diff --git a/lib/cartodb/utils/style/postgres-datasource.js b/lib/cartodb/utils/style/postgres-datasource.js
index 5db35607..3e87f101 100644
--- a/lib/cartodb/utils/style/postgres-datasource.js
+++ b/lib/cartodb/utils/style/postgres-datasource.js
@@ -23,8 +23,35 @@ var methodTemplates = Object.keys(methods).reduce(function(methodTemplates, meth
     return methodTemplates;
 }, {});
 
+methodTemplates.category = dot.template([
+    'WITH',
+    'categories AS (',
+    '  SELECT {{=it._column}} AS category, count(1) AS value, row_number() OVER (ORDER BY count(1) desc) as rank',
+    '  FROM ({{=it._sql}}) _cdb_aggregation_all',
+    '  GROUP BY {{=it._column}}',
+    '  ORDER BY 2 DESC',
+    '),',
+    'agg_categories AS (',
+    '  SELECT \'__other\' category',
+    '  FROM categories',
+    '  WHERE rank >= {{=it._buckets}}',
+    '  GROUP BY 1',
+    '  UNION ALL',
+    '  SELECT CAST(category AS text)',
+    '  FROM categories',
+    '  WHERE rank < {{=it._buckets}}',
+    ')',
+    'SELECT array_agg(category) AS category FROM agg_categories'
+].join('\n'));
+
+var STRATEGY = {
+    SPLIT: 'split',
+    EXACT: 'exact'
+};
+
 var method2strategy = {
-    headtails: 'split'
+    headtails: STRATEGY.SPLIT,
+    category: STRATEGY.EXACT
 };
 
 function PostgresDatasource (pgQueryRunner, username, query) {
@@ -38,7 +65,7 @@ PostgresDatasource.prototype.getName = function () {
 };
 
 PostgresDatasource.prototype.getRamp = function (column, buckets, method, callback) {
-    var methodName = methods.hasOwnProperty(method) ? method : 'quantiles';
+    var methodName = methodTemplates.hasOwnProperty(method) ? method : 'quantiles';
     var template = methodTemplates[methodName];
 
     var query = template({ _column: column, _sql: this.query, _buckets: buckets });
@@ -48,11 +75,15 @@ PostgresDatasource.prototype.getRamp = function (column, buckets, method, callba
             return callback(err);
         }
 
-        var ramp = result[0][methodName].sort(function(a, b) {
-            return a - b;
-        });
+        var strategy = method2strategy[methodName];
+        var ramp = result[0][methodName];
+        if (strategy !== STRATEGY.EXACT) {
+            ramp = ramp.sort(function(a, b) {
+                return a - b;
+            });
+        }
 
-        return callback(null, { ramp: ramp, strategy: method2strategy[methodName] });
+        return callback(null, { ramp: ramp, strategy: strategy });
     });
 };