Test connection

Author: tshemsedinov

JavaScript/1-test.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const { Pool } = require('pg');
+
+const pool = new Pool({
+  host: '127.0.0.1',
+  port: 5432,
+  database: 'application',
+  user: 'marcus',
+  password: 'marcus',
+});
+
+const query = (sql, values, callback) => {
+  const startTime = new Date().getTime();
+  if (typeof values === 'function') {
+    callback = values;
+    values = [];
+  }
+  pool.query(sql, values, (err, res) => {
+    const endTime = new Date().getTime();
+    const executionTime = endTime - startTime;
+    console.log(`Execution time: ${executionTime}`);
+    if (callback) callback(err, res);
+  });
+};
+
+// Usage
+
+const fields = ['schemaname', 'tablename', 'tableowner', 'hasindexes'];
+const sql = 'SELECT ' + fields.join(', ') +
+  ' FROM pg_catalog.pg_tables WHERE tableowner = $1';
+query(sql, ['marcus'], (err, res) => {
+  console.dir({ res });
+  if (err) {
+    throw err;
+  }
+  console.table(res.fields);
+  console.table(res.rows);
+  pool.end();
+});