fix database upgrade of data (ITISFoundation#3167)

Author: sanderegg

packages/postgres-database/src/simcore_postgres_database/migration/versions/2cc556e5c52d_file_meta_data_remove_unused_columns_.py

@@ -16,6 +16,10 @@
 
 
 def upgrade():
+    # copy entries in file_uuid to file_id
+    conn = op.get_bind()
+    conn.execute(sa.DDL("UPDATE file_meta_data SET file_id = file_uuid"))
+
     # ### commands auto generated by Alembic - please adjust! ###
     op.add_column(
         "file_meta_data", sa.Column("upload_expires_at", sa.DateTime(), nullable=True)
@@ -73,15 +77,5 @@ def downgrade():
     op.drop_column("file_meta_data", "upload_expires_at")
     # ### end Alembic commands ###
     conn = op.get_bind()
-    for row in conn.execute(sa.DDL("SELECT file_id FROM file_meta_data")):
-        file_id = row["file_id"]
-        conn.execute(
-            sa.DDL(
-                f"""
-UPDATE file_meta_data
-    SET file_uuid = '{file_id}'
-    WHERE file_id = '{file_id}'
-    """
-            )
-        )
+    conn.execute(sa.DDL("UPDATE file_meta_data SET file_uuid = file_id"))
     op.create_primary_key("pk_file_meta_data", "file_meta_data", ["file_uuid"])