js修改mysql数据库数据_Node.js操作mysql数据库增删改查
關(guān)于node.js操作mysql數(shù)據(jù)庫的相關(guān)介紹請閱讀全文吧。下文介紹的非常詳細，具體內(nèi)容如下所示：
安裝mysql模塊
npm install mysql
數(shù)據(jù)庫準備
mysql server所在的機器IP地址是192.168.0.108，登錄賬戶就用root@123456
在mysql中創(chuàng)建test數(shù)據(jù)庫
在test數(shù)據(jù)庫中創(chuàng)建一張users表
操作
連接數(shù)據(jù)庫
var mysql=require('mysql');
var connection = mysql.createConnection({
host : '192.168.0.108',user : 'root',password : '123456',database : 'test1',port:'3306'
});
connection.connect();
插入一個user
var usr={name:'zhangsan',password:'pwdzhangsan',mail:'zhangsan@gmail.com'};
connection.query('insert into users set ?',usr,function(err,result) {
if (err) throw err;
console.log('inserted zhangsan');
console.log(result);
console.log('\n');
});
更新user，帶條件
connection.query('update users set password="ddd" where name="zhangsan"',{password:'ppp'},result) {
if (err) throw err;
console.log('updated zhangsan\'s password to ddd');
console.log(result);
console.log('\n');
});
刪除一個user，帶條件
connection.query('delete from users where name="zhangsan"',result) {
if (err) throw err;
console.log('deleted zhangsan');
console.log(result);
console.log('\n');
});
查詢user，所有
connection.query('select * from users',rows,fields) {
if (err) throw err;
console.log('selected after deleted');
for(var i= 0,usr;usr=rows[i++];){
console.log('user nae='+usr.name + ',password='+usr.password);
}
console.log('\n');
});
關(guān)閉數(shù)據(jù)庫連接
connection.end();
基本的CRUD完成
mysql模塊的完整功能說明參見官方：
全部demo代碼
var mysql=require('mysql');
var connection = mysql.createConnection({
host : '192.168.0.108',port:'3306'
});
connection.connect();
var usr={name:'zhangsan',result) {
if (err) throw err;
console.log('inserted zhangsan');
console.log(result);
console.log('\n');
});
connection.query('select * from users',fields) {
if (err) throw err;
console.log('selected after inserted');
for(var i= 0,password='+usr.password);
}
console.log('\n');
});
connection.query('update users set password="ddd" where name="zhangsan"',result) {
if (err) throw err;
console.log('updated zhangsan\'s password to ddd');
console.log(result);
console.log('\n');
});
connection.query('select * from users',fields) {
if (err) throw err;
console.log('selected after updated');
for(var i= 0,password='+usr.password);
}
console.log('\n');
});
connection.query('delete from users where name="zhangsan"',result) {
if (err) throw err;
console.log('deleted zhangsan');
console.log(result);
console.log('\n');
});
connection.query('select * from users',password='+usr.password);
}
console.log('\n');
});
connection.end();
總結(jié)
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