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a.pivkin
2025-12-20 17:00:05 +03:00
parent bf8f562768
commit af4a1c46e1
171 changed files with 0 additions and 0 deletions
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testing/go-code-samples/go-db-comparison/examples/database-sql/database-sql.go
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package main
import (
"database/sql"
"fmt"
"log"
"time"
_ "github.com/go-sql-driver/mysql"
)
type Student struct {
ID int
Fname string
Lname string
DateOfBirth time.Time
Email string
Address string
Gender string
}
var db *sql.DB
func main() {
var err error
db, err = dbSqlConnect()
if err != nil {
log.Fatal(err)
}
s := Student{
Fname: "Leon",
Lname: "Ashling",
DateOfBirth: time.Date(1994, time.August, 14, 23, 51, 42, 0, time.UTC),
Email: "lashling5@senate.gov",
Address: "39 Kipling Pass",
Gender: "Male",
}
//adding student record to table
sID, err := addStudent(s)
if err != nil {
fmt.Println(err)
}
fmt.Printf("addSudent id: %v \n", sID)
//selecting student by ID
st, err := studentByID(sID)
if err != nil {
fmt.Println(err)
}
fmt.Printf("studentByID id: %v \n", st)
students, err := fetchStudents()
if err != nil {
fmt.Println(err)
}
fmt.Printf("fetchStudents count: %v \n", len(students))
}
func dbSqlConnect() (*sql.DB, error) {
// Opening a database connection.
db, err := sql.Open("mysql", "theuser:thepass@tcp(localhost:3306)/thedb?parseTime=true")
if err != nil {
return nil, err
}
fmt.Println("Connected!")
return db, nil
}
func addStudent(s Student) (int64, error) {
query := "insert into students (fname, lname, date_of_birth, email, gender, address) values (?, ?, ?, ?, ?, ?);"
result, err := db.Exec(query, s.Fname, s.Lname, s.DateOfBirth, s.Email, s.Gender, s.Address)
if err != nil {
return 0, fmt.Errorf("addStudent Error: %v", err)
}
id, err := result.LastInsertId()
if err != nil {
return 0, fmt.Errorf("addSudent Error: %v", err)
}
return id, nil
}
func fetchStudents() ([]Student, error) {
// A slice of Students to hold data from returned rows.
var students []Student
rows, err := db.Query("SELECT * FROM students")
if err != nil {
return nil, fmt.Errorf("fetchStudents %v", err)
}
defer rows.Close()
// Loop through rows, using Scan to assign column data to struct fields.
for rows.Next() {
var s Student
if err := rows.Scan(&s.ID, &s.Fname, &s.Lname, &s.DateOfBirth, &s.Email, &s.Address, &s.Gender); err != nil {
return nil, fmt.Errorf("fetchStudents %v", err)
}
students = append(students, s)
}
if err := rows.Err(); err != nil {
return nil, fmt.Errorf("fetchStudents %v", err)
}
return students, nil
}
func studentByID(id int64) (Student, error) {
var st Student
row := db.QueryRow("SELECT * FROM students WHERE id = ?", id)
if err := row.Scan(&st.ID, &st.Fname, &st.Lname, &st.DateOfBirth, &st.Email, &st.Address, &st.Gender); err != nil {
if err == sql.ErrNoRows {
return st, fmt.Errorf("studentById %d: no such student", id)
}
return st, fmt.Errorf("studentById %d: %v", id, err)
}
return st, nil
}
testing/go-code-samples/go-db-comparison/examples/gorm/gorm.go
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package main
import (
"fmt"
"log"
"time"
"gorm.io/driver/mysql"
"gorm.io/gorm"
)
type Student struct {
ID int
Fname string
Lname string
DateOfBirth time.Time
Email string
Address string
Gender string
}
func main() {
// refer https://github.com/go-sql-driver/mysql#dsn-data-source-name for details
db, err := gorm.Open(mysql.Open("theuser:thepass@tcp(127.0.0.1:3306)/thedb?charset=utf8mb4&parseTime=True&loc=Local"))
if err != nil {
log.Fatal(err)
}
fmt.Println("Connected!")
