diff --git a/javascript/query/select.js b/javascript/query/select.js
index 8456551..d9c66c9 100644
--- a/javascript/query/select.js
+++ b/javascript/query/select.js
@@ -1,20 +1,21 @@
-const db = require("./db");
+const db = require('./db')
 
-async function asyncFunction() {
+async function asyncFunction(){
     try {
-        // Use pool.query to get all contacts
-        var rows = await db.pool.query("SELECT * FROM demo.contacts");
 
-        // Print list of contacts
-        for (i = 0, len = rows.length; i < len; i++) {
-            console.log(`(id=${rows[i].id}) ${rows[i].first_name} ${rows[i].last_name} <${rows[i].email}>`);
+        conn = await db.pool.getConnection()
+        var rows = await conn.query("SELECT * from demo.contacts")
+        
+        for (let i = 0; i < rows.length; i++) {
+            console.log(`(id=${rows[i].id}) ${rows[i].first_name} ${rows[i].last_name} <${rows[i].email}>`)
+            
         }
-    } catch (err) {
-        // Print errors
-        console.log(err);
-    } finally {
-		db.pool.end();
-	}
+    } catch (error) {
+        console.log(error)
+    } finally{
+        if (conn) await conn.release();
+        db.pool.end()
+    }
 }
 
-asyncFunction();
\ No newline at end of file
+asyncFunction()