How to Join Tables with ssp.class.php when it Doesn't Support JOINs?

Tricks to Join Tables with ssp.class.php**

Understanding the Need

When working with DataTables jQuery plug-in and using ssp.class.php for server-side processing, a common challenge arises when attempting to display data from a table with self-referential relationships. For instance, in a table where father_id refers to a row within the same table, a need arises to join or subquery the table to retrieve additional information.

ssp.class.php Limitations

ssp.class.php doesn't inherently support JOINs or subqueries. However, there is a workaround.

Using a Subquery

To circumvent this limitation, you can use a subquery in the $table definition:

$table = <<<EOT
(
    SELECT 
      a.id, 
      a.name, 
      a.father_id, 
      b.name AS father_name
    FROM table a
    LEFT JOIN table b ON a.father_id = b.id
) temp
EOT;

Adjusting Database Details

Replace table with your actual table name and adjust the $primaryKey and $columns arrays accordingly.

Modifying ssp.class.php**

Remove backticks from all instances of FROM $table in ssp.class.php by replacing them with FROM $table.

Additional Notes

• Ensure all column names are unique, or use AS to assign aliases.
• For further information, refer to [jQuery DataTables: Using WHERE, JOIN and GROUP BY with ssp.class.php](https://datatables.net/extensions/jquery/using-where-join-group-by).

Enhanced ssp.class.php** Support

An enhanced version of ssp.class.php that supports JOINs can be found at [github.com/emran/ssp](github.com/emran/ssp).

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