VS Code how to format a few lines of SQL - sql

Question

I have a main.go file with a sql query saved as a string.
defer db.Close()
id := 1
// format this query
row := db.QueryRow("SELECT f_name, l_name from users WHERE id = ?", id)
var fname, lname string
err = row.Scan(&fname, &lname)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%v %v\n", fname, lname)
Is there a way to format that line?

Answer 1

I have also had the same problem. For me, the best solution is to move the SQL query to an embed file and format it there. This also has the advantage of making more complex or larger SQL queries more readable.
For *.sql files can than be a plugin used. For example Language PL/SQL.
Here is an example:
Excerpt of a repository (sqlite3,postgres,...)
package repository
import (
"context"
"database/sql"
_ "embed"
)
//go:embed dml/selectUsers.sql
var selectUsers string
type Repository struct{
sqlDB *sql.DB
}
func (r *Repository) GetUsers()([]*User,error){
tx, err := s.sqlDb.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
if err != nil {
return nil, fmt.Errorf("failed to begin new transaction: %w", err)
}
defer tx.Close()
selectedUsers, err := r.selectUsers(tx, selectUsers)
if err != nil {
return nil, fmt.Errorf("failed to select users: %w", err)
}
err = tx.Commit()
if err != nil {
return nil, fmt.Errorf("failed to commit transaction: %w", err)
}
return selectedUsers, nil
}
func (r *Repository) selectUsers(tx *sql.Tx, query string, args ...interface{}) ([]*User,error) {
stmt, err := tx.Prepare(insertCompany)
if err != nil {
return nil, fmt.Errorf("failed to prepare statement: %v", err)
}
defer stmt.Close()
rows, err := stmt.Query(args...)
if err != nil {
return nil, fmt.Errorf("failed to query statement: %v", err)
}
selectedUsers := make([]*User, 0)
for rows.Next() {
selectedUser := new(User)
err = rows.Scan(
&selectedUser.ID,
&selectedUser.Surename,
&selectedUser.Familyname,
)
if err != nil {
return nil, fmt.Errorf("failed to scan row: %v", err)
}
selectedUsers = append(selectedUsers, selectedUser)
}
return selectedUsers, nil
}
dml/selectUsers.sql
SELECT
id,
surename,
familyname
FROM
users;