MySQL - How to select data by string length
-
18-09-2019 - |
Question
SELECT * FROM table ORDER BY string_length(column);
Is there a MySQL function to do this (of course instead of string_length
)?
Solution
You are looking for CHAR_LENGTH()
to get the number of characters in a string.
For multi-byte charsets LENGTH()
will give you the number of bytes the string occupies, while CHAR_LENGTH()
will return the number of characters.
OTHER TIPS
select * from table order by length(column);
Documentation on the length() function, as well as all the other string functions, is available here.
Having a look at MySQL documentation for the string functions, we can also use CHAR_LENGTH()
and CHARACTER_LENGTH()
as well.
The function that I use to find the length of the string is length
, used as follows:
SELECT * FROM table ORDER BY length(column);
I used this sentences to filter
SELECT table.field1, table.field2 FROM table WHERE length(field) > 10;
you can change 10 for other number that you want to filter.
select * from tablename where 1 having length(fieldname)=fieldlength
Example if you want to select from customer the entrys with a name shorter then 2 chars.
select * from customer where 1 having length(name)<2