From 6ce4a130b5414d524283afd0838c68cbed0c32e2 Mon Sep 17 00:00:00 2001
From: crandeng <59216091+crandeng@users.noreply.github.com>
Date: Thu, 8 Oct 2020 02:40:41 +0800
Subject: [PATCH] Don't add joined-field twice.

The join-relationship field should not be added to 'columnExpressions', It's conflicted with the joined table field. Which caused 'ResultSet contains [join-field] multiple times';
---
 .../org/springframework/data/jdbc/core/convert/SqlGenerator.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/SqlGenerator.java b/spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/SqlGenerator.java
index f04177b500..f6afff8bd1 100644
--- a/spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/SqlGenerator.java
+++ b/spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/SqlGenerator.java
@@ -428,6 +428,7 @@ private SelectBuilder.SelectWhere selectBuilder(Collection<SqlIdentifier> keyCol
 			Join join = getJoin(extPath);
 			if (join != null) {
 				joinTables.add(join);
+				continue;
 			}
 
 			Column column = getColumn(extPath);