53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
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const mysql = require('mysql2');
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const connection = mysql.createConnection({
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host: 'nj-cdb-3pwh2kz1.sql.tencentcdb.com',
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port: 20784,
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user: 'jiebanke',
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password: 'aiot741$12346',
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database: 'niumall'
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});
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console.log('正在连接数据库...');
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connection.connect((err) => {
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if (err) {
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console.error('连接失败:', err.message);
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return;
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}
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console.log('连接成功，查询数据...');
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// 查询供应商数量
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connection.query('SELECT COUNT(*) as count FROM suppliers', (err, results) => {
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if (err) {
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console.error('查询供应商失败:', err.message);
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connection.end();
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return;
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}
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console.log('供应商总数:', results[0].count);
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// 查询司机数量
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connection.query('SELECT COUNT(*) as count FROM drivers', (err, results) => {
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if (err) {
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console.error('查询司机失败:', err.message);
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connection.end();
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return;
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}
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console.log('司机总数:', results[0].count);
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// 查询订单数量
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connection.query('SELECT COUNT(*) as count FROM orders', (err, results) => {
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if (err) {
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console.error('查询订单失败:', err.message);
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connection.end();
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return;
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}
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console.log('订单总数:', results[0].count);
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connection.end();
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console.log('验证完成');
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});
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});
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});
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});
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