From 9dbdc29118dad87f1a32d88d2697ca09c6d1102a Mon Sep 17 00:00:00 2001
From: Sven Klemm <sven@timescale.com>
Date: Wed, 26 Sep 2018 10:56:25 +0200
Subject: [PATCH] filter NULL values for column value suggestions

---
 public/app/plugins/datasource/postgres/meta_query.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/public/app/plugins/datasource/postgres/meta_query.ts b/public/app/plugins/datasource/postgres/meta_query.ts
index 7339a3e3882..fd13f3b4482 100644
--- a/public/app/plugins/datasource/postgres/meta_query.ts
+++ b/public/app/plugins/datasource/postgres/meta_query.ts
@@ -144,6 +144,7 @@ table_schema IN (
     let query = 'SELECT DISTINCT quote_literal(' + column + ')';
     query += ' FROM ' + this.target.table;
     query += ' WHERE $__timeFilter(' + this.target.timeColumn + ')';
+    query += ' AND ' + column + ' IS NOT NULL';
     query += ' ORDER BY 1 LIMIT 100';
     return query;
   }