How to conduct an Accent Sensitive search in MySql

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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.

10 Answers

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().
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.

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