Index: modules/core/src/test/java/org/apache/ignite/issues/Ignite123456Test.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
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diff --git a/modules/core/src/test/java/org/apache/ignite/issues/Ignite123456Test.java b/modules/core/src/test/java/org/apache/ignite/issues/Ignite123456Test.java
new file mode 100644
--- /dev/null	(date 1648470765487)
+++ b/modules/core/src/test/java/org/apache/ignite/issues/Ignite123456Test.java	(date 1648470765487)
@@ -0,0 +1,114 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.issues;
+
+import org.apache.ignite.IgniteCache;
+import org.apache.ignite.cache.QueryEntity;
+import org.apache.ignite.cache.query.SqlFieldsQuery;
+import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
+import org.apache.ignite.configuration.IgniteConfiguration;
+import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
+import org.junit.Test;
+
+import java.util.Arrays;
+
+/**
+ * When entering a node, with a difference in the description of QueryEntity, according to the composition of the fields.
+ * An incorrect patch is generated - the name of the added field comes to the meta in lower case.
+ * In the test, the age field of the Person class is used as an example, which should come in uppercase,
+ * but comes in lowercase.
+ * The first node starts without a description of the age field in QueryEntity, the second with a description.
+ */
+public class Ignite123456Test extends GridCommonAbstractTest {
+    /**
+     * Start cluster nodes.
+     */
+    public static final int NODES_CNT = 2;
+
+    /**
+     * Count of backup partitions.
+     */
+    public static final int BACKUPS = 2;
+
+
+    @Override
+    protected IgniteConfiguration getConfiguration(String igniteInstanceName) throws Exception {
+        QueryEntity queryEntity = new QueryEntity(String.class, Person.class)
+                .setTableName("PERSON")
+                .addQueryField("id", Integer.class.getName(), null)
+                .addQueryField("name", String.class.getName(), null);
+
+        //if second node then add description age field
+        if (igniteInstanceName.equals("issues.Ignite123456Test1"))
+            queryEntity.addQueryField("age", Integer.class.getName(), null);
+
+        IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName)
+                .setActiveOnStart(false)
+                .setConsistentId(igniteInstanceName)
+                .setDataStorageConfiguration(new DataStorageConfiguration()
+                        .setDefaultDataRegionConfiguration(new DataRegionConfiguration()))
+                .setCacheConfiguration(
+                        new CacheConfiguration(DEFAULT_CACHE_NAME)
+                                .setBackups(BACKUPS)
+                                .setQueryEntities(Arrays.asList(queryEntity)));
+
+        return cfg;
+    }
+
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void afterTest() throws Exception {
+        stopAllGrids();
+    }
+
+    /**
+     *
+     */
+    @Test
+    public void testIssue() throws Exception {
+        startGrids(NODES_CNT);
+
+        grid(0).active(true);
+
+        IgniteCache igniteCache = grid(0).cache(DEFAULT_CACHE_NAME);
+
+        int querySizeUpper = igniteCache.query(new SqlFieldsQuery("select * from \"SYS\".TABLE_COLUMNS " +
+                        "where COLUMN_NAME='AGE' and TABLE_NAME='PERSON'"))
+                .getAll().size();
+
+        int querySizeLower = igniteCache.query(new SqlFieldsQuery("select * from \"SYS\".TABLE_COLUMNS " +
+                        "where COLUMN_NAME='age' and TABLE_NAME='PERSON'"))
+                .getAll().size();
+
+        assertEquals(1, querySizeUpper);
+        assertEquals(0, querySizeLower);
+    }
+
+    class Person {
+        private long id;
+
+        private String name;
+
+        private int age;
+    }
+}