From 77d870df5d80363b8c97db912026cc18c676e36e Mon Sep 17 00:00:00 2001
From: Robert Schadek <rschadek@symmetryinvestments.com>
Date: Mon, 5 Aug 2019 10:23:39 +0100
Subject: [PATCH] Doc for Issue #142

---
 src/dpq2/query.d | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/dpq2/query.d b/src/dpq2/query.d
index 1781df43..47bb6b7c 100644
--- a/src/dpq2/query.d
+++ b/src/dpq2/query.d
@@ -17,6 +17,10 @@ import std.exception: enforce;
 mixin template Queries()
 {
     /// Perform SQL query to DB
+    /// It uses the old wire protocol and all values are returned in textual
+    /// form. This means that the dpq2.conv.to_d_types.as template will likely
+    /// not work for anything but strings.
+    /// Try to used execParams instead, even if now parameters are present.
     immutable (Answer) exec( string SQLcmd )
     {
         auto pgResult = PQexec(conn, toStringz( SQLcmd ));