golang install sqlite

Golang is a programming language known for its efficiency. It is used in a wide range of fields, including web applications, network development, and system programming. SQLite is a lightweight database. It is easy to use, has good performance, and supports cross-platform. Therefore, it has also been widely used in some small projects. This article will introduce how to install sqlite in golang so that you can use it during development.

Preparation

Before starting the installation, we need to install golang and sqlite on the local computer. The method of installing golang and sqlite is beyond the scope of this article. It is recommended that you consult the relevant information yourself.

Install sqlite3

There are many ways to install sqlite3. This article uses [Homebrew](https://brew.sh/index_zh-cn) to install it on the command line. Way. The specific steps are as follows:

1. Open the terminal and enter the following commands to install Homebrew

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

2. Install sqlite3

Enter the following in the terminal Command to install:

brew install sqlite3

3. Verify the installation result

Enter the following command in the terminal:

sqlite3

If the following prompt appears, it means that sqlite3 has been Successful installation:

SQLite version 3.36.0  2021-06-18 18:36:39
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.

Install sqlite driver

After installing sqlite3, you need to install the corresponding driver to integrate it into the golang development environment. Currently, there are many kinds of sqlite drivers supported by golang, such as: [sqlite3](https://github.com/mattn/go-sqlite3), [gomobile](https://pkg.go.dev/golang.org/ x/mobile/internal/mobileinit), etc. This article takes [go-sqlite3](https://github.com/mattn/go-sqlite3) as an example to introduce how to install it.

1. Use command to install

Execute the following command in the terminal to install:

go get github.com/mattn/go-sqlite3

2. Verify the installation result

Execute the following command in the terminal:

go test github.com/mattn/go-sqlite3

If there is no error message in the running result, it means that go-sqlite3 has been installed successfully.

Use go-sqlite3 to operate sqlite3 database

After installing go-sqlite3, you can use the sqlite3 database in the golang development environment. The following is a simple sample code for reference only:

package main

import (
    "database/sql"
    "fmt"
    _ "github.com/mattn/go-sqlite3"
)

func main() {
    db, err := sql.Open("sqlite3", "./test.db")
    if err != nil {
        fmt.Println(err)
    }
    defer db.Close()

    sql := `
        CREATE TABLE IF NOT EXISTS user (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            name TEXT,
            age INTEGER
        );
    `
    _, err = db.Exec(sql)
    if err != nil {
        fmt.Println(err)
    }

    sql = `
        INSERT INTO user (name, age) VALUES
        ("张三", 28),
        ("李四", 32),
        ("王五", 25);
    `
    result, err := db.Exec(sql)
    if err != nil {
        fmt.Println(err)
    }

    count, err := result.RowsAffected()
    if err != nil {
        fmt.Println(err)
    }
    fmt.Println("插入行数：", count)

    rows, err := db.Query("SELECT * FROM user")
    if err != nil {
        fmt.Println(err)
    }
    defer rows.Close()

    for rows.Next() {
        var id int
        var name string
        var age int

        err = rows.Scan(&id, &name, &age)
        if err != nil {
            fmt.Println(err)
        }

        fmt.Println("id: ", id, ", name: ", name, ", age: ", age)
    }

    err = rows.Err()
    if err != nil {
        fmt.Println(err)
    }
}

Summary

Through the introduction of this article, it can be seen that installing and using sqlite3 in golang is very simple and clear. You only need to install sqlite3 first, and then install the corresponding driver, and you can happily interact with the sqlite3 database.

But it should be noted that in order to ensure the robustness and security of the code in actual development, we need to carry out specific optimized configuration and permission management of the sqlite database. This article mainly introduces the basic operations. In actual work, developers also need to have in-depth understanding and learning based on the actual situation.

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