Does H2 support a collation defintion for one single column?

问题

I want to make a single H2 column in a H2 database to have a other collation (case insensitive) then the other columns (that are case sensitive).

In MySQL I would do this:

ALTER TABLE users MODIFY login VARCHAR(255) COLLATE utf8_general_ci

Is there a similar feature in H2?

回答1:

H2 only supports one collation per database (via SET COLLATION statement).

What it does support is a case-insensitive data type, VARCHAR_IGNORECASE. Internally, this data type is using String.compareToIgnoreCase. This may or may not work for your use case.

回答2:

From H2 reference guide:

ALTER TABLE users ALTER COLUMN login VARCHAR_IGNORECASE(255)

来源：https://stackoverflow.com/questions/21884157/does-h2-support-a-collation-defintion-for-one-single-column