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53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
"""Create experiment assignments table
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Revision ID: 061
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Revises: 060
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Create Date: 2025-07-29
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This migration creates a table to track experiment assignments for conversations.
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Each row represents one experiment assignment with experiment_name and variant columns.
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"""
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import sqlalchemy as sa
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from alembic import op
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# revision identifiers, used by Alembic.
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revision = '061'
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down_revision = '060'
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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 the experiment_assignments table."""
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op.create_table(
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'experiment_assignments',
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sa.Column('id', sa.String(), nullable=False),
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sa.Column('conversation_id', sa.String(), nullable=True),
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sa.Column('experiment_name', sa.String(), nullable=False),
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sa.Column('variant', sa.String(), nullable=False),
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sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
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sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint(
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'conversation_id',
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'experiment_name',
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name='uq_experiment_assignments_conversation_experiment',
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),
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)
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# Create index on conversation_id for efficient lookups
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op.create_index(
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'ix_experiment_assignments_conversation_id',
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'experiment_assignments',
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['conversation_id'],
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)
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def downgrade():
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"""Drop the experiment_assignments table."""
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op.drop_index(
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'ix_experiment_assignments_conversation_id', table_name='experiment_assignments'
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)
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op.drop_table('experiment_assignments')
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