//initializing record to be inserted
s := Student{
Fname: "Leon",
Lname: "Ashling",
DateOfBirth: time.Date(1994, time.August, 14, 23, 51, 42, 0, time.UTC),
Email: "lashling5@senate.gov",
Address: "39 Kipling Pass",
Gender: "Male",
}
//adds student record and returns the ID into the ID field
db.Create(&s)
fmt.Printf("addSudent id: %v \n", s.ID)
//selecting multiple record
var students []Student
db.Limit(10).Find(&students)
fmt.Printf("fetchStudents count: %v \n", len(students))
}
testing/go-code-samples/go-db-comparison/examples/setup.sql
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DROP TABLE IF EXISTS students;
CREATE TABLE `students` (
`id` bigint NOT NULL AUTO_INCREMENT,
`fname` varchar(50) not null,
`lname` varchar(50) not null,
`date_of_birth` datetime not null,
`email` varchar(50),
`address` varchar(50),
`gender` varchar(50),
PRIMARY KEY (`id`)
);
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (1, 'Caddric', 'Likely', '2000-07-06 02:43:37', 'clikely0@wp.com', 'Male', '9173 Boyd Street');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (2, 'Jerad', 'Ciccotti', '1993-02-11 15:59:56', 'jciccotti1@bravesites.com', 'Male', '34 Declaration Drive');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (3, 'Hillier', 'Caslett', '1992-09-04 13:38:46', 'hcaslett2@hostgator.com', 'Male', '36 Duke Trail');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (4, 'Bertine', 'Roddan', '1991-02-18 09:10:05', 'broddan3@independent.co.uk', 'Female', '2896 Kropf Road');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (5, 'Theda', 'Brockton', '1991-10-29 09:08:48', 'tbrockton4@lycos.com', 'Female', '93 Hermina Plaza');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (6, 'Leon', 'Ashling', '1994-08-14 23:51:42', 'lashling5@senate.gov', 'Male', '39 Kipling Pass');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (7, 'Aldo', 'Pettitt', '1994-08-14 22:03:40', 'apettitt6@hexun.com', 'Male', '38 Dryden Road');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (8, 'Filmore', 'Cordingly', '1999-11-20 02:35:48', 'fcordingly7@163.com', 'Male', '34 Pawling Park');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (9, 'Katalin', 'MacCroary', '1994-11-08 11:59:19', 'kmaccroary8@cargocollective.com', 'Female', '2540 Maryland Parkway');
insert into students (id, fname, lname, date_of_birth, email, gender, address) values (10, 'Franky', 'Puddan', '1995-04-23 17:07:29', 'fpuddan9@psu.edu', 'Female', '3214 Washington Road');
testing/go-code-samples/go-db-comparison/examples/sqlc/db.go
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// Code generated by sqlc. DO NOT EDIT.
// versions:
// sqlc v1.17.2
package main
import (
"context"
"database/sql"
)
type DBTX interface {
ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
PrepareContext(context.Context, string) (*sql.Stmt, error)
QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
QueryRowContext(context.Context, string, ...interface{}) *sql.Row
}
func New(db DBTX) *Queries {
return &Queries{db: db}
}
type Queries struct {
db DBTX
}
func (q *Queries) WithTx(tx *sql.Tx) *Queries {
return &Queries{
db: tx,
}
}
testing/go-code-samples/go-db-comparison/examples/sqlc/models.go
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// Code generated by sqlc. DO NOT EDIT.
// versions:
// sqlc v1.17.2
package main
import (
"time"
)
type Student struct {
ID int64
Fname string
Lname string
DateOfBirth time.Time
Email string
Address string
Gender string
}
testing/go-code-samples/go-db-comparison/examples/sqlc/query.sql
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-- name: addStudent :execlastid
insert into students (fname, lname, date_of_birth, email, gender, address) values (?, ?, ?, ?, ?, ?);
-- name: studentByID :one
SELECT * FROM students WHERE id = ?;
-- name: fetchStudents :many
SELECT * FROM students LIMIT 10;
testing/go-code-samples/go-db-comparison/examples/sqlc/query.sql.go
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// Code generated by sqlc. DO NOT EDIT.
// versions:
// sqlc v1.17.2
// source: query.sql
package main
import (
"context"
"time"
)
const addStudent = `-- name: addStudent :execlastid
insert into students (fname, lname, date_of_birth, email, gender, address) values (?, ?, ?, ?, ?, ?)
`
type addStudentParams struct {
Fname string
Lname string
DateOfBirth time.Time
Email string
Gender string
Address string
}
func (q *Queries) addStudent(ctx context.Context, arg addStudentParams) (int64, error) {
result, err := q.db.ExecContext(ctx, addStudent,
arg.Fname,
arg.Lname,
arg.DateOfBirth,
arg.Email,
arg.Gender,
arg.Address,
)
if err != nil {
return 0, err
}
return result.LastInsertId()
}
const fetchStudents = `-- name: fetchStudents :many
SELECT id, fname, lname, date_of_birth, email, address, gender FROM students LIMIT 10
`
func (q *Queries) fetchStudents(ctx context.Context) ([]Student, error) {
rows, err := q.db.QueryContext(ctx, fetchStudents)
if err != nil {
return nil, err
}
defer rows.Close()
var items []Student
for rows.Next() {
var i Student
if err := rows.Scan(
&i.ID,
&i.Fname,
&i.Lname,
&i.DateOfBirth,
&i.Email,
&i.Address,
&i.Gender,
); err != nil {
return nil, err
}
items = append(items, i)
}
if err := rows.Close(); err != nil {
return nil, err
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}
const studentByID = `-- name: studentByID :one
SELECT id, fname, lname, date_of_birth, email, address, gender FROM students WHERE id = ?
