Merge pull request #21 from nicolasterral/master

Added unix-timestamp->timestamp function.

src/metabase/driver/athena.clj

@@ -137,6 +137,8 @@
 
 (defmethod sql.qp/current-datetime-fn :athena [_] (du/->Timestamp (System/currentTimeMillis)))
 
+(defmethod sql.qp/unix-timestamp->timestamp [:athena :seconds] [_ _ expr] (hsql/call :from_unixtime expr))
+
 (defmethod driver/date-add :athena [driver dt amount unit] (du/relative-date unit amount dt))
 
 ;; keyword function converts database-type variable to a symbol, so we use symbols above to map the types
@@ -262,4 +264,4 @@
                      :query (unprepare/unprepare driver (cons (:query query) (:params query)))}})))
 
 (defmethod driver/execute-query :athena [driver query]
-  (sql-jdbc.execute/execute-query driver (prepare-query driver, query)))
+  (sql-jdbc.execute/execute-query driver (prepare-query driver, query)))