How to Efficiently Parse Database Rows into Go Structs?

Parsing Database Rows into Structs

In the realm of database manipulation, the need often arises to bridge the gap between database rows and custom struct types. This challenge sparks the question: how to effectively convert an opaque database row into the structure of a defined Go struct?

One approach is to leverage the Scan function provided by the database/sql package. With this approach, the desired struct is declared as an anonymous type:

var row struct {
    Name  string
    Id    int
    Score int
}

Subsequently, the Scan function takes pointers to each field within the anonymous struct and populates them with the corresponding column values:

err = db.QueryRow("SELECT|people|age,name|age=?", 3).Scan(&row.age, &row.name)

This implementation adheres to the convention of using the age field in the struct to map to the age column in the database table, and so on.

By delving into the test cases provided in the database/sql package, programmers can uncover various examples of how to manipulate database data, including the approach outlined above. This exploration can lead to deeper insights and more efficient solutions when working with database interactions in Go.

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