[add] migration script

api/migrations/versions/ef0787b85c35_202602061233.py

@@ -0,0 +1,32 @@
+"""202602061233
+
+Revision ID: ef0787b85c35
+Revises: 9b28b66cf8e8
+Create Date: 2026-02-06 12:33:26.114673
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = 'ef0787b85c35'
+down_revision: Union[str, None] = '9b28b66cf8e8'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('files', sa.Column('file_url', sa.String(), nullable=True, comment='file comes from a website url'))
+    op.create_index(op.f('ix_files_file_url'), 'files', ['file_url'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_files_file_url'), table_name='files')
+    op.drop_column('files', 'file_url')
+    # ### end Alembic commands ###