Merge pull request #164 from behldizh/add-stddev-funcs-develop

Add stddev funcs to F()

src/infi/clickhouse_orm/funcs.py

@@ -1633,6 +1633,16 @@ class F(Cond, FunctionOperatorsMixin, metaclass=FMeta):
     def varSamp(x):
         return F('varSamp', x)
 
+    @staticmethod
+    @aggregate
+    def stddevPop(expr):
+        return F('stddevPop', expr)
+
+    @staticmethod
+    @aggregate
+    def stddevSamp(expr):
+        return F('stddevSamp', expr)
+
     @staticmethod
     @aggregate
     @parametric