diff --git a/CHANGELOG.md b/CHANGELOG.md
index 033bc60f..c676514b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Chg #297: Remove `QueryBuilder::getColumnType()` child method as legacy code (@Tigrov)
 - Enh #300: Refactor insert default values (@Tigrov)
+- Bug #302: Refactor `DMLQueryBuilder`, related with yiisoft/db#746 (@Tigrov)
 
 ## 1.0.1 July 24, 2023
 
diff --git a/src/DMLQueryBuilder.php b/src/DMLQueryBuilder.php
index d2350126..516b76aa 100644
--- a/src/DMLQueryBuilder.php
+++ b/src/DMLQueryBuilder.php
@@ -9,13 +9,12 @@
 use Yiisoft\Db\Exception\InvalidConfigException;
 use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Expression\Expression;
-use Yiisoft\Db\Expression\ExpressionInterface;
 use Yiisoft\Db\Query\Query;
 use Yiisoft\Db\Query\QueryInterface;
 use Yiisoft\Db\QueryBuilder\AbstractDMLQueryBuilder;
 
 use function implode;
-use function reset;
+use function str_replace;
 
 /**
  * Implements a DML (Data Manipulation Language) SQL statements for MySQL, MariaDB.
@@ -50,8 +49,7 @@ public function resetSequence(string $table, int|string $value = null): string
             return 'ALTER TABLE ' . $tableName . ' AUTO_INCREMENT=' . $value . ';';
         }
 
-        $pk = $tableSchema->getPrimaryKey();
-        $key = (string) reset($pk);
+        $key = $tableSchema->getPrimaryKey()[0];
 
         return "SET @new_autoincrement_value := (SELECT MAX(`$key`) + 1 FROM $tableName);
 SET @sql = CONCAT('ALTER TABLE $tableName AUTO_INCREMENT =', @new_autoincrement_value);
@@ -67,12 +65,7 @@ public function upsert(
     ): string {
         $insertSql = $this->insert($table, $insertColumns, $params);
 
-        /** @psalm-var array $uniqueNames */
-        [$uniqueNames, , $updateNames] = $this->prepareUpsertColumns(
-            $table,
-            $insertColumns,
-            $updateColumns,
-        );
+        [$uniqueNames, , $updateNames] = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns);
 
         if (empty($uniqueNames)) {
             return $insertSql;
@@ -80,11 +73,9 @@ public function upsert(
 
         if ($updateColumns === true) {
             $updateColumns = [];
-            /** @psalm-var string $name */
-            foreach ($updateNames as $name) {
-                $updateColumns[$name] = new Expression(
-                    'VALUES(' . $this->quoter->quoteColumnName($name) . ')'
-                );
+            /** @psalm-var string[] $updateNames */
+            foreach ($updateNames as $quotedName) {
+                $updateColumns[$quotedName] = new Expression('VALUES(' . $quotedName . ')');
             }
         }
 
@@ -92,10 +83,6 @@ public function upsert(
             return str_replace('INSERT INTO', 'INSERT IGNORE INTO', $insertSql);
         }
 
-        /**
-         *  @psalm-var array<array-key, string> $updates
-         *  @psalm-var array<string, ExpressionInterface|string> $updateColumns
-         */
         [$updates, $params] = $this->prepareUpdateSets($table, $updateColumns, $params);
 
         return $insertSql . ' ON DUPLICATE KEY UPDATE ' . implode(', ', $updates);
@@ -115,12 +102,13 @@ public function upsert(
      * @throws InvalidConfigException
      * @throws NotSupportedException
      *
-     * @return array Array of column names, placeholders, values, and params.
+     * @return array Array of quoted column names, placeholders, values, and params.
+     * @psalm-return array{0: string[], 1: string[], 2: string, 3: array}
      */
     protected function prepareInsertValues(string $table, QueryInterface|array $columns, array $params = []): array
     {
         if (empty($columns)) {
-            return [[], [], ' VALUES ()', []];
+            return [[], [], 'VALUES ()', []];
         }
 
         return parent::prepareInsertValues($table, $columns, $params);
diff --git a/tests/Provider/QueryBuilderProvider.php b/tests/Provider/QueryBuilderProvider.php
index 94204c1f..14bdb263 100644
--- a/tests/Provider/QueryBuilderProvider.php
+++ b/tests/Provider/QueryBuilderProvider.php
@@ -118,6 +118,10 @@ public static function upsert(): array
                 3 => 'INSERT INTO `T_upsert` (`email`, `address`, `status`, `profile_id`) VALUES (:qp0, :qp1, :qp2, :qp3) ' .
                     'ON DUPLICATE KEY UPDATE `address`=VALUES(`address`), `status`=VALUES(`status`), `profile_id`=VALUES(`profile_id`)',
             ],
+            'regular values with unique at not the first position' => [
+                3 => 'INSERT INTO `T_upsert` (`address`, `email`, `status`, `profile_id`) VALUES (:qp0, :qp1, :qp2, :qp3) ' .
+                    'ON DUPLICATE KEY UPDATE `address`=VALUES(`address`), `status`=VALUES(`status`), `profile_id`=VALUES(`profile_id`)',
+            ],
             'regular values with update part' => [
                 3 => 'INSERT INTO `T_upsert` (`email`, `address`, `status`, `profile_id`) VALUES (:qp0, :qp1, :qp2, :qp3) ' .
                     'ON DUPLICATE KEY UPDATE `address`=:qp4, `status`=:qp5, `orders`=T_upsert.orders + 1',
diff --git a/tests/QueryBuilderTest.php b/tests/QueryBuilderTest.php
index d73e355f..b58f1ad4 100644
--- a/tests/QueryBuilderTest.php
+++ b/tests/QueryBuilderTest.php
@@ -4,7 +4,6 @@
 
 namespace Yiisoft\Db\Mysql\Tests;
 
-use Generator;
 use Throwable;
 use Yiisoft\Db\Exception\Exception;
 use Yiisoft\Db\Exception\InvalidArgumentException;
@@ -143,7 +142,7 @@ public function testAddUnique(string $name, string $table, array|string $columns
      * @throws InvalidArgumentException
      * @throws NotSupportedException
      */
-    public function testBatchInsert(string $table, array $columns, iterable|Generator $rows, string $expected): void
+    public function testBatchInsert(string $table, array $columns, iterable $rows, string $expected): void
     {
         parent::testBatchInsert($table, $columns, $rows, $expected);
     }