superset 2016-10-25_10-16_ad4d656d92bc_add_avg_metric 源码
superset 2016-10-25_10-16_ad4d656d92bc_add_avg_metric 代码
文件路径：/superset/migrations/versions/2016-10-25_10-16_ad4d656d92bc_add_avg_metric.py
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# to you under the Apache License, Version 2.0 (the
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# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
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"""Add avg() to default metrics
Revision ID: ad4d656d92bc
Revises: b46fa1b0b39e
Create Date: 2016-10-25 10:16:39.871078
"""
# revision identifiers, used by Alembic.
revision = "ad4d656d92bc"
down_revision = "7e3ddad2a00b"
import sqlalchemy as sa
from alembic import op
def upgrade():
op.add_column("columns", sa.Column("avg", sa.Boolean(), nullable=True))
op.add_column("table_columns", sa.Column("avg", sa.Boolean(), nullable=True))
def downgrade():
with op.batch_alter_table("columns") as batch_op:
batch_op.drop_column("avg")
with op.batch_alter_table("table_columns") as batch_op:
batch_op.drop_column("avg")
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