Node.js MySQL MID() Function
Last Updated :
07 Oct, 2021
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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:
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("Geeks For Geeks", 7, 20) AS MID_Output`;
db_con.query(query, (err, rows) => {
if (err) throw err;
console.log(rows);
});
});
Output:
Example 2:
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:
