mariadb mioux@xxx:Prisme> SELECT count(*) FROM `pdc_client` WHERE partenaire in(19765,19764) AND `cgp` = 11241 LIMIT 50 ;
+------------+
| count(*)   |
|------------|
| 0          |
+------------+
1 row in set
Time: 0.014s
mariadb mioux@xxx:Prisme> SELECT count(*) FROM `pdc_client` WHERE partenaire in(19765) AND `cgp` = 11241 LIMIT 50;
+------------+
| count(*)   |
|------------|
| 1042       |
+------------+
1 row in set
Time: 0.024s
mariadb mioux@xxx:Prisme> SELECT count(*) FROM `pdc_client` WHERE partenaire in(19764) AND `cgp` = 11241 LIMIT 50;
+------------+
| count(*)   |
|------------|
| 43         |
+------------+
1 row in set