From b545ddc0e1e5ce16b4b5421d76dbe2a104859cda Mon Sep 17 00:00:00 2001
From: Nick Alexander <nalexander@mozilla.com>
Date: Fri, 15 Jul 2016 12:42:20 -0700
Subject: [PATCH] Handle empty :where SQL clauses in query.

---
 src/datomish/query.cljc | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/datomish/query.cljc b/src/datomish/query.cljc
index 3924f09a..280632ed 100644
--- a/src/datomish/query.cljc
+++ b/src/datomish/query.cljc
@@ -170,11 +170,12 @@
              [(map row columns-in-order) nil])))))
 
 (defn context->sql-clause [context]
-  {:select (sql-projection context)
-   :from (:from context)
-   :where (if (empty? (:wheres context))
-            nil
-            (cons :and (:wheres context)))})
+  (merge
+    {:select (sql-projection context)
+     :from (:from context)}
+    (if (empty? (:wheres context))
+      {}
+      {:where (cons :and (:wheres context))})))
 
 (defn context->sql-string [context]
   (->