diff --git a/superset/db_engine_specs/__init__.py b/superset/db_engine_specs/__init__.py
index a115fa15bd4..2c543cf1d76 100644
--- a/superset/db_engine_specs/__init__.py
+++ b/superset/db_engine_specs/__init__.py
@@ -53,7 +53,7 @@ def is_engine_spec(attr: Any) -> bool:
     )
 
 
-def get_engine_specs() -> Dict[str, Type[BaseEngineSpec]]:
+def load_engine_specs() -> List[Type[BaseEngineSpec]]:
     engine_specs: List[Type[BaseEngineSpec]] = []
 
     # load standard engines
@@ -75,6 +75,12 @@ def get_engine_specs() -> Dict[str, Type[BaseEngineSpec]]:
             continue
         engine_specs.append(engine_spec)
 
+    return engine_specs
+
+
+def get_engine_specs() -> Dict[str, Type[BaseEngineSpec]]:
+    engine_specs = load_engine_specs()
+
     # build map from name/alias -> spec
     engine_specs_map: Dict[str, Type[BaseEngineSpec]] = {}
     for engine_spec in engine_specs:
@@ -121,11 +127,16 @@ def get_available_engine_specs() -> Dict[Type[BaseEngineSpec], Set[str]]:
         except Exception:  # pylint: disable=broad-except
             logger.warning("Unable to load SQLAlchemy dialect: %s", dialect)
         else:
-            drivers[dialect.name].add(getattr(dialect, "driver", dialect.name))
+            backend = dialect.name
+            if isinstance(backend, bytes):
+                backend = backend.decode()
+            driver = getattr(dialect, "driver", dialect.name)
+            if isinstance(driver, bytes):
+                driver = driver.decode()
+            drivers[backend].add(driver)
 
-    engine_specs = get_engine_specs()
-    return {
-        engine_specs[backend]: drivers
-        for backend, drivers in drivers.items()
-        if backend in engine_specs
-    }
+    available_engines = {}
+    for engine_spec in load_engine_specs():
+        available_engines[engine_spec] = drivers[engine_spec.engine]
+
+    return available_engines
diff --git a/superset/db_engine_specs/drill.py b/superset/db_engine_specs/drill.py
index fc3d833cfff..6578965778b 100644
--- a/superset/db_engine_specs/drill.py
+++ b/superset/db_engine_specs/drill.py
@@ -29,6 +29,7 @@ class DrillEngineSpec(BaseEngineSpec):
 
     engine = "drill"
     engine_name = "Apache Drill"
+    default_driver = "sadrill"
 
     _time_grain_expressions = {
         None: "{col}",
diff --git a/superset/db_engine_specs/hive.py b/superset/db_engine_specs/hive.py
index c753b6b7d7d..73cfb0e7119 100644
--- a/superset/db_engine_specs/hive.py
+++ b/superset/db_engine_specs/hive.py
@@ -545,3 +545,8 @@ class HiveEngineSpec(PrestoEngineSpec):
             or parsed_query.is_set()
             or parsed_query.is_show()
         )
+
+
+class SparkEngineSpec(HiveEngineSpec):
+
+    engine_name = "Apache Spark SQL"
diff --git a/superset/db_engine_specs/mssql.py b/superset/db_engine_specs/mssql.py
index c24d40d23b5..ff6b5326d39 100644
--- a/superset/db_engine_specs/mssql.py
+++ b/superset/db_engine_specs/mssql.py
@@ -44,7 +44,7 @@ CONNECTION_HOST_DOWN_REGEX = re.compile(
 
 class MssqlEngineSpec(BaseEngineSpec):
     engine = "mssql"
-    engine_name = "Microsoft SQL"
+    engine_name = "Microsoft SQL Server"
     limit_method = LimitMethod.WRAP_SQL
     max_column_name_length = 128
 
@@ -126,3 +126,9 @@ class MssqlEngineSpec(BaseEngineSpec):
                 "have an alias on MSSQL. For example: SELECT COUNT(*) AS C1 FROM TABLE1"
             )
         return f"{cls.engine} error: {cls._extract_error_message(ex)}"
+
+
+class AzureSynapseSpec(MssqlEngineSpec):
+    engine = "mssql"
+    engine_name = "Azure Synapse"
+    default_driver = "pyodbc"
diff --git a/tests/integration_tests/databases/api_tests.py b/tests/integration_tests/databases/api_tests.py
index 582e40e716f..2c9fbb9f9cc 100644
--- a/tests/integration_tests/databases/api_tests.py
+++ b/tests/integration_tests/databases/api_tests.py
@@ -986,7 +986,7 @@ class TestDatabaseApi(SupersetTestCase):
         expected_response = {
             "errors": [
                 {
-                    "message": "Could not load database driver: MssqlEngineSpec",
+                    "message": "Could not load database driver: AzureSynapseSpec",
                     "error_type": "GENERIC_COMMAND_ERROR",
                     "level": "warning",
                     "extra": {
diff --git a/tests/integration_tests/db_engine_specs/mssql_tests.py b/tests/integration_tests/db_engine_specs/mssql_tests.py
index 005493dc87f..c14515b27c8 100644
--- a/tests/integration_tests/db_engine_specs/mssql_tests.py
+++ b/tests/integration_tests/db_engine_specs/mssql_tests.py
@@ -169,7 +169,7 @@ Unable to connect: Adaptive Server is unavailable or does not exist (locahost)
                 message='The hostname "locahost" cannot be resolved.',
                 level=ErrorLevel.ERROR,
                 extra={
-                    "engine_name": "Microsoft SQL",
+                    "engine_name": "Microsoft SQL Server",
                     "issue_codes": [
                         {
                             "code": 1007,
@@ -199,7 +199,7 @@ Net-Lib error during Connection refused (61)
                 message='Port 12345 on hostname "localhost" refused the connection.',
                 level=ErrorLevel.ERROR,
                 extra={
-                    "engine_name": "Microsoft SQL",
+                    "engine_name": "Microsoft SQL Server",
                     "issue_codes": [
                         {"code": 1008, "message": "Issue 1008 - The port is closed."}
                     ],
@@ -229,7 +229,7 @@ Net-Lib error during Operation timed out (60)
                 ),
                 level=ErrorLevel.ERROR,
                 extra={
-                    "engine_name": "Microsoft SQL",
+                    "engine_name": "Microsoft SQL Server",
                     "issue_codes": [
                         {
                             "code": 1009,
@@ -262,7 +262,7 @@ Net-Lib error during Operation timed out (60)
                 ),
                 level=ErrorLevel.ERROR,
                 extra={
-                    "engine_name": "Microsoft SQL",
+                    "engine_name": "Microsoft SQL Server",
                     "issue_codes": [
                         {
                             "code": 1009,
@@ -292,7 +292,7 @@ Adaptive Server connection failed (mssqldb.cxiotftzsypc.us-west-2.rds.amazonaws.
                 error_type=SupersetErrorType.CONNECTION_ACCESS_DENIED_ERROR,
                 level=ErrorLevel.ERROR,
                 extra={
-                    "engine_name": "Microsoft SQL",
+                    "engine_name": "Microsoft SQL Server",
                     "issue_codes": [
                         {
                             "code": 1014,