diff --git a/src/Bundle/ChillActivityBundle/Export/Aggregator/ACPAggregators/ByActivityNumberAggregator.php b/src/Bundle/ChillActivityBundle/Export/Aggregator/ACPAggregators/ByActivityNumberAggregator.php
index ae7492724..44a3fd8f0 100644
--- a/src/Bundle/ChillActivityBundle/Export/Aggregator/ACPAggregators/ByActivityNumberAggregator.php
+++ b/src/Bundle/ChillActivityBundle/Export/Aggregator/ACPAggregators/ByActivityNumberAggregator.php
@@ -25,8 +25,8 @@ class ByActivityNumberAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS activity_by_number_aggregator')
+            ->addGroupBy('activity_by_number_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class ByActivityNumberAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['activity_by_number_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillActivityBundle/Export/Aggregator/SentReceivedAggregator.php b/src/Bundle/ChillActivityBundle/Export/Aggregator/SentReceivedAggregator.php
index 85c37454f..bf848d5e1 100644
--- a/src/Bundle/ChillActivityBundle/Export/Aggregator/SentReceivedAggregator.php
+++ b/src/Bundle/ChillActivityBundle/Export/Aggregator/SentReceivedAggregator.php
@@ -25,8 +25,8 @@ class SentReceivedAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS activity_sent_received_aggregator')
+            ->addGroupBy('activity_sent_received_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class SentReceivedAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['activity_sent_received_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillAsideActivityBundle/src/Export/Aggregator/ByActivityTypeAggregator.php b/src/Bundle/ChillAsideActivityBundle/src/Export/Aggregator/ByActivityTypeAggregator.php
index 36b643d53..bbbdb6284 100644
--- a/src/Bundle/ChillAsideActivityBundle/src/Export/Aggregator/ByActivityTypeAggregator.php
+++ b/src/Bundle/ChillAsideActivityBundle/src/Export/Aggregator/ByActivityTypeAggregator.php
@@ -25,8 +25,8 @@ class ByActivityTypeAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS aside_by_activity_type_aggregator')
+            ->addGroupBy('aside_by_activity_type_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class ByActivityTypeAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['aside_by_activity_type_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/ByActionNumberAggregator.php b/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/ByActionNumberAggregator.php
index c3f94b947..3c16aa161 100644
--- a/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/ByActionNumberAggregator.php
+++ b/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/ByActionNumberAggregator.php
@@ -25,8 +25,8 @@ class ByActionNumberAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS acp_by_action_number_aggregator')
+            ->addGroupBy('acp_by_action_number_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class ByActionNumberAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['acp_by_action_number_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/CreatorJobAggregator.php b/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/CreatorJobAggregator.php
index 0eb98b0d4..1449091e7 100644
--- a/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/CreatorJobAggregator.php
+++ b/src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/CreatorJobAggregator.php
@@ -25,8 +25,8 @@ class CreatorJobAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS acp_creator_job_aggregator')
+            ->addGroupBy('acp_creator_job_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class CreatorJobAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['acp_creator_job_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByEndDateAggregator.php b/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByEndDateAggregator.php
index 46c3b460f..9c90c8dd3 100644
--- a/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByEndDateAggregator.php
+++ b/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByEndDateAggregator.php
@@ -25,8 +25,8 @@ class ByEndDateAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS eval_by_end_date_aggregator')
+            ->addGroupBy('eval_by_end_date_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class ByEndDateAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['eval_by_end_date_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByMaxDateAggregator.php b/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByMaxDateAggregator.php
index 689b6fea3..ded9fb685 100644
--- a/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByMaxDateAggregator.php
+++ b/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByMaxDateAggregator.php
@@ -25,8 +25,8 @@ class ByMaxDateAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS eval_by_max_date_aggregator')
+            ->addGroupBy('eval_by_max_date_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class ByMaxDateAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['eval_by_max_date_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByStartDateAggregator.php b/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByStartDateAggregator.php
index 656054250..121171d8c 100644
--- a/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByStartDateAggregator.php
+++ b/src/Bundle/ChillPersonBundle/Export/Aggregator/EvaluationAggregators/ByStartDateAggregator.php
@@ -25,8 +25,8 @@ class ByStartDateAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS eval_by_start_date_aggregator')
+            ->addGroupBy('eval_by_start_date_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class ByStartDateAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['eval_by_start_date_aggregator'];
     }
 
     public function getTitle(): string
diff --git a/src/Bundle/ChillPersonBundle/Export/Aggregator/SocialWorkAggregators/CurrentActionAggregator.php b/src/Bundle/ChillPersonBundle/Export/Aggregator/SocialWorkAggregators/CurrentActionAggregator.php
index c69cda35d..9a9c56afc 100644
--- a/src/Bundle/ChillPersonBundle/Export/Aggregator/SocialWorkAggregators/CurrentActionAggregator.php
+++ b/src/Bundle/ChillPersonBundle/Export/Aggregator/SocialWorkAggregators/CurrentActionAggregator.php
@@ -25,8 +25,8 @@ class CurrentActionAggregator implements AggregatorInterface
 
     public function alterQuery(QueryBuilder $qb, $data)
     {
-        $qb->addSelect('AS _aggregator')
-            ->addGroupBy('_aggregator');
+        $qb->addSelect('AS acpw_current_action_aggregator')
+            ->addGroupBy('acpw_current_action_aggregator');
     }
 
     public function applyOn(): string
@@ -50,7 +50,7 @@ class CurrentActionAggregator implements AggregatorInterface
 
     public function getQueryKeys($data): array
     {
-        return ['_aggregator'];
+        return ['acpw_current_action_aggregator'];
     }
 
     public function getTitle(): string