Second, apply the LENGTH function to return the number of characters of the full name of each employee.First, use the CONCAT function to construct the full name of the employee by concatenating the first name, space, and last name.ORDER BY len DESC LIMIT 5 Code language: SQL (Structured Query Language) ( sql ) LENGTH( CONCAT(first_name, ' ', last_name)) AS len FROM SELECTĬONCAT(first_name, ' ', last_name) AS full_name, The following statement returns the top five employees with the longest names. See the following employees table in the sample database. (1 row) Code language: SQL (Structured Query Language) ( sql ) The following statement uses the LENGTH function to return the number of characters the string SQL: SELECT LENGTH( 'SQL') Ĭode language: SQL (Structured Query Language) ( sql ) length To get the number of characters in a string in MySQL and PostgreSQL, you use the CHAR_LENGTH function instead.

The LENGTH function returns the number of bytes in some relational database systems such as MySQL and PostgreSQL. For other character sets, they may be different. The number of characters is the same as the number of bytes for the ASCII strings. It returns NULL if the input string is NULL. If the input string is empty, the LENGTH returns 0. LENGTH(string) Code language: SQL (Structured Query Language) ( sql ) The following illustrates the syntax of the LENGTH function. Some database systems use the LEN function that has the same effect as the LENGTH function. The LENGTH function is available in every relational database systems. The SQL LENGTH function returns the number of characters in a string. Summary: in this tutorial, you will learn how to use the SQL LENGTH function to get the number of characters in a string.

Mysql like at least 5 characters