connect((err) => { if (err) throw err; console.log('Connected to the database!'); }); 执行SQL查询:一旦建立了数据库连接,你可以使用库提供的方法执行SQL查询。以下是一个示例,展示如何执行一个简单的SELECT查询: 代码语言:javascript 复制
constmysql=require('mysql');constconnection=mysql.createConnection({host:'localhost',user:'root',password:'password',database:'mydatabase'});connection.connect((error)=>{if(error){console.error('Failed to connect to database:',error);return;}console.log('Connected to database');}); 1. 2...
connect.js源代码: functionconnectToDB(){ //创建数据库连接对象varconn =newActiveXObject("ADODB.Connection");//创建数据集对象varrs =newActiveXObject("ADODB.Recordset");try{//数据库连接串varconnectionstring = "DSN=zhg_mysql2;Server=pc-bp18rn0tqu85a1600-public.rwlb.rds.aliyuncs.com;Database...
var connectionstring = "DSN=zhg_mysql2;Server=pc-bp18rn0tqu85a1600-public.rwlb.rds.aliyuncs.com;Database=db_zhg;User=lab_420510322; Password=a540a1f12517_#@Aa;Port=3306"; //打开连接 conn.open(connectionstring); //若成功连接输出提示信息 alert("connect to polarDB for Mysql succeed"); /...
I need to access a sql database through odbc using javascript. This database resides in the client PC and the only way to connect to it is using the client PC ODBC. The asp.net application need to retreive and update data to that database. I don't know how to do this so I need...
若要從容器讀取單一專案,請使用Item.read。 這是比使用 SQL 查詢id成本較低的作業。 JavaScript awaitcontainer.item("1","1").read(); 容器上具有階層式分割區索引鍵的 CRUD 使用階層式分割區索引鍵建立容器 JavaScript constcontainerDefinition = {id:"Test Database",partitionKey: {paths: ["/name","/...
AlaSQL - ( à la SQL ) [ælæ ɛskju:ɛl] - is an open source SQL database for JavaScript with a strong focus on query speed and data source flexibility for both relational data and schemaless data. It works in the web browser, Node.js, and mobile apps....
🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaScript extensions. - arangodb/arangodb
If you want to obtain the path of a file relative to the source location in the CodeQL database, use Container.getRelativePath() instead. Note, however, that a database may contain files that are not located underneath the source location; for such files, getRelativePath() will not return...
The snippet will prompt you for the ORDS instance's host name. There is no need to provide a protocol or a port, simply add the fully qualified hostname (fqdn) likeords.example.com. Fetching information Connect to the pluggable database asemily. Thanks to theDB_DEVELOPER_ROLEthe acco...