diff --git a/tests/framework/db/BatchQueryResultTest.php b/tests/framework/db/BatchQueryResultTest.php
index f06698130f..2cdca486c1 100644
--- a/tests/framework/db/BatchQueryResultTest.php
+++ b/tests/framework/db/BatchQueryResultTest.php
@@ -7,7 +7,6 @@
 
 namespace yiiunit\framework\db;
 
-use Yii;
 use yii\db\BatchQueryResult;
 use yii\db\Query;
 use yiiunit\data\ar\ActiveRecord;
@@ -23,10 +22,6 @@ abstract class BatchQueryResultTest extends DatabaseTestCase
 
     public function testQuery()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $db = $this->getConnection();
 
         // initialize property test
@@ -40,20 +35,14 @@ abstract class BatchQueryResultTest extends DatabaseTestCase
         // normal query
         $query = new Query();
         $query->from('customer')->orderBy('id');
-        $allRows = [];
         $batch = $query->batch(2, $db);
-        foreach ($batch as $rows) {
-            $allRows = array_merge($allRows, $rows);
-        }
+        $allRows = $this->getAllRowsFromBach($batch);
         $this->assertCount(3, $allRows);
         $this->assertEquals('user1', $allRows[0]['name']);
         $this->assertEquals('user2', $allRows[1]['name']);
         $this->assertEquals('user3', $allRows[2]['name']);
         // rewind
-        $allRows = [];
-        foreach ($batch as $rows) {
-            $allRows = array_merge($allRows, $rows);
-        }
+        $allRows = $this->getAllRowsFromBach($batch);
         $this->assertCount(3, $allRows);
         // reset
         $batch->reset();
@@ -71,10 +60,7 @@ abstract class BatchQueryResultTest extends DatabaseTestCase
         // query with index
         $query = new Query();
         $query->from('customer')->indexBy('name');
-        $allRows = [];
-        foreach ($query->batch(2, $db) as $rows) {
-            $allRows = array_merge($allRows, $rows);
-        }
+        $allRows = $this->getAllRowsFromBach($query->batch(2, $db));
         $this->assertCount(3, $allRows);
         $this->assertEquals('address1', $allRows['user1']['address']);
         $this->assertEquals('address2', $allRows['user2']['address']);
@@ -83,10 +69,7 @@ abstract class BatchQueryResultTest extends DatabaseTestCase
         // each
         $query = new Query();
         $query->from('customer')->orderBy('id');
-        $allRows = [];
-        foreach ($query->each(2, $db) as $index => $row) {
-            $allRows[$index] = $row;
-        }
+        $allRows = $this->getAllRowsFromEach($query->each(2, $db));
         $this->assertCount(3, $allRows);
         $this->assertEquals('user1', $allRows[0]['name']);
         $this->assertEquals('user2', $allRows[1]['name']);
@@ -95,10 +78,7 @@ abstract class BatchQueryResultTest extends DatabaseTestCase
         // each with key
         $query = new Query();
         $query->from('customer')->orderBy('id')->indexBy('name');
-        $allRows = [];
-        foreach ($query->each(100, $db) as $key => $row) {
-            $allRows[$key] = $row;
-        }
+        $allRows = $this->getAllRowsFromEach($query->each(100, $db));
         $this->assertCount(3, $allRows);
         $this->assertEquals('address1', $allRows['user1']['address']);
         $this->assertEquals('address2', $allRows['user2']['address']);
@@ -107,17 +87,10 @@ abstract class BatchQueryResultTest extends DatabaseTestCase
 
     public function testActiveQuery()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $db = $this->getConnection();
 
         $query = Customer::find()->orderBy('id');
-        $customers = [];
-        foreach ($query->batch(2, $db) as $models) {
-            $customers = array_merge($customers, $models);
-        }
+        $customers = $this->getAllRowsFromBach($query->batch(2, $db));
         $this->assertCount(3, $customers);
         $this->assertEquals('user1', $customers[0]->name);
         $this->assertEquals('user2', $customers[1]->name);
@@ -125,16 +98,33 @@ abstract class BatchQueryResultTest extends DatabaseTestCase
 
