Which accented characters are considered the same?

Question

In MySQL, certain characters are considered the same when performing searches, e.g. 'n' and 'ñ'; unless you specify BINARY in the condition.

Is there a list somewhere of the characters that are considered the same?

Answer 1

Case or accent sensitivity behavior is defined by the collation you are using.

The full list of comparable characters in a given collation can be found in collationcharts where you find the MySQL list of collations

If you find your collation in that list you will see a chart of comparable characters.

Answer 2

Here is a summary of the utf8 collations: http://mysql.rjweb.org/utf8_collations.html

It shows that 'n' and 'ñ' are considered equal for all but utf8_bin, utf8_spanish2_ci, and utf8_spanish_ci In the Spanish cases, Ñ and ñ are treated like a separate letter and sort after nz and before o.

(Latvian and Polish have a couple of flavors of n that work like the Spanish ñ; but perhaps that is in of importance to you.)