From 141dc12e445f5a1bbaa720b988b135b01d329789 Mon Sep 17 00:00:00 2001
From: Maxime Beauchemin <maximebeauchemin@gmail.com>
Date: Thu, 23 Jun 2016 16:59:10 -0700
Subject: [PATCH] Adding quarter time grain for Presto

---
 caravel/models.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/caravel/models.py b/caravel/models.py
index 5396356aebaf8..db04e39cd2622 100644
--- a/caravel/models.py
+++ b/caravel/models.py
@@ -406,6 +406,7 @@ def grains(self):
                 Grain('Time Column', _('Time Column'), '{col}'),
                 Grain('week', _('week'), "date_trunc('week', CAST({col} AS DATE))"),
                 Grain('month', _('month'), "date_trunc('month', CAST({col} AS DATE))"),
+                Grain('quarter', _('quarter'), "date_trunc('quarter', CAST({col} AS DATE))"),
                 Grain("week_ending_saturday", _('week_ending_saturday'), "date_add('day', 5, "
                       "date_trunc('week', date_add('day', 1, CAST({col} AS DATE))))"),
                 Grain("week_start_sunday", _('week_start_sunday'), "date_add('day', -1, "