[11.x] Use Default Schema Name on SQL Server (#50855)

* get default schema name on sqlsrv

* force re-run tests

* add test

* wip

* wip

* wip

* wip

* revert adding test

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* formatting

---------

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Database/Schema/Grammars/SqlServerGrammar.php

@@ -37,6 +37,16 @@ class SqlServerGrammar extends Grammar
      */
     protected $fluentCommands = ['Default'];
 
+    /**
+     * Compile a query to determine the name of the default schema.
+     *
+     * @return string
+     */
+    public function compileDefaultSchema()
+    {
+        return 'select schema_name()';
+    }
+
     /**
      * Compile a create database command.
      *

src/Illuminate/Database/Schema/SqlServerBuilder.php

@@ -42,6 +42,7 @@ public function hasTable($table)
     {
         [$schema, $table] = $this->parseSchemaAndTable($table);
 
+        $schema ??= $this->getDefaultSchema();
         $table = $this->connection->getTablePrefix().$table;
 
         foreach ($this->getTables() as $value) {
@@ -64,6 +65,7 @@ public function hasView($view)
     {
         [$schema, $view] = $this->parseSchemaAndTable($view);
 
+        $schema ??= $this->getDefaultSchema();
         $view = $this->connection->getTablePrefix().$view;
 
         foreach ($this->getViews() as $value) {
@@ -151,6 +153,16 @@ public function getForeignKeys($table)
         );
     }
 
+    /**
+     * Get the default schema for the connection.
+     *
+     * @return string
+     */
+    protected function getDefaultSchema()
+    {
+        return $this->connection->scalar($this->grammar->compileDefaultSchema());
+    }
+
     /**
      * Parse the database object reference and extract the schema and table.
      *
@@ -159,7 +171,7 @@ public function getForeignKeys($table)
      */
     protected function parseSchemaAndTable($reference)
     {
-        $parts = array_pad(explode('.', $reference, 2), -2, 'dbo');
+        $parts = array_pad(explode('.', $reference, 2), -2, null);
 
         if (str_contains($parts[1], '.')) {
             $database = $parts[0];

tests/Integration/Database/SchemaBuilderSchemaNameTest.php

@@ -425,6 +425,43 @@ public function testAutoIncrementStartingValue($connection)
         });
     }
 
+    #[DataProvider('connectionProvider')]
+    public function testHasTable($connection)
+    {
+        if ($this->driver !== 'sqlsrv') {
+            $this->markTestSkipped('Test requires a SQL Server connection.');
+        }
+
+        $db = DB::connection($connection);
+        $schema = $db->getSchemaBuilder();
+
+        try {
+            $db->statement("create login my_user with password = 'Passw0rd'");
+            $db->statement('create user my_user for login my_user');
+        } catch(\Illuminate\Database\QueryException $e) {
+            //
+        }
+
+        $db->statement('grant create table to my_user');
+        $db->statement('grant alter on SCHEMA::my_schema to my_user');
+        $db->statement("alter user my_user with default_schema = my_schema execute as user='my_user'");
+
+        config([
+            'database.connections.'.$connection.'.username' => 'my_user',
+            'database.connections.'.$connection.'.password' => 'Passw0rd',
+        ]);
+
+        $this->assertEquals('my_schema', $db->scalar('select schema_name()'));
+
+        $schema->create('table', function (Blueprint $table) {
+            $table->id();
+        });
+
+        $this->assertTrue($schema->hasTable('table'));
+        $this->assertTrue($schema->hasTable('my_schema.table'));
+        $this->assertFalse($schema->hasTable('dbo.table'));
+    }
+
     public static function connectionProvider(): array
     {
         return [