Node.js MySQL INSTR() Function

Last Updated : 17 Feb, 2021

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); 
    }); 
});