Default table collation on plugin activation?

You’re missing the point that there is collation not only for the DB but as well for tables and even fields.

Therefore from your point of view, I assume that your CREATE TABLE statement is “not complete”. Before using SQL statements, please learn the language first.

See CREATE TABLE Syntax (MySQL Manual).

Especially table_options / table_option and [DEFAULT] COLLATE [=] collation_name there in.

UPDATE:

Please see WordPress Database Charset and Collation Configuration for an in-depth description where and how to setup wordpress regarding charset and collation.

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