Merge pull request #407 from Xazax-hun/CommandError

Handle alembic command error.

codechecker_lib/database_handler.py

@@ -15,6 +15,7 @@
 from abc import ABCMeta, abstractmethod
 
 import sqlalchemy
+from alembic.util import CommandError
 from alembic import command, config
 from sqlalchemy import event
 from sqlalchemy.engine import Engine
@@ -96,6 +97,11 @@ def _create_or_update_schema(self, use_migration=True):
         except sqlalchemy.exc.SQLAlchemyError as alch_err:
             LOG.error(str(alch_err))
             sys.exit(1)
+        except CommandError as cerr:
+            LOG.error("Database schema and CodeChecker is incompatible."
+                      "Please update CodeChecker.")
+            LOG.debug(str(cerr))
+            sys.exit(1)
 
     @abstractmethod
     def start(self, db_version_info, wait_for_start=True, init=False):