`
func (q *Queries) studentByID(ctx context.Context, id int64) (Student, error) {
row := q.db.QueryRowContext(ctx, studentByID, id)
var i Student
err := row.Scan(
&i.ID,
&i.Fname,
&i.Lname,
&i.DateOfBirth,
&i.Email,
&i.Address,
&i.Gender,
)
return i, err
}
testing/go-code-samples/go-db-comparison/examples/sqlc/schema.sql
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CREATE TABLE `students` (
`id` bigint NOT NULL AUTO_INCREMENT,
`fname` varchar(50) not null,
`lname` varchar(50) not null,
`date_of_birth` datetime not null,
`email` varchar(50) not null,
`address` varchar(50) not null,
`gender` varchar(50) not null,
PRIMARY KEY (`id`)
);
testing/go-code-samples/go-db-comparison/examples/sqlc/sqlc.go
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package main
import (
"context"
"database/sql"
"fmt"
"log"
"time"
_ "github.com/go-sql-driver/mysql"
)
func main() {
conn, err := sql.Open("mysql", "theuser:thepass@tcp(localhost:3306)/thedb?parseTime=true")
if err != nil {
log.Fatal(err)
}
fmt.Println("Connected!")
db := New(conn)
//initializing record to be inserted
newSt := addStudentParams{
Fname: "Leon",
Lname: "Ashling",
DateOfBirth: time.Date(1994, time.August, 14, 23, 51, 42, 0, time.UTC),
Email: "lashling5@senate.gov",
Gender: "Male",
Address: "39 Kipling Pass",
}
// inserting the record
sID, err := db.addStudent(context.Background(), newSt)
if err != nil {
log.Fatal(err)
}
fmt.Printf("addSudent id: %v \n", sID)
//retreive record by id
st, err := db.studentByID(context.Background(), sID)
if err != nil {
log.Println(err)
}
fmt.Printf("studentByID record: %v \n", st)
//fetching multiple records
students, err := db.fetchStudents(context.Background())
if err != nil {
log.Println(err)
}
fmt.Printf("fetchStudents count: %v \n", len(students))
}
testing/go-code-samples/go-db-comparison/examples/sqlc/sqlc.yaml
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version: 1
packages:
- path: "./"
name: "main"
engine: "mysql"
schema: "schema.sql"
queries: "query.sql"
testing/go-code-samples/go-db-comparison/examples/sqlx/sqlx.go
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package main
import (
"database/sql"
"fmt"
"log"
"time"
_ "github.com/go-sql-driver/mysql"
"github.com/jmoiron/sqlx"
)
type Student struct {
ID int
Fname string
Lname string
DateOfBirth time.Time `db:"date_of_birth"`
Email string
Address string
Gender string
}
var db *sqlx.DB
func main() {
var err error
db, err = sqlxConnect()
if err != nil {
log.Fatal(err)
}
s := Student{
Fname: "Leon",
Lname: "Ashling",
DateOfBirth: time.Date(1994, time.August, 14, 23, 51, 42, 0, time.UTC),
Email: "lashling5@senate.gov",
Address: "39 Kipling Pass",
Gender: "Male",
}
//adding student record to table
sID, err := addStudent(s)
if err != nil {
fmt.Println(err)
}
fmt.Printf("addStudent id: %v \n", sID)
//selecting student by ID
st, err := studentByID(sID)
if err != nil {
fmt.Println(err)
}
fmt.Printf("studentByID record: %v \n", st)
students, err := fetchStudents()
if err != nil {
fmt.Println(err)
}
fmt.Printf("fetchStudents count: %v \n", len(students))
}
func sqlxConnect() (*sqlx.DB, error) {
// Opening a database connection.
db, err := sqlx.Open("mysql", "theuser:thepass@tcp(localhost:3306)/thedb?parseTime=true")
if err != nil {
return nil, err
}
fmt.Println("Connected!")
return db, nil
}
func addStudent(s Student) (int64, error) {
query := "insert into students (fname, lname, date_of_birth, email, gender, address) values (?, ?, ?, ?, ?, ?);"
result := db.MustExec(query, s.Fname, s.Lname, s.DateOfBirth, s.Email, s.Gender, s.Address)
id, err := result.LastInsertId()
if err != nil {
return 0, fmt.Errorf("addSudent Error: %v", err)
}
return id, nil
}
func fetchStudents() ([]Student, error) {
// A slice of Students to hold data from returned rows.
var students []Student
err := db.Select(&students, "SELECT * FROM students LIMIT 10")
if err != nil {
return nil, fmt.Errorf("fetchStudents %v", err)
}
return students, nil
}
func studentByID(id int64) (Student, error) {
var st Student
//if err := db.QueryRowx("SELECT * FROM students WHERE id = ?", id).StructScan(&st); err != nil {
// if err == sql.ErrNoRows {
// return st, fmt.Errorf("studentById %d: no such student", id)
// }
// return st, fmt.Errorf("studentById %d: %v", id, err)
//}
if err := db.Get(&st, "SELECT * FROM students WHERE id = ?", id); err != nil {
if err == sql.ErrNoRows {
return st, fmt.Errorf("studentById %d: no such student", id)
}
return st, fmt.Errorf("studentById %d: %v", id, err)
}
return st, nil
}