Does a utf8_unicode_cs collation exist?

Question

Does anyone know if a utf8_unicode_cs collation for MySQL exists? So far, my searches have come up dry. If it simply doesn\'t exist yet, is it fairly straight-forward to cre

Answer 1

I came across the same issue and after some Googling, it seems that MySQL doesn't include it. To "simulate it", as you put it,

1) To ensure case-sensitivity in the DB: set the table column to utf8_bin collation
This allows:

• strict SELECTs: SELECT "Joe" will NOT return rows with "joe" / "joE" / "jOe" / etc
• strict UNIQUE index: a column with a UNIQUE index will treat case differences as different values. For example, if a utf8_unicode_ci collation is used, inserting "Joe" on a table that already has "joe" will trigger a "Duplicate key" error. If ut8_bin is used, inserting "Joe" will work fine.

2) To get the proper ordering in results: add the collation to the SQL query:

SELECT ... ORDER BY column COLLATE utf8_unicode_ci