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