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452924faaf
Running an update before setting the column default value reduces the time the table is locked (since most rows don't have a NULL value anymore), but the migration takes slightly longer to run overall.
29 lines
738 B
Python
29 lines
738 B
Python
"""
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Revision ID: 0245_archived_flag_jobs
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Revises: 0244_another_letter_org
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Create Date: 2018-11-22 16:32:01.105803
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"""
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from alembic import op
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import sqlalchemy as sa
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revision = '0245_archived_flag_jobs'
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down_revision = '0244_another_letter_org'
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def upgrade():
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# ### commands auto generated by Alembic - please adjust! ###
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op.add_column('jobs', sa.Column('archived', sa.Boolean(), nullable=True))
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op.execute('update jobs set archived = false')
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op.alter_column('jobs', 'archived', nullable=False, server_default=sa.false())
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# ### end Alembic commands ###
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def downgrade():
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# ### commands auto generated by Alembic - please adjust! ###
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op.drop_column('jobs', 'archived')
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# ### end Alembic commands ###
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