Node.js MySQL LENGTH() Function Last Updated : 07 Oct, 2021 Summarize Comments Improve Suggest changes Share Like Article Like Report LENGTH() Function is a Builtin function in MySQL which is used to get length of given string in bytes. Syntax: LENGTH(input_string) Parameters: LENGTH() function accepts a single parameter as mentioned above and described below. input_string: We will get number of characters of this string Return Value: LENGTH() function returns length of given string in bytes. Modules: mysql: To handle MySQL Connection and Queriesnpm 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"); // here is the query let query = `SELECT LENGTH('Geeks for Geeks') AS length_in_bytes`; 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"); // here is the query let query = `SELECT name, LENGTH(name) AS length_in_bytes FROM publishers`; db_con.query(query, (err, rows) => { if (err) throw err; console.log(rows); }); }); Output: Comment More infoAdvertise with us Next Article Node.js MySQL LENGTH() Function P pratikraut0000 Follow Improve Article Tags : Technical Scripter Web Technologies Node.js Technical Scripter 2020 NodeJS-MySQL +1 More Similar Reads Node.js MySQL LEFT() Function LEFT() Function is a Builtin function in MySQL which is used to get Prefix of a specific size of Given String. Syntax: LEFT(input_string, size_of_prefix) Parameters: LEFT() function accepts two parameters as mentioned above and described below. input_string: We will get prefix of this input stringsi 2 min read Node.js MySQL CHAR_LENGTH() Function CHAR_LENGTH() function is a built-in function in MySQL that is used to get a number of characters in a given string. Syntax: CHAR_LENGTH(input_string)Parameters: It takes one parameter as follows: input_string: It is the given string whose length is to be determined.Return Value: It returns a number 2 min read Node.js MySQL LTRIM() Function LTRIM() Function is a Builtin Function in MySQL which is used to trim all spaces from left side of input string. Syntax: LTRIM(string) Parameters: LTRIM() function accepts a single parameters as mentioned above and described below. string: String needed to be trimmed from left side Return Value: LTR 2 min read Node.js MySQL LCASE() Function LCASE() function is a built-in function in MySQL that is used to convert all characters of a given string to lowercase. Syntax: LCASE(input_string)Parameters: It takes one parameter as follows: input_string: Input string which is passed as a parameter to convert this string to lowercase.Return Value 2 min read Node.js MySQL LOWER() Function LOWER() Function is a Builtin function in MySQL which is used to convert all characters of given string to lowercase. Syntax: LOWER(input_string) Parameters: LOWER() function accepts a single parameter as mentioned above and described below. input_string: We will convert this string to lowercase Ret 1 min read Like