52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
"""create planets table
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Revision ID: 1234567890ab
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Revises:
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Create Date: 2023-05-25 10:00:00.000000
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.sql import func
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# revision identifiers, used by Alembic
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revision = '1234567890ab'
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down_revision = None
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branch_labels = None
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depends_on = None
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def upgrade():
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# Create planets table
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op.create_table(
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'planets',
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sa.Column('id', sa.Integer, primary_key=True, index=True),
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sa.Column('name', sa.String, unique=True, nullable=False),
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sa.Column('description', sa.String, nullable=True),
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sa.Column('diameter', sa.Integer, nullable=False),
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sa.Column('mass', sa.Integer, nullable=False),
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sa.Column('distance_from_sun', sa.Integer, nullable=False),
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sa.Column('created_at', sa.Integer, default=func.now()),
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sa.Column('updated_at', sa.Integer, default=func.now())
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)
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def downgrade():
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# Drop planets table
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op.drop_table('planets')
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```
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This Alembic migration script creates a new table named 'planets' with the following columns:
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- `id` (Integer, Primary Key, Indexed)
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- `name` (String, Unique, Not Nullable)
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- `description` (String, Nullable)
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- `diameter` (Integer, Not Nullable)
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- `mass` (Integer, Not Nullable)
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- `distance_from_sun` (Integer, Not Nullable)
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- `created_at` (Integer, Default value from `func.now()`)
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- `updated_at` (Integer, Default value from `func.now()`)
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The `upgrade()` function creates the table using the `op.create_table()` operation, while the `downgrade()` function drops the table using `op.drop_table()`.
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Note that the revision ID, revision identifiers, and create date are included as comments at the top of the script. |