NODEJS学习 sqlite操作，nodejssqlite

NODEJS学习 sqlite操作，nodejssqlite

【代码段建立表】

var fs = require("fs");

var file =  "test.db";
var exists = fs.existsSync(file);


if(!exists) {
    console.log("Creating DB file.");
    fs.openSync(file, "w");
}

 
 
var sqlite3 = require("sqlite3").verbose();
var db = new sqlite3.Database(file);
 db.each("SELECT rowid AS id, thing FROM Stuff where thing = '" + "Thing #1995800" + "'", function(err, row) {
        console.log(row.id + ": " + row.thing);
    });
return;
db.serialize(function() {
    if(!exists) {
        db.run("CREATE TABLE Stuff (thing TEXT)");
    }


    var stmt = db.prepare("INSERT INTO Stuff VALUES (?)");


    //Insert random data
    var rnd;
    for (var i = 0; i < 10; i++) {
        rnd = Math.floor(Math.random() * 10000000);
        stmt.run("Thing #" + rnd);
    }


    stmt.finalize();
    db.each("SELECT rowid AS id, thing FROM Stuff where id =11", function(err, row) {
        console.log(row.id + ": " + row.thing);
    });
});
 

db.close();

【代码段2：查询表】

var sqlite3 = require("sqlite3").verbose();
var db = new sqlite3.Database(file);
 db.each("SELECT * FROM result", function(err, row) {
        console.log( "row:",row);
    });
return;

【使用knex】

参考 http://knexjs.org 的例子， 提供一些更便于操作数据库的包装。