node sqlite3 demo


/**
 * Shows how to use chaining rather than the `serialize` method.
 */
"use strict";
var sqlite3 = require('sqlite3').verbose();
var db;
function createDb() {
    console.log("createDb chain");
    db = new sqlite3.Database('chain.sqlite3', createTable);
}
function createTable() {
    console.log("createTable lorem");
    db.run("CREATE TABLE IF NOT EXISTS lorem (info TEXT)", insertRows);
}
function insertRows() {
    console.log("insertRows Ipsum i");
    var stmt = db.prepare("INSERT INTO lorem VALUES (?)");
    for (var i = 0; i < 10; i++) {
        stmt.run("Ipsum " + i);
    }
    stmt.finalize(readAllRows);
}
function readAllRows() {
    console.log("readAllRows lorem");
    db.all("SELECT rowid AS id, info FROM lorem", function (err, rows) {
        rows.forEach(function (row) {
            console.log(row.id + ": " + row.info);
        });
        closeDb();
    });
}
function closeDb() {
    console.log("closeDb");
    db.close();
}
function runChainExample() {
    createDb();
}
runChainExample();



作者:spike

分类: Nodejs

创作时间:2023-06-25

更新时间:2024-12-08

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