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Node.js MySQL SELECT Unique Record

(WHERE Clause)

Retrieve a unique data from the table "employees".

Create a js file named selectwhere.js having the following data in DBexample folder.

  1. var mysql = require('mysql');  
  2. var con = mysql.createConnection({  
  3. host: "localhost",  
  4. user: "root",  
  5. password: "12345",  
  6. database: "javatpoint"  
  7. });  
  8. con.connect(function(err) {  
  9. if (err) throw err;  
  10. con.query("SELECT * FROM employees WHERE id = '1'", function (err, result) {  
  11. if (err) throw err;  
  12. console.log(result);  
  13. });  
  14. });  

Now open command terminal and run the following command:

  1. Node selectwhere.js  

Node.js unique record 1


Node.js MySQL Select Wildcard

Retrieve a unique data by using wildcard from the table "employees".

Create a js file named selectwildcard.js having the following data in DBexample folder.

  1. var mysql = require('mysql');  
  2. var con = mysql.createConnection({  
  3. host: "localhost",  
  4. user: "root",  
  5. password: "12345",  
  6. database: "javatpoint"  
  7. });  
  8. con.connect(function(err) {  
  9. if (err) throw err;  
  10. con.query("SELECT * FROM employees WHERE city LIKE 'A%'", function (err, result) {  
  11. if (err) throw err;  
  12. console.log(result);  
  13. });  
  14. });  

Now open command terminal and run the following command:

  1. Node selectwildcard.js  

It will retrieve the record where city start with A.

Node.js unique record 2

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