I have a MySQL table with utf8 general ci collation. In the table, I can see two entries:
abad
abád
I am using a query that looks like this:
SELECT * FROM `words` WHERE `word` = 'abád'
The query result gives both words:
abad
abád
Is there a way to indicate that I only want MySQL to find the accented word? I want the query to only return
abád
I have also tried this query:
SELECT * FROM `words` WHERE BINARY `word` = 'abád'
It gives me no results. Thank you for the help.
If your searches on that field are always going to be accent-sensitive, then declare the collation of the field as utf8_bin (that'll compare for equality the utf8-encoded bytes) or use a language specific collation that distinguish between the accented and un-accented characters.
col_name varchar(10) collate utf8_bin
If searches are normally accent-insensitive, but you want to make an exception for this search, try;
WHERE col_name = 'abád' collate utf8_bin
Update for MySQL 8.0, plus addressing some of the Comments and other Answers:
The CHARACTER SET matches the beginning of the COLLATION.
Any COLLATION name ending in _bin will ignore both upper/lower case and accents. Examples: latin1_bin, utf8mb4_bin.
Any COLLATION name containing _as_ will ignore accents, but do case folding or not based on _ci vs _cs.
To see the collations available (on any version), do SHOW COLLATION;.
utf8mb4 is now the default charset. You should be using that instead of utf8.
It is better to have the CHARACTER SET and COLLATION set 'properly' on each column (or defaulted by the table definition) than to dynamically use any conversion routine such as CONVERT().
In my version (MySql 5.0), there is not available any utf8 charset collate for case insensitive, accent sensitive searches. The only accent sensitive collate for utf8 is utf8_bin. However it is also case sensitive.
My work around has been to use something like this:
SELECT * FROM `words` WHERE LOWER(column) = LOWER('aBád') COLLATE utf8_bin
Accepted answer is good, but beware that you may have to use COLLATE utf8mb4_bin instead!
WHERE col_name = 'abád' collate utf8mb4_bin
Above fixes errors like:
MySQL said: Documentation 1253 - COLLATION 'utf8_bin' is not valid for
CHARACTER SET 'utf8mb4'
The MySQL bug, for future reference, is http://bugs.mysql.com/bug.php?id=19567.
Check to see if the database table collation type end with "_ci", This stands for case insensitive...
Change it to collation the same or nearest name without the "_ci" ...
For example... change "utf8_general_ci" to "utf8_bin"
Mke
I was getting the same error.
I've changed the collation of my table to utf8_bin (through phpMyAdmin) and the problem was solved.
SELECT * FROM `words` WHERE column = 'abád' collate latin1_General_CS
(or your collation including cs)
You can try searching for the hex variable of the character, HEX() within mysql and use a similar function within your programming language and match these. This worked well for me when i was doing a listing where a person could select the first letter of a person.
Well, you just described what utf8_general_ci collation is all about (a, á, à, â, ä, å all equals to a in comparison).
There have also been changes in MySQL server 5.1 in regards to utf8_general_ci and utf8_unicode_ci so it's server version dependent too. Better check the docs.
So, If it's MySQL server 5.0 I'd go for utf8_unicode_ci instead of utf8_general_ci which is obviously wrong for your use-case.
That works for me for an accent insensitive and case insensitive search in MySql server 5.1 in a database in utf8_general_ci, where column is a LONGBLOB.
select * from words where '%word%' LIKE column collate utf8_unicode_ci
with
select * from words where'%word%' LIKE column collate utf8_general_ci
the result is case sensitive but not accent sensitive.
Is there any way I can write a select query with where clause, that ignores non-latin characters?
For example there is Lithuanian character Ė, obviously the equivalent in latin character would be E. So is there anyway I can write a query like this:
SELECT * FROM `table` WHERE `keyword` LIKE %E%;
And I want it to return all records that contain any of these characters: E,Ė,Ę, is there any way I can achieve this automatically with SQL (or even in PHP level)?
You don't say what you've tried. You also don't say what character set (utf-8) and collation your table contains. Those are the ways you control those things by default.
You could try this:
SELECT * FROM `table` WHERE `keyword` COLLATE utf8_general_ci LIKE %E%
Or this
SELECT * FROM `table` WHERE `keyword` COLLATE utf8_lithuanian_ci LIKE %E%
I don't know if the second one will work for what you want, because I don't know Lithuanian. Are E, Ė, and Ę considered the same letter in the dictionary? If they are not, then the Lithuanian collation won't match them to each other.
If you do find that a particular collation works, you can alter your column to use that collation by default.
alter table `table`
change `keyword` `keyword` collate utf8_lithuanian_ci
That's a good idea because then you have a chance of indexes speeding your search.
Like the Title.
What is the SQL Query To Find in MySQL DB Table without considering the accented letters?
So, if I search "abcdè" I find "abcde"
By default utf8 strings ignore accents as they use the utf8_general_ci collation.
If you're not using utf8 (and why not?) Then you probably want to use the COLLATE command:
http://dev.mysql.com/doc/refman/5.0/en/charset-collate.html
SELECT *
FROM t1
WHERE _latin1 'Müller' COLLATE latin1_german2_ci = k;
SELECT *
FROM t1
WHERE k LIKE _latin1 'Müller' COLLATE latin1_german2_ci;
Also, you can apparently use the 'SET NAMES' command to alter the comparisons:
MySQL diacritic insensitive search (spanish accents)
Collation is the set of rules your DB is using to compare values. "all" you have to do is choose the right collation for your application. That said, #Danack57 above already gave you that piece of information.
I have a mysql table, I made it in latin1 style and it is all that way. How can I make a table that is all latin1 except one column, which i need to be able to accept chinese characters?
Also, Whats the best structure for a column with chinese characters?
alter table your_table
modify column
chinese_column varchar(255) collate utf8_general_ci; <-- or any relevant collate
details can be found here
i need to query my database and find results :
mysql_query("select * from ".ALU_TABLE." where username like '%$q%' or name like '%$q%'");
if i have a name in my table such as Book and i enter book in search box it wont show the Book
i need to query my database as not to be case sensitive.
You can use the LOWER() function
... WHERE LOWER(username) LIKE blabl OR LOWER(name) LIKE asdasd
You need to append something like COLLATE utf8_general_ci to your query. (The _ci suffix stands for case insensitive.)
Have a look at the documentation: 9.1.7.1. Using COLLATE in SQL Statements:
With the COLLATE clause, you can override whatever the default collation is for a comparison. COLLATE may be used in various parts of SQL statements.