address #352 by treating :'foo literally

src/honey/sql.cljc

@@ -167,12 +167,17 @@
 (defn sql-kw
   "Given a keyword, return a SQL representation of it as a string.
 
-  A `:kebab-case` keyword becomes a `KEBAB CASE` (uppercase) string
+  A keyword whose name begins with a single quote is left exactly as-is
-  with hyphens replaced by spaces, e.g., `:insert-into` => `INSERT INTO`.
+  (with the `:` and `'` removed), otherwise a `:kebab-case` keyword
+  becomes a `KEBAB CASE` (uppercase) string with hyphens replaced
+  by spaces, e.g., `:insert-into` => `INSERT INTO`.
 
   Any namespace qualifier is ignored."
   [k]
-  (-> k (name) (dehyphen) (upper-case)))
+  (let [n (name k)]
+    (if (= \' (first n))
+      (subs n 1 (count n))
+      (-> n (dehyphen) (upper-case)))))
 
 (defn- sym->kw
   "Given a symbol, produce a keyword, retaining the namespace

test/honey/sql_test.cljc

@@ -794,7 +794,16 @@ ORDER BY id = ? DESC
            (format {:select (keyword "%mixed-kebab.yum-yum/bar-bar.a-b/c-d")} :dialect :mysql :quoted-snake true)))
     (is (= ["SELECT RANSOM(`NoTe`)"]
            (format {:select [[[:ransom :NoTe]]]} :dialect :mysql)
-           (format {:select :%ransom.NoTe} :dialect :mysql)))))
+           (format {:select :%ransom.NoTe} :dialect :mysql))))
+  (testing "issue 352: literal function calls"
+    (is (= ["SELECT sysdate()"]
+           (format {:select [[[:'sysdate]]]})))
+    (is (= ["SELECT count(*)"]
+           (format {:select [[[:'count :*]]]})))
+    (is (= ["SELECT Mixed-Kebab(`yum-yum`)"]
+           (format {:select [[[:'Mixed-Kebab :yum-yum]]]} :dialect :mysql)))
+    (is (= ["SELECT other-project.other_dataset.other_function(?, ?)" 1 2]
+           (format {:select [[[:'other-project.other_dataset.other_function 1 2]]]})))))
 
 (deftest join-without-on-using
   ;; essentially issue 326