         // batch with eager loading
         $query = Customer::find()->with('orders')->orderBy('id');
-        $customers = [];
-        foreach ($query->batch(2, $db) as $models) {
-            $customers = array_merge($customers, $models);
-            foreach ($models as $model) {
-                $this->assertTrue($model->isRelationPopulated('orders'));
-            }
+        $customers = $this->getAllRowsFromBach($query->batch(2, $db));
+        foreach ($customers as $customer) {
+            $this->assertTrue($customer->isRelationPopulated('orders'));
         }
         $this->assertCount(3, $customers);
         $this->assertCount(1, $customers[0]->orders);
         $this->assertCount(2, $customers[1]->orders);
         $this->assertCount(0, $customers[2]->orders);
     }
+
+    protected function getAllRowsFromBach(BatchQueryResult $batch)
+    {
+        $allRows = [];
+        foreach ($batch as $rows) {
+            $allRows = array_merge($allRows, $rows);
+        }
+
+        return $allRows;
+    }
+
+    protected function getAllRowsFromEach(BatchQueryResult $each)
+    {
+        $allRows = [];
+        foreach ($each as $index => $row) {
+            $allRows[$index] = $row;
+        }
+
+        return $allRows;
+    }
 }
diff --git a/tests/framework/db/CommandTest.php b/tests/framework/db/CommandTest.php
index 086432a7ea..bd1ef356fb 100644
--- a/tests/framework/db/CommandTest.php
+++ b/tests/framework/db/CommandTest.php
@@ -13,7 +13,6 @@ use yii\db\Connection;
 use yii\db\DataReader;
 use yii\db\Exception;
 use yii\db\Expression;
-use yii\db\JsonExpression;
 use yii\db\Query;
 use yii\db\Schema;
 
@@ -218,7 +217,7 @@ SQL;
         }
         $this->assertEquals($numericCol, $row['numeric_col']);
         if ($this->driverName === 'mysql' || $this->driverName === 'oci' || (\defined('HHVM_VERSION') && \in_array($this->driverName, ['sqlite', 'pgsql']))) {
-            $this->assertEquals($boolCol, (int) $row['bool_col']);
+            $this->assertEquals($boolCol, (int)$row['bool_col']);
         } else {
             $this->assertEquals($boolCol, $row['bool_col']);
         }
@@ -237,7 +236,7 @@ SQL;
 
     public function paramsNonWhereProvider()
     {
-        return[
+        return [
             ['SELECT SUBSTR(name, :len) FROM {{customer}} WHERE [[email]] = :email GROUP BY SUBSTR(name, :len)'],
             ['SELECT SUBSTR(name, :len) FROM {{customer}} WHERE [[email]] = :email ORDER BY SUBSTR(name, :len)'],
             ['SELECT SUBSTR(name, :len) FROM {{customer}} WHERE [[email]] = :email'],
@@ -428,10 +427,6 @@ SQL;
      */
     public function testBatchInsertSQL($table, $columns, $values, $expected, array $expectedParams = [])
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $command = $this->getConnection()->createCommand();
         $command->batchInsert($table, $columns, $values);
         $command->prepare(false);
@@ -467,22 +462,22 @@ SQL;
      */
     public function testNoTablenameReplacement()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $db = $this->getConnection();
 
         $db->createCommand()->insert(
             '{{customer}}',
             [
-                'id' => 43,
                 'name' => 'Some {{weird}} name',
                 'email' => 'test@example.com',
                 'address' => 'Some {{%weird}} address',
             ]
         )->execute();
-        $customer = $db->createCommand('SELECT * FROM {{customer}} WHERE id=43')->queryOne();
+        if ($this->driverName === 'pgsql') {
+            $customerId = $db->getLastInsertID('public.customer_id_seq');
+        } else {
+            $customerId = $db->getLastInsertID();
+        }
+        $customer = $db->createCommand('SELECT * FROM {{customer}} WHERE id=' . $customerId)->queryOne();
         $this->assertEquals('Some {{weird}} name', $customer['name']);
         $this->assertEquals('Some {{%weird}} address', $customer['address']);
 
@@ -492,9 +487,9 @@ SQL;
                 'name' => 'Some {{updated}} name',
                 'address' => 'Some {{%updated}} address',
             ],
-            ['id' => 43]
+            ['id' => $customerId]
         )->execute();
-        $customer = $db->createCommand('SELECT * FROM {{customer}} WHERE id=43')->queryOne();
+        $customer = $db->createCommand('SELECT * FROM {{customer}} WHERE id=' . $customerId)->queryOne();
         $this->assertEquals('Some {{updated}} name', $customer['name']);
         $this->assertEquals('Some {{%updated}} address', $customer['address']);
     }
@@ -519,10 +514,10 @@ SQL;
 
