🐛 Fixed migration

migrations/versions/17ea75679da8_init.py

@@ -8,7 +8,7 @@ Create Date: 2022-06-10 18:01:51.061536
 from alembic import op
 import sqlalchemy as sa
 import ormar
-
+from sqlalchemy.engine.reflection import Inspector
 
 # revision identifiers, used by Alembic.
 revision = "17ea75679da8"
@@ -19,6 +19,10 @@ depends_on = None
 
 def upgrade() -> None:
     # ### commands auto generated by Alembic - please adjust! ###
+    conn = op.get_bind()
+    inspector = Inspector.from_engine(conn)
+    tables = inspector.get_table_names()
+    if "users" not in tables:
         op.create_table(
             "users",
             sa.Column("id", ormar.fields.sqlalchemy_uuid.CHAR(32), nullable=False),
@@ -34,6 +38,7 @@ def upgrade() -> None:
             sa.UniqueConstraint("username"),
             sa.UniqueConstraint("verify_key"),
         )
+    if "quiz" not in tables:
         op.create_table(
             "quiz",
             sa.Column("id", ormar.fields.sqlalchemy_uuid.CHAR(32), nullable=False),
@@ -48,6 +53,7 @@ def upgrade() -> None:
             sa.PrimaryKeyConstraint("id"),
             sa.UniqueConstraint("id"),
         )
+    if "user_sessions" not in tables:
         op.create_table(
             "user_sessions",
             sa.Column("id", ormar.fields.sqlalchemy_uuid.CHAR(32), nullable=False),