Normalde vb nin bu özelliği var zaten ama madem sorgu istiyosun
UPDATE deletionlog SET username = 'tespara' WHERE username ='divran.com';
UPDATE editlog SET username = 'tespara' WHERE username ='divran.com';
UPDATE groupmessage SET postusername = 'tespara' WHERE postusername ='divran.com';
UPDATE phrase SET username = 'tespara' WHERE username ='divran.com';
UPDATE picturecomment SET postusername = 'tespara' WHERE postusername ='divran.com';
UPDATE pmreceipt SET tousername = 'tespara' WHERE tousername ='divran.com';
UPDATE pmtext SET fromusername = 'tespara' WHERE fromusername ='divran.com';
UPDATE post SET username = 'tespara' WHERE username ='divran.com';
UPDATE post_thanks SET username = 'tespara' WHERE username ='divran.com';
UPDATE postedithistory SET username = 'tespara' WHERE username ='divran.com';
UPDATE strikes SET username = 'tespara' WHERE username ='divran.com';
UPDATE template SET username = 'tespara' WHERE username ='divran.com';
UPDATE templatehistory SET username = 'tespara' WHERE username ='divran.com';
UPDATE user SET username = 'tespara' WHERE username ='divran.com';
UPDATE thread SET postusername = 'tespara' WHERE postusername ='divran.com';
UPDATE usernote SET username = 'tespara' WHERE username ='divran.com';
UPDATE visitormessage SET postusername = 'tespara' WHERE postusername ='divran.com';
divran.com eski isim yeni isim
tespara