This PR enhances the handling of PostgreSQL interval types in upsert and insert operations. Previously, the interval type was strictly managed as a number or IPostgresInterval. To improve flexibility and usability, this update allows the interval type to also be represented as a string. Using a number here seems incorrect, as I couldn't find such an option in the PostgreSQL documentation, but I have kept this possibility to maintain backward compatibility.
This PR enhances the handling of PostgreSQL interval types in upsert and insert operations. Previously, the interval type was strictly managed as a number or IPostgresInterval. To improve flexibility and usability, this update allows the interval type to also be represented as a string. Using a number here seems incorrect, as I couldn't find such an option in the PostgreSQL documentation, but I have kept this possibility to maintain backward compatibility.