From 2479e51a6b7b3ea017bd63abbf48a909ddd86e0d Mon Sep 17 00:00:00 2001 From: Daniel Lee Date: Tue, 20 Jun 2017 02:02:05 +0200 Subject: [PATCH] mysql: Null value should not be considered as previous value fixes #8655 --- pkg/tsdb/mysql/mysql.go | 3 +++ 1 file changed, 3 insertions(+) diff --git a/pkg/tsdb/mysql/mysql.go b/pkg/tsdb/mysql/mysql.go index d4bd9dbacc1..d647aff64f9 100644 --- a/pkg/tsdb/mysql/mysql.go +++ b/pkg/tsdb/mysql/mysql.go @@ -307,6 +307,9 @@ func (s *stringStringScan) Update(rows *sql.Rows) error { return err } + s.time = null.FloatFromPtr(nil) + s.value = null.FloatFromPtr(nil) + for i := 0; i < s.columnCount; i++ { if rb, ok := s.rowPtrs[i].(*sql.RawBytes); ok { s.rowValues[i] = string(*rb)