====== Alembic ======

===== Actions =====


==== Show history ====
<code>
poetry run alembic history
</code>

==== Create migration ====
<code>
poetry run alembic revision --autogenerate -m ${REVISION_NAME}
</code>

==== Upgrade to head ====
<code>
poetry run alembic upgrade head
</code>

==== Downgrade ====
<code>
poetry run downgrade -1
</code>

==== Rename a field ====
<code>
op.alter_column('merchant', 'lender_values', nullable=True, new_column_name='lender_values_old', type_=sa.JSON())
</code>

==== Add unique together ====
<code>
op.create_unique_constraint('unique_lenderconf_merchant_lender_env', 'lender_configuration',
                                ['merchant_id', 'lender_id', 'environment'])
</code>