"""202601291352

Revision ID: 5ca246ee7dd4
Revises: 915bed077f8d
Create Date: 2026-01-29 13:52:47.647306

"""
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 = '5ca246ee7dd4'
down_revision: Union[str, None] = '915bed077f8d'
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('model_bases', sa.Column('created_at', sa.DateTime(), server_default=sa.text('now()'), nullable=True, comment='创建时间'))
    # ### end Alembic commands ###


def downgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_column('model_bases', 'created_at')
    # ### end Alembic commands ###