Question 1

How do I use Gorp with PostgreSQL without placeholder errors?

Accepted Answer

Use named parameters or switch placeholders to $1, $2, etc., in raw SQL, as Gorp doesn't standardize syntax. The README recommends dbMap.Dialect.BindVar() for dialect-specific bindings.

Question 2

Is Gorp or GORM better for Go database projects?

Accepted Answer

Gorp is lighter and closer to SQL, ideal for control and simplicity, while GORM offers more features like relationships but with more abstraction. Choose based on your need for automation vs. transparency.

Question 3

How to handle one-to-many relationships in Gorp?

Accepted Answer

You must write custom SQL joins and map results manually using ad hoc queries, as Gorp doesn't automate relationship management. The README shows examples with joined structs like InvoicePersonView.

Question 4

Is Gorp still maintained in 2024?

Accepted Answer

Development is slow, with maintainers focusing on merging PRs rather than active feature development, per the 2016 README update. Check GitHub issues for recent activity, but expect limited updates.

Question 5

What's the best way to add indexes in Gorp?

Accepted Answer

Use the AddIndex() method on table maps to create indexes beyond primary keys, specifying columns and index type. README provides an example with a unique B-tree index on the AcctId field.

Question 6

How to implement pre-insert hooks for timestamps in Gorp?

Accepted Answer

Define a PreInsert method on your struct that sets fields like Created time, and Gorp will call it automatically. README shows an example with Invoice.PreInsert setting UnixNano timestamps.

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