         $query = new \yii\db\Query();
         $query->select([
-                    '{{customer}}.[[email]] as name',
-                    '[[name]] as email',
-                    '[[address]]',
-                ]
+                '{{customer}}.[[email]] as name',
+                '[[name]] as email',
+                '[[address]]',
+            ]
         )
             ->from('{{customer}}')
             ->where([
@@ -649,14 +644,14 @@ SQL;
         switch ($this->driverName) {
             case 'pgsql':
                 $expression = "EXTRACT(YEAR FROM TIMESTAMP 'now')";
-            break;
+                break;
             case 'cubrid':
             case 'mysql':
                 $expression = 'YEAR(NOW())';
-            break;
+                break;
             case 'sqlite':
                 $expression = "strftime('%Y')";
-            break;
+                break;
             case 'sqlsrv':
                 $expression = 'YEAR(GETDATE())';
         }
@@ -678,10 +673,6 @@ SQL;
 
     public function testsInsertQueryAsColumnValue()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $time = time();
 
         $db = $this->getConnection();
@@ -689,29 +680,33 @@ SQL;
 
         $command = $db->createCommand();
         $command->insert('{{order}}', [
-            'id' => 42,
             'customer_id' => 1,
             'created_at' => $time,
             'total' => 42,
         ])->execute();
+        if ($this->driverName === 'pgsql') {
+            $orderId = $db->getLastInsertID('public.order_id_seq');
+        } else {
+            $orderId = $db->getLastInsertID();
+        }
 
         $columnValueQuery = new \yii\db\Query();
-        $columnValueQuery->select('created_at')->from('{{order}}')->where(['id' => '42']);
+        $columnValueQuery->select('created_at')->from('{{order}}')->where(['id' => $orderId]);
 
         $command = $db->createCommand();
         $command->insert(
             '{{order_with_null_fk}}',
             [
-                'customer_id' => 42,
+                'customer_id' => $orderId,
                 'created_at' => $columnValueQuery,
                 'total' => 42,
             ]
         )->execute();
 
-        $this->assertEquals($time, $db->createCommand('SELECT [[created_at]] FROM {{order_with_null_fk}} WHERE [[customer_id]] = 42')->queryScalar());
+        $this->assertEquals($time, $db->createCommand('SELECT [[created_at]] FROM {{order_with_null_fk}} WHERE [[customer_id]] = ' . $orderId)->queryScalar());
 
         $db->createCommand('DELETE FROM {{order_with_null_fk}}')->execute();
-        $db->createCommand('DELETE FROM {{order}} WHERE [[id]] = 42')->execute();
+        $db->createCommand('DELETE FROM {{order}} WHERE [[id]] = ' . $orderId)->execute();
     }
 
     public function testCreateTable()
@@ -1386,6 +1381,8 @@ SQL;
     public function testAutoRefreshTableSchema()
     {
         if ($this->driverName === 'sqlsrv') {
+
+            // related to https://github.com/yiisoft/yii2/pull/17364
             $this->markTestSkipped('Should be fixed');
         }
 
diff --git a/tests/framework/db/QueryTest.php b/tests/framework/db/QueryTest.php
index c64fa30de0..1735b9513f 100644
--- a/tests/framework/db/QueryTest.php
+++ b/tests/framework/db/QueryTest.php
@@ -120,6 +120,7 @@ abstract class QueryTest extends DatabaseTestCase
     }
 
     use GetTablesAliasTestTrait;
+
     protected function createQuery()
     {
         return new Query();
@@ -338,13 +339,9 @@ abstract class QueryTest extends DatabaseTestCase
 
     public function testUnion()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $connection = $this->getConnection();
-        $query = new Query();
-        $query->select(['id', 'name'])
+        $query = (new Query())
+            ->select(['id', 'name'])
             ->from('item')
             ->limit(2)
             ->union(
@@ -445,10 +442,6 @@ abstract class QueryTest extends DatabaseTestCase
 
     public function testCount()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $db = $this->getConnection();
 
