From 204d1310adca1f03cf10843c403249e1e4bb394b Mon Sep 17 00:00:00 2001
From: Kirill Shvakov <shvakov@gmail.com>
Date: Mon, 5 Mar 2018 08:52:04 +0200
Subject: [PATCH] #89 #93 rollback: reset block buffers and close connection

---
 clickhouse.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/clickhouse.go b/clickhouse.go
index c0dd22863c..955de6c380 100644
--- a/clickhouse.go
+++ b/clickhouse.go
@@ -154,9 +154,13 @@ func (ch *clickhouse) Rollback() error {
 	if !ch.inTransaction {
 		return sql.ErrTxDone
 	}
+	if ch.block != nil {
+		ch.block.Reset()
+	}
 	ch.block = nil
+	ch.buffer = nil
 	ch.inTransaction = false
-	return nil
+	return ch.conn.Close()
 }
 
 func (ch *clickhouse) CheckNamedValue(nv *driver.NamedValue) error {