MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
The SET
statement has several forms. Descriptions for those forms that are
not associated with a specific server capability appear in
subsections of this section:
SETenables you to assign values to variables that affect the operation of the server or clients. See Section 15.7.6.1, “SET Syntax for Variable Assignment”.var_name=valueSET CHARACTER SETandSET NAMESassign values to character set and collation variables associated with the current connection to the server. See Section 15.7.6.2, “SET CHARACTER SET Statement”, and Section 15.7.6.3, “SET NAMES Statement”.
Descriptions for the other forms appear elsewhere, grouped with other statements related to the capability they help implement:
SET DEFAULT ROLEandSET ROLEset the default role and current role for user accounts. See Section 15.7.1.9, “SET DEFAULT ROLE Statement”, and Section 15.7.1.11, “SET ROLE Statement”.SET PASSWORDassigns account passwords. See Section 15.7.1.10, “SET PASSWORD Statement”.SET RESOURCE GROUPassigns threads to a resource group. See Section 15.7.2.4, “SET RESOURCE GROUP Statement”.SET TRANSACTION ISOLATION LEVELsets the isolation level for transaction processing. See Section 15.3.7, “SET TRANSACTION Statement”.