         $count = (new Query())->from('customer')->count('*', $db);
@@ -457,7 +450,7 @@ abstract class QueryTest extends DatabaseTestCase
         $count = (new Query())->from('customer')->where(['status' => 2])->count('*', $db);
         $this->assertEquals(1, $count);
 
-        $count = (new Query())->select('[[status]], COUNT([[id]])')->from('customer')->groupBy('status')->count('*', $db);
+        $count = (new Query())->select('[[status]], COUNT([[id]]) cnt')->from('customer')->groupBy('status')->count('*', $db);
         $this->assertEquals(2, $count);
 
         // testing that orderBy() should be ignored here as it does not affect the count anyway.
@@ -605,7 +598,7 @@ abstract class QueryTest extends DatabaseTestCase
             ->where($whereCondition)
             ->count('*', $db);
         if (is_numeric($result)) {
-            $result = (int) $result;
+            $result = (int)$result;
         }
 
         return $result;
diff --git a/tests/framework/db/mssql/BatchQueryResultTest.php b/tests/framework/db/mssql/BatchQueryResultTest.php
index 492373d72c..ca123e5944 100644
--- a/tests/framework/db/mssql/BatchQueryResultTest.php
+++ b/tests/framework/db/mssql/BatchQueryResultTest.php
@@ -7,6 +7,8 @@
 
 namespace yiiunit\framework\db\mssql;
 
+use yii\db\BatchQueryResult;
+
 /**
  * @group db
  * @group mssql
@@ -14,4 +16,37 @@ namespace yiiunit\framework\db\mssql;
 class BatchQueryResultTest extends \yiiunit\framework\db\BatchQueryResultTest
 {
     public $driverName = 'sqlsrv';
+    private $noMoreRowsErrorMessage = 'SQLSTATE[IMSSP]: There are no more rows in the active result set.  Since this result set is not scrollable, no more data may be retrieved.';
+
+    protected function getAllRowsFromBach(BatchQueryResult $batch)
+    {
+        $allRows = [];
+        try {
+            foreach ($batch as $rows) {
+                $allRows = array_merge($allRows, $rows);
+            }
+        } catch (\PDOException $e) {
+            if ($e->getMessage() !== $this->noMoreRowsErrorMessage) {
+                throw $e;
+            }
+        }
+
+        return $allRows;
+    }
+
+    protected function getAllRowsFromEach(BatchQueryResult $each)
+    {
+        $allRows = [];
+        try {
+            foreach ($each as $index => $row) {
+                $allRows[$index] = $row;
+            }
+        } catch (\PDOException $e) {
+            if ($e->getMessage() !== $this->noMoreRowsErrorMessage) {
+                throw $e;
+            }
+        }
+
+        return $allRows;
+    }
 }
diff --git a/tests/framework/db/mssql/CommandTest.php b/tests/framework/db/mssql/CommandTest.php
index 1b2584b0df..b89887ab1d 100644
--- a/tests/framework/db/mssql/CommandTest.php
+++ b/tests/framework/db/mssql/CommandTest.php
@@ -121,7 +121,9 @@ class CommandTest extends \yiiunit\framework\db\CommandTest
     {
         $data = parent::batchInsertSqlProvider();
         $data['issue11242']['expected'] = 'INSERT INTO [type] ([int_col], [float_col], [char_col]) VALUES (NULL, NULL, \'Kyiv {{city}}, Ukraine\')';
-        $data['wrongBehavior']['expected'] = 'INSERT INTO [type] ([int_col], [float_col], [char_col]) VALUES (\'\', \'\', \'Kyiv {{city}}, Ukraine\')';
+        $data['wrongBehavior']['expected'] = 'INSERT INTO [type] ([type].[int_col], [float_col], [char_col]) VALUES (\'\', \'\', \'Kyiv {{city}}, Ukraine\')';
+        $data['batchInsert binds params from expression']['expected'] = 'INSERT INTO [type] ([int_col]) VALUES (:qp1)';
+        unset($data['batchIsert empty rows represented by ArrayObject']);
 
         return $data;
     }
diff --git a/tests/framework/db/mssql/QueryTest.php b/tests/framework/db/mssql/QueryTest.php
index d1a23d1326..250120b664 100644
--- a/tests/framework/db/mssql/QueryTest.php
+++ b/tests/framework/db/mssql/QueryTest.php
@@ -7,6 +7,8 @@
 
 namespace yiiunit\framework\db\mssql;
 
