meher1993 commented on PR #56100:
URL: https://github.com/apache/airflow/pull/56100#issuecomment-3357732310

   Hello @ashb -  Facing a similar issue when migrating from 2.10.4 to 3.1.0.   
Shouldn't similar changes be applied to the batch_alter_table during creation 
of indexes for the following ?
   
   idx_user_group_id
   idx_user_id
   idx_group_id
   idx_group_role_id
   
   
   For example,
   ```
   batch_op.create_index("idx_group_id", ["group_id"], unique=False)
   ```
   
   will be 
   
   ```
   batch_op.create_index("idx_group_id", ["group_id"], unique=False, 
if_not_exists=True)`
   ```
   
   ```
   sqlalchemy.exc.ProgrammingError: (psycopg2.errors.DuplicateTable) relation 
"idx_group_id" already exists
   [SQL: CREATE INDEX idx_group_id ON ab_group_role (group_id)]
   (Background on this error at: https://sqlalche.me/e/14/f405)`
   ```


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