Node.js MySQL INSTR() Function

INSTR() function is a built-in function in MySQL that is used to get the position of the first occurrence of pattern in the text.

Note: In NodeJs MySQL, INSTR() function is not case sensitive.

Syntax:

INSTR(text, pattern)

Parameters: It takes two parameters as follows:

• text: It is the given text in which the pattern is searched.
• pattern: It is the pattern which the user wants to search in the text.

Return Value: It returns a position number of the first occurrence of pattern in the text. If occurrence not found then it will return 0.

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 INSTR('GeeksForGeeks', 'geek') AS position";

    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:

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 INSTR(name, 'n') AS position FROM publishers";

    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: