Node.js MySQL MID() Function
MID() Function is a Builtin Function in MySQL which is used to get substring of input string between given range inclusive.
Syntax:
MID(input_string, from, length)
Parameters: MID() function accepts three parameters as mentioned above and described below.
- input_string: Substring of this input will be calculated
- from:Substring will be taken from this position
- length: Length of substring
Return Value:
MID() function returns substring of input string between given starting position and length. If length is out of string then the extra part is ignored.
Modules:
- mysql: To handle MySQL Connection and Queries
npm install mysql
SQL publishers Table Preview:
Example 1:
Javascript
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" ); // notice the ? in query let query = `SELECT MID( "Beginner For Beginner" , 7, 20) AS MID_Output`; db_con.query(query, (err, rows) => { if (err) throw err; console.log(rows); }); }); |
Output:
Example 2:
Javascript
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" ); // notice the ? in query let query = `SELECT name, MID(name, 1, 3) AS MID_Output FROM publishers`; db_con.query(query, (err, rows) => { if (err) throw err; console.log(rows); }); }); |
Output:
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