MySQL query to find all rows where string contains less than four characters?

Use CHAR_LENGTH() and find the count of characters in every string and then get the strings which are less than four characters. Let us first create a table −

mysql> create table DemoTable -> ( -> Name varchar(100) -> ); Query OK, 0 rows affected (1.38 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('Bob'); Query OK, 1 row affected (1.60 sec) mysql> insert into DemoTable values('Carol'); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable values('David'); Query OK, 1 row affected (1.83 sec) mysql> insert into DemoTable values('Sam'); Query OK, 1 row affected (0.32 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+-------+ | Name | +-------+ | John | | Bob | | Carol | | David | | Sam | +-------+ 5 rows in set (0.00 sec)

Following is the query to find all rows where string contains less than four characters −

mysql> select *from DemoTable where CHAR_LENGTH(Name) < 4;

This will produce the following output −

+------+ | Name | +------+ | Bob | | Sam | +------+ 2 rows in set (0.00 sec)