Merge pull request #16 from solatis/master

Implements dsl/not-exists
funcool · Jun 11, 2016 · d82b8eb · d82b8eb
2 parents 2ac344a + 173e0a8
commit d82b8eb
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diff --git a/src/suricatta/dsl.clj b/src/suricatta/dsl.clj
@@ -486,6 +486,12 @@
   (defer
     (DSL/exists @q)))
 
+(defn not-exists
+  "Create a not-exists condition."
+  [q]
+  (defer
+    (DSL/notExists @q)))
+
 (defn group-by
   [q & fields]
   (defer

diff --git a/test/suricatta/dsl_test.clj b/test/suricatta/dsl_test.clj
@@ -271,7 +271,15 @@
                                             (dsl/where ["table.author_id = author.id"])))))]
       (is (= (fmt/sql q)
              "select fullname from author where exists (select id from table where (table.author_id = author.id))"))))
-)
+
+  (testing "Nested select in where clause using not-exists"
+    (let [q  (-> (dsl/select :fullname)
+                 (dsl/from :author)
+                 (dsl/where (dsl/not-exists (-> (dsl/select :id)
+                                                (dsl/from :table)
+                                                (dsl/where ["table.author_id = author.id"])))))]
+      (is (= (fmt/sql q)
+             "select fullname from author where not exists (select id from table where (table.author_id = author.id))")))))
 
 (deftest dsl-insert
   (testing "Insert statement from values as maps"