From d1175ff471ff814e652f48cb97132dae51939037 Mon Sep 17 00:00:00 2001
From: Louis Lam <louislam@users.noreply.github.com>
Date: Wed, 15 Feb 2023 02:50:49 +0800
Subject: [PATCH] Fix #2777

---
 server/util-server.js | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/server/util-server.js b/server/util-server.js
index edce2890..e099f673 100644
--- a/server/util-server.js
+++ b/server/util-server.js
@@ -292,14 +292,23 @@ exports.postgresQuery = function (connectionString, query) {
                 client.end();
             } else {
                 // Connected here
-                client.query(query, (err, res) => {
-                    if (err) {
-                        reject(err);
-                    } else {
-                        resolve(res);
+                try {
+                    // No query provided by user, use SELECT 1
+                    if (!query || (typeof query === "string" && query.trim() === "")) {
+                        query = "SELECT 1";
                     }
-                    client.end();
-                });
+
+                    client.query(query, (err, res) => {
+                        if (err) {
+                            reject(err);
+                        } else {
+                            resolve(res);
+                        }
+                        client.end();
+                    });
+                } catch (e) {
+                    reject(e);
+                }
             }
         });