Update SurveyUnitDocument.java

Author: alexisszmundy

src/main/java/fr/insee/genesis/infrastructure/document/surveyunit/SurveyUnitDocument.java

@@ -10,7 +10,7 @@
 
 @Data
 @Document(collection = Constants.MONGODB_RESPONSE_COLLECTION_NAME)
-@CompoundIndex(name = "idCampaign_1_idQuestionnaire_1", def = "{'idCampaign': 1, 'idQuestionnaire': 1}")
+@CompoundIndex(name = "idCampaign_1_idQuestionnaire_1", def = "{'idCampaign': 1, 'idQuestionnaire': 1}") //1 = ascending, -1 = descending
 @CompoundIndex(name = "idQuestionnaire_1_idCampaign_1", def = "{'idQuestionnaire': 1, 'idCampaign': 1}")
 @CompoundIndex(name = "idQuestionnaire_1_idUE_1", def = "{'idQuestionnaire': 1, 'idUE': 1}")
 public class SurveyUnitDocument {