Resolve SQL Lock Issues in df_to_psql Function

[er-or-er]

I encountered issues with SQL locks (observed in pgAdmin) that were preventing the model from completing its run. The locks were occurring specifically in the df_to_psql function within input_data_functions.py. After reviewing the SQLAlchemy documentation, I found that using a "begin once" block could help mitigate this issue. Specifically, I referred to the documentation here.

To address the problem, I made the following change:

• Added with conn.begin: to the SQL loop in the df_to_psql function within input_data_functions.py.

This change ensures that each transaction is properly managed within the df_to_psql function, which has resolved the SQL lock issues in my tests. The model now completes its run without encountering lock-related interruptions.

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