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add pg_trgm index on Alias.note to speed up LIKE search
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@ -1136,6 +1136,10 @@ class Alias(db.Model, ModelMixin):
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__table_args__ = (
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__table_args__ = (
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Index("ix_video___ts_vector__", ts_vector, postgresql_using="gin"),
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Index("ix_video___ts_vector__", ts_vector, postgresql_using="gin"),
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# index on note column using pg_trgm
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Index('note_pg_trgm_index', "note",
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postgresql_ops={"note": "gin_trgm_ops"},
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postgresql_using='gin'),
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)
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)
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user = db.relationship(User, foreign_keys=[user_id])
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user = db.relationship(User, foreign_keys=[user_id])
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31
migrations/versions/2021_082012_424808e1fe49_.py
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31
migrations/versions/2021_082012_424808e1fe49_.py
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@ -0,0 +1,31 @@
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"""empty message
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Revision ID: 424808e1fe49
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Revises: d4392342465f
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Create Date: 2021-08-20 12:11:57.901994
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"""
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import sqlalchemy_utils
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from alembic import op
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import sqlalchemy as sa
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# revision identifiers, used by Alembic.
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revision = '424808e1fe49'
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down_revision = 'd4392342465f'
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branch_labels = None
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depends_on = None
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def upgrade():
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# ### commands auto generated by Alembic - please adjust! ###
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op.execute('CREATE EXTENSION pg_trgm')
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op.create_index('note_pg_trgm_index', 'alias', ['note'], unique=False, postgresql_ops={'note': 'gin_trgm_ops'}, postgresql_using='gin')
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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_index('note_pg_trgm_index', table_name='alias')
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op.execute('DROP EXTENSION pg_trgm')
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# ### end Alembic commands ###
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