MySQL query to get the character length for all the values in a column?

To get the character length, use the CHAR_LENGTH() method. Let us first create a table −

mysql> create table DemoTable    -> (    -> Name varchar(100)    -> ); Query OK, 0 rows affected (1.04 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Robert'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Bob'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values('David'); Query OK, 1 row affected (0.15 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+--------+ | Name   | +--------+ | John   | | Robert | | Bob    | | David  | +--------+ 4 rows in set (0.00 sec)

Get the character length −

mysql> select char_length(Name) from DemoTable;

Output

This will produce the following output −

+-------------------+ | char_length(Name) | +-------------------+ | 4                 | | 6                 | | 3                 | | 5 | +-------------------+ 4 rows in set (0.00 sec)