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"""changed the type of the column 'last_modified' to string.
Revision ID: 17dcb75f3fe
Revises: cde34831ea
Create Date: 2015-03-10 14:20:53.676344
"""
# revision identifiers, used by Alembic.
from datetime import datetime
import sqlalchemy as sa
from alembic import op
revision = "17dcb75f3fe"
down_revision = "cde34831ea"
def upgrade():
unix_start = datetime(1970, 1, 1)
op.drop_column("feed", "last_modified")
op.add_column(
"feed",
sa.Column(
"last_modified",
sa.String(),
nullable=True,
default=unix_start,
server_default=str(unix_start),
),
)
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