diff --git a/lib/cartodb/models/dataview/aggregation.js b/lib/cartodb/models/dataview/aggregation.js
index ed0261ae..627eb73a 100644
--- a/lib/cartodb/models/dataview/aggregation.js
+++ b/lib/cartodb/models/dataview/aggregation.js
@@ -130,6 +130,41 @@ const aggregationQueryTpl = ctx => `
     ORDER BY value DESC
 `;
 
+const categoriesCTESqlTpl = ctx => `
+    WITH
+        ${filteredQueryTpl({
+            _isFloatColumn: ctx.isFloatColumn,
+            _query: ctx.query,
+            _column: ctx.column,
+            _aggregationColumn: ctx.aggregation !== 'count' ? ctx.aggregationColumn : null
+        })},
+        ${summaryQueryTpl({
+            _isFloatColumn: ctx.isFloatColumn,
+            _query: ctx.query,
+            _column: ctx.column,
+            _aggregationColumn: ctx.aggregation !== 'count' ? ctx.aggregationColumn : null
+        })},
+        ${rankedCategoriesQueryTpl({
+            _query: ctx.query,
+            _column: ctx.column,
+            _aggregation: aggregationFnQueryTpl({
+                aggregation: ctx.aggregation,
+                aggregationColumn: ctx.aggregationColumn || 1
+            }),
+            _aggregationColumn: ctx.aggregation !== 'count' ? ctx.aggregationColumn : null
+        })},
+        ${categoriesSummaryMinMaxQueryTpl({
+            _query: ctx.query,
+            _column: ctx.column
+        })},
+        ${categoriesSummaryCountQueryTpl({
+            _query: ctx.query,
+            _column: ctx.column
+        })}
+`;
+
+const aggregationFnQueryTpl = ctx => `${ctx.aggregation}(${ctx.aggregationColumn})`;
+
 const CATEGORIES_LIMIT = 6;
 
 const VALID_OPERATIONS = {
@@ -209,32 +244,37 @@ Aggregation.prototype.sql = function(psql, override, callback) {
 
     var aggregationSql;
 
+
+
     if (!!override.ownFilter) {
         aggregationSql = [
-            this.getCategoriesCTESql(
-                _query,
-                this.column,
-                this.aggregation,
-                this.aggregationColumn,
-                this._isFloatColumn
-            ),
+            categoriesCTESqlTpl({
+                query: _query,
+                column: this.column,
+                aggregation: this.aggregation,
+                aggregationColumn: this.aggregationColumn,
+                isFloatColumn: this._isFloatColumn
+            }),
             aggregationQueryTpl({
                 _isFloatColumn: this._isFloatColumn,
                 _query: _query,
                 _column: this.column,
-                _aggregation: this.getAggregationSql(),
+                _aggregation: aggregationFnQueryTpl({
+                    aggregation: this.aggregation,
+                    aggregationColumn: this.aggregationColumn || 1
+                }),
                 _limit: CATEGORIES_LIMIT
             })
         ].join('\n');
     } else {
         aggregationSql = [
-            this.getCategoriesCTESql(
-                _query,
-                this.column,
-                this.aggregation,
-                this.aggregationColumn,
-                this._isFloatColumn
-            ),
+            categoriesCTESqlTpl({
+                query: _query,
+                column: this.column,
+                aggregation: this.aggregation,
+                aggregationColumn: this.aggregationColumn,
+                isFloatColumn: this._isFloatColumn
+            }),
             rankedAggregationQueryTpl({
                 _isFloatColumn: this._isFloatColumn,
                 _query: _query,
@@ -250,47 +290,6 @@ Aggregation.prototype.sql = function(psql, override, callback) {
     return callback(null, aggregationSql);
 };
 
-Aggregation.prototype.getCategoriesCTESql = function() {
-    return `
-        WITH
-            ${filteredQueryTpl({
-                _isFloatColumn: this._isFloatColumn,
-                _query: this.query,
-                _column: this.column,
-                _aggregationColumn: this.aggregation !== 'count' ? this.aggregationColumn : null
-            })},
-            ${summaryQueryTpl({
-                _isFloatColumn: this._isFloatColumn,
-                _query: this.query,
-                _column: this.column,
-                _aggregationColumn: this.aggregation !== 'count' ? this.aggregationColumn : null
-            })},
-            ${rankedCategoriesQueryTpl({
-                _query: this.query,
-                _column: this.column,
-                _aggregation: this.getAggregationSql(),
-                _aggregationColumn: this.aggregation !== 'count' ? this.aggregationColumn : null
-            })},
-            ${categoriesSummaryMinMaxQueryTpl({
-                _query: this.query,
-                _column: this.column
-            })},
-            ${categoriesSummaryCountQueryTpl({
-                _query: this.query,
-                _column: this.column
-            })}
-    `;
-};
-
-const aggregationFnQueryTpl = ctx => `${ctx._aggregationFn}(${ctx._aggregationColumn})`;
-
-Aggregation.prototype.getAggregationSql = function() {
-    return aggregationFnQueryTpl({
-        _aggregationFn: this.aggregation,
-        _aggregationColumn: this.aggregationColumn || 1
-    });
-};
-
 Aggregation.prototype.format = function(result) {
     var categories = [];
     var count = 0;