Add "isblank" and "isnonblank" query filter types (#23)

AetherUnbound · labkey-alan · commit ea91ddfa6cf3 · 2019-05-02T16:08:30.000-07:00
diff --git a/labkey/query.py b/labkey/query.py
@@ -352,6 +352,9 @@ class Types:
         BETWEEN = 'between'
         NOT_BETWEEN = 'notbetween'
 
+        IS_BLANK = 'isblank'
+        IS_NOT_BLANK = 'isnonblank'
+
         MEMBER_OF = 'memberof'
 
     def __init__(self, column, value, filter_type=Types.EQUAL):
