Order strings by length of characters IN mYsql?

You can order by length of characters with the help of CHAR_LENGTH() function from MySQL. The function returns the number of characters i.e. 4 for the following string −

AMIT

To order strings by length of characters, the following is the syntax −

select *from yourTableName order by CHAR_LENGTH(yourColumnName);

To understand the above concept, let us first create a table. The following is the query to create a table −

mysql> create table OrderByCharacterLength    −> (    −> BookName varchar(200)    −> ); Query OK, 0 rows affected (1.97 sec)

Insert some records in the table with the help of insert command. The query is as follows −

mysql> insert into OrderByCharacterLength values('Let us C'); Query OK, 1 row affected (0.31 sec) mysql> insert into OrderByCharacterLength values('Introduction to C'); Query OK, 1 row affected (0.20 sec) mysql> insert into OrderByCharacterLength values('Data Structure And Algorithm in Java '); Query OK, 1 row affected (0.13 sec) mysql> insert into OrderByCharacterLength values('C in Depth'); Query OK, 1 row affected (0.17 sec) mysql> insert into OrderByCharacterLength values('Java Projects'); Query OK, 1 row affected (0.23 sec)

Let us display all records in a sequence as inserted in the table above. The query is as follows −

mysql> select *from OrderByCharacterLength;

The following is the output −

+---------------------------------------+ | BookName                              | +---------------------------------------+ | Let us C                              | | Introduction to C | | Data Structure And Algorithm in Java | | C in Depth | | Java Projects | +---------------------------------------+ 5 rows in set (0.00 sec)

Here is the query that display all records arranged according to the length of characters. If a column value has minimum length then it gets higher priority and will get displayed first.

The query is as follows −

mysql> select *from OrderByCharacterLength order by CHAR_LENGTH(BookName);

The following is the output −

+---------------------------------------+ | BookName                              | +---------------------------------------+ | Let us C                              | | C in Depth                            | | Java Projects                         | | Introduction to C                     | | Data Structure And Algorithm in Java | +---------------------------------------+ 5 rows in set (0.00 sec)