How can I migrate from raw SQL to a Go query builder?

How can I migrate from raw SQL to a Go query builder?

Migrating from raw SQL to a Go query builder involves several steps. First, you need to choose a suitable query builder library, like Squirrel or Goqu. Then, identify the raw SQL queries in your code and translate them into the builder's syntax. Would you like a specific example?

Yes, can you show me an example of a simple SELECT query?

Sure! Here's a simple example using Squirrel:

import "github.com/Masterminds/squirrel"

query := squirrel.Select("id", "name").From("users").Where("age > ?", 18)
sql, args, err := query.ToSql()

This will generate a SQL query to select id and name from the users table where age is greater than 18.

What about handling JOINs in the query builder?

You can handle JOINs by chaining the Join method. For example:

query := squirrel.Select("u.id", "u.name", "o.amount").
    From("users u").
    Join("orders o ON u.id = o.user_id")

This will create a query that joins the users and orders tables.

Are there any performance considerations I should be aware of?

Yes, while query builders can help with readability and maintainability, they may introduce some overhead. It's essential to profile your queries and ensure that the generated SQL is optimized for performance.