From 2bb472d7a64e993cdccd78da0fc8483a74e07c50 Mon Sep 17 00:00:00 2001
From: Jakub Vrana <jakub@vrana.cz>
Date: Mon, 8 Feb 2021 14:12:39 +0100
Subject: [PATCH] PostgreSQL: Avoid exporting empty sequence last value

---
 adminer/drivers/pgsql.inc.php | 2 +-
 changes.txt                   | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index ef2fee5c..2114395f 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -777,7 +777,7 @@ AND typelem = 0"
 					: "SELECT * FROM $sequence_name"
 				));
 				$sequences[] = ($style == "DROP+CREATE" ? "DROP SEQUENCE IF EXISTS $sequence_name;\n" : "")
-					. "CREATE SEQUENCE $sequence_name INCREMENT $sq[increment_by] MINVALUE $sq[min_value] MAXVALUE $sq[max_value] START " . ($auto_increment ? $sq['last_value'] : 1) . " CACHE $sq[cache_value];";
+					. "CREATE SEQUENCE $sequence_name INCREMENT $sq[increment_by] MINVALUE $sq[min_value] MAXVALUE $sq[max_value]" . ($auto_increment && $sq['last_value'] ? " START $sq[last_value]" : "") . " CACHE $sq[cache_value];";
 			}
 		}
 
diff --git a/changes.txt b/changes.txt
index 8d551eb0..2ed0ca52 100644
--- a/changes.txt
+++ b/changes.txt
@@ -4,6 +4,7 @@ Add DB version to comment in export
 Support PHP 8 in create table (regression from 4.7.9)
 MySQL 8: Fix EXPLAIN in SQL command
 PostgreSQL: Create PRIMARY KEY for auto increment columns
+PostgreSQL: Avoid exporting empty sequence last value
 PostgreSQL PDO: Do not select NULL function for false values in edit
 
 Adminer 4.7.9 (released 2021-02-07):