Node.js MySQL FIND_IN_SET() Function

FIND_IN_SET() function is a built-in function in MySQL that is used to get the position of the first occurrence of value string in a list of strings separated by comma(‘,’).

Syntax:

FIND_IN_SET(value, list_of_string)

Parameters: It takes two parameters as follows:

• value: It is the value to be searched.
• list_of_string: It is the list of strings separated by comma (‘,’).

Return Value: It returns the position of first occurrence of value string in a list of string separated by comma (‘,’)

Module Installation: Install the mysql module using the following command:

npm install mysql

Database: Our SQL publishers table preview with sample data is shown below:

Example 1:

index.js

const mysql = require("mysql");

let db_con  = mysql.createConnection({
    host: "localhost",
    user: "root",
    password: '',
    database: 'gfg_db'
});

db_con.connect((err) => {
    if (err) {
      console.log("Database Connection Failed !!!", err);
      return;
    }

    console.log("We are connected to gfg_db database");

    // Here is the query
    let query = "SELECT FIND_IN_SET('2', '1,12,2,32') AS Output";

    db_con.query(query, (err, rows) => {
        if(err) throw err;

        console.log(rows);
    });
});

Run the index.js file using the following command:

node index.js

Output:

Example 2: Advance Example

index.js

const mysql = require("mysql");

let db_con  = mysql.createConnection({
    host: "localhost",
    user: "root",
    password: '',
    database: 'gfg_db'
});

db_con.connect((err) => {
    if (err) {
      console.log("Database Connection Failed !!!", err);
      return;
    }

    console.log("We are connected to gfg_db database");

    // Here is the query
    let sub_query =
"(SELECT GROUP_CONCAT(name) FROM publishers)";

    let main_query =
`SELECT FIND_IN_SET('lily', ${sub_query}) AS lily_position`;

    db_con.query(main_query, (err, rows) => {
        if(err) throw err;

        console.log(rows);
    });
});

Run the index.js file using the following command:

node index.js

Output: