diff --git a/superset/connectors/sqla/models.py b/superset/connectors/sqla/models.py
index 2afcc4d085..894e8eef43 100644
--- a/superset/connectors/sqla/models.py
+++ b/superset/connectors/sqla/models.py
@@ -477,7 +477,9 @@ class SqlaTable(Model, BaseDatasource):
                     if op == 'not in':
                         cond = ~cond
                     where_clause_and.append(cond)
-                elif op == '==':
+                if col_obj.is_num:
+                    eq = utils.string_to_num(flt['val'])
+                if op == '==':
                     where_clause_and.append(col_obj.sqla_col == eq)
                 elif op == '!=':
                     where_clause_and.append(col_obj.sqla_col != eq)