SELECT ', ' + column_name
          FROM table_name
          WHERE conditions
          FOR XML PATH('')), 1, 2, '') AS csv_values;
  

2. COALESCE and FOR XML method:

SELECT 
   STUFF((
      SELECT ', ' + column_name
      FROM table_name
      WHERE conditions
      FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, '') AS csv_values;
  

3. FOR XML PATH method

SELECT 
   STUFF((SELECT ',' + column_name
          FROM table_name
          WHERE conditions
          FOR XML PATH('')), 1, 1, '') AS csv_values;
  

In these examples, replace column_name with the actual column name and table_name with the appropriate table name. Customize the WHERE clause to filter the desired rows if necessary.

When executing these queries, a single row with a single column will be returned, containing the comma-separated values from the specified column. Please note that the XML-related methods convert the values to XML and then manipulate them, resulting in a string of comma-separated values.

Hope this helps!!