Change Server and Client Collation and Charsets in mysql -

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i need change mysql server variables 1 one (without using my.cnf file). need this

enter image description here

how can change these variable names without editing my.cnf?

update

this looks now.

enter image description here

can run update statements on table?

update mytable set value = 'utf8mb4_unicode_ci' variable_name = 'collation_connection';

and on other necessary updates.


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