simplify downgrade and defer renaming

src/migrations/versions/d87a6410efe4_migration.py

@@ -63,50 +63,6 @@ def upgrade():
  with op.batch_alter_table("grouping_records_new", schema=None) as batch_op:
  batch_op.create_unique_constraint("u_project_id_hash_composite", ["project_id", "hash"])
 
- op.execute("ALTER TABLE IF EXISTS grouping_records RENAME to grouping_records_old;")
- op.execute("ALTER TABLE grouping_records_new RENAME TO grouping_records;")
- for i in range(100):
- op.execute(f"ALTER TABLE grouping_records_new_p{i} RENAME TO grouping_records_p{i};")
-
 
 def downgrade():
- op.execute("ALTER TABLE IF EXISTS grouping_records RENAME TO grouping_records_new;")
-
- op.execute(
- """
- CREATE TABLE grouping_records (
- id INTEGER NOT NULL,
- project_id BIGINT NOT NULL,
- hash VARCHAR(32) NOT NULL,
- message VARCHAR NOT NULL,
- error_type VARCHAR,
- stacktrace_embedding VECTOR(768) NOT NULL,
- PRIMARY KEY (id, project_id)
- );
- """
- )
-
- op.execute(
- """
- INSERT INTO grouping_records (id, project_id, message, error_type, stacktrace_embedding, hash)
- SELECT id, project_id, message, error_type, stacktrace_embedding, hash
- FROM grouping_records_new;
- """
- )
-
- op.execute(
- "CREATE INDEX IF NOT EXISTS ix_grouping_records_project_id ON grouping_records (project_id);"
- )
- op.execute(
- """
- CREATE INDEX IF NOT EXISTS ix_grouping_records_stacktrace_embedding_hnsw
- ON grouping_records USING hnsw (stacktrace_embedding vector_cosine_ops)
- WITH (m = 16, ef_construction = 64);
- """
- )
-
- op.execute(
- "ALTER TABLE grouping_records ADD CONSTRAINT u_project_id_hash_composite UNIQUE (project_id, hash);"
- )
-
  op.execute("DROP TABLE IF EXISTS grouping_records_new CASCADE;")