soerepro: par_a_code must be unique

[Olivier Maury]

The file template and the integration at soerepro/insertion/copyPasteFile use par_a_code to find the parameter. But par_a_code is not unique. Several parameters have the same code ("PCB *").

This will block the integration of values for such parameters.

To find them, use this SQL query:

 SELECT par_a_code, COUNT(*) AS cpt
 FROM parametre
 GROUP BY par_a_code
 HAVING COUNT(*) > 1
 ORDER BY par_a_code;

When these few codes will be replaced, a UNIQUE constraint must be added.