add errcode for set role

Author: imtbkcat

mysql/errcode.go

@@ -894,6 +894,7 @@ const (
 	ErrInvalidJSONPathWildcard                                      = 3149
 	ErrInvalidJSONContainsPathType                                  = 3150
 	ErrJSONUsedAsKey                                                = 3152
+	ErrRoleNotGranted                                               = 3530
 	ErrWindowNoSuchWindow                                           = 3579
 	ErrWindowCircularityInWindowGraph                               = 3580
 	ErrWindowNoChildPartitioning                                    = 3581

mysql/errname.go

@@ -912,6 +912,7 @@ var MySQLErrName = map[uint16]string{
 	ErrWindowNoGroupOrderUnused:                              "ASC or DESC with GROUP BY isn't allowed with window functions; put ASC or DESC in ORDER BY",
 	ErrWindowExplainJson:                                     "To get information about window functions use EXPLAIN FORMAT=JSON",
 	ErrWindowFunctionIgnoresFrame:                            "Window function '%s' ignores the frame clause of window '%s' and aggregates over the whole partition",
+	ErrRoleNotGranted:                                        "%s is is not granted to %s",
 
 	// TiDB errors.
 	ErrMemExceedThreshold: "%s holds %dB memory, exceeds threshold %dB.%s",