content: """add user default workspace [2e695a26fe7a].
  
  Revision ID: 2e695a26fe7a
  Revises: 1f9d1cd00b90
  Create Date: 2025-02-24 18:19:43.121393
  
  """
  
  import sqlalchemy as sa
  import sqlmodel
  from alembic import op
  
  # revision identifiers, used by Alembic.
  revision = "2e695a26fe7a"
  down_revision = "1f9d1cd00b90"
  branch_labels = None
  depends_on = None
  
  
  def upgrade() -> None:
      """Upgrade database schema and/or data, creating a new revision."""
      with op.batch_alter_table("user", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column(
                  "default_workspace_id",
                  sqlmodel.sql.sqltypes.GUID(),
                  nullable=True,
              )
          )
          batch_op.create_foreign_key(
              "fk_user_default_workspace_id_workspace",
              "workspace",
              ["default_workspace_id"],
              ["id"],
              ondelete="SET NULL",
          )
  
  
  def downgrade() -> None:
      """Downgrade database schema and/or data back to the previous revision."""
      with op.batch_alter_table("user", schema=None) as batch_op:
          batch_op.drop_constraint(
              "fk_user_default_workspace_id_workspace", type_="foreignkey"
          )
          batch_op.drop_column("default_workspace_id")
  