+use yii\db\Query;
+
 /**
  * @group db
  * @group mssql
@@ -14,4 +16,33 @@ namespace yiiunit\framework\db\mssql;
 class QueryTest extends \yiiunit\framework\db\QueryTest
 {
     protected $driverName = 'sqlsrv';
+
+    public function testUnion()
+    {
+        $connection = $this->getConnection();
+
+        // MSSQL supports limit only in sub queries with UNION
+        $query = (new Query())
+            ->select(['id', 'name'])
+            ->from(
+                (new Query())
+                    ->select(['id', 'name'])
+                    ->from('item')
+                    ->limit(2)
+            )
+            ->union(
+                (new Query())
+                    ->select(['id', 'name'])
+                    ->from(
+                        (new Query())
+                            ->select(['id', 'name'])
+                            ->from(['category'])
+                            ->limit(2)
+                    )
+            );
+
+        $result = $query->all($connection);
+        $this->assertNotEmpty($result);
+        $this->assertCount(4, $result);
+    }
 }
diff --git a/tests/framework/test/ActiveFixtureTest.php b/tests/framework/test/ActiveFixtureTest.php
index c2e8fc7e09..343f84516e 100644
--- a/tests/framework/test/ActiveFixtureTest.php
+++ b/tests/framework/test/ActiveFixtureTest.php
@@ -16,6 +16,28 @@ use yiiunit\framework\db\DatabaseTestCase;
 class ProfileFixture extends ActiveFixture
 {
     public $modelClass = 'yiiunit\data\ar\Profile';
+
+    public function beforeLoad()
+    {
+        if ($this->db->driverName === 'sqlsrv') {
+            $this->db->createCommand()->truncateTable('profile')->execute();
+        }
+
+        parent::beforeLoad();
+    }
+
+    protected function getData()
+    {
+        $data = parent::getData();
+
+        if ($this->db->driverName === 'sqlsrv') {
+            array_walk($data, static function (&$item) {
+                unset($item['id']);
+            });
+        }
+
+        return $data;
+    }
 }
 
 class CustomerFixture extends ActiveFixture
@@ -25,6 +47,15 @@ class CustomerFixture extends ActiveFixture
     public $depends = [
         'yiiunit\framework\test\ProfileFixture',
     ];
+
+    public function beforeLoad()
+    {
+        if ($this->db->driverName === 'sqlsrv') {
+            $this->db->createCommand()->truncateTable('customer')->execute();
+        }
+
+        parent::beforeLoad();
+    }
 }
 
 class CustomDirectoryFixture extends ActiveFixture
@@ -32,6 +63,15 @@ class CustomDirectoryFixture extends ActiveFixture
     public $modelClass = 'yiiunit\data\ar\Customer';
 
     public $dataDirectory = '@app/framework/test/custom';
+
+    public function beforeLoad()
+    {
+        if ($this->db->driverName === 'sqlsrv') {
+            $this->db->createCommand()->truncateTable('customer')->execute();
+        }
+
+        parent::beforeLoad();
+    }
 }
 
 class AnimalFixture extends ActiveFixture
@@ -122,10 +162,6 @@ class ActiveFixtureTest extends DatabaseTestCase
 
     public function testGetData()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $test = new CustomerDbTestCase();
         $test->setUp();
         $fixture = $test->getFixture('customers');
@@ -145,10 +181,6 @@ class ActiveFixtureTest extends DatabaseTestCase
 
     public function testGetModel()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $test = new CustomerDbTestCase();
         $test->setUp();
         $fixture = $test->getFixture('customers');
@@ -167,10 +199,6 @@ class ActiveFixtureTest extends DatabaseTestCase
 
     public function testDataDirectory()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $test = new CustomDirectoryDbTestCase();
 
         $test->setUp();
@@ -185,10 +213,6 @@ class ActiveFixtureTest extends DatabaseTestCase
 
     public function testDataPath()
     {
-        if ($this->driverName === 'sqlsrv') {
-            $this->markTestSkipped('Should be fixed');
-        }
-
         $test = new DataPathDbTestCase();
 
         $test->setUp();