Chapter 7: initial samples

Chapter07/mysql-app/insert.js

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+require('dotenv').config()
+const mysql = require('mysql')
+
+const db = mysql.createConnection({
+    user: process.env.DB_MYSQL_USER,
+    password: process.env.DB_MYSQL_PASSWORD
+})
+
+db.query('CREATE DATABASE tasks')
+db.query('USE tasks')
+
+db.query(
+    'CREATE TABLE tasks.tasks (' +
+    'id INT NOT NULL AUTO_INCREMENT, ' +
+    'task TEXT NOT NULL, PRIMARY KEY ( id )' +
+    ')')
+
+const ignore = new Set([
+    'ER_DB_CREATE_EXISTS', 'ER_TABLE_EXISTS_ERROR'
+])
+
+db.on('error', (err) => {
+    if (ignore.has(err.code)) return
+    throw err
+})
+
+if (process.argv[2]) {
+    db.query(`
+        INSERT INTO tasks.tasks (task)
+        VALUES (?);
+    `, [process.argv[2]])
+}
+
+db.query(`
+SELECT * FROM tasks.tasks;
+`, (err, results, fields) => {
+    console.log(results)
+})
+
+db.end()