Query error

[macacoloco]

UPDATE t_characters SET a_char_index WHERE a_index = %d

query error : query[uPDATE t_characters SET a_char_index WHERE a_index = 358] / error[You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE a_index = 358' at line 1]

 

 

 

Is fixed: UPDATE t_characters SET a_char_index = a_index WHERE a_index = %d

 

Second query:

 

UPDATE t_characters SET a_char_index = %d, a_assassinatos = %d, a_assassinatos2 = %d, a_assassinatos3 = %d, a_assassinatos4 = %d

 

 

 

 

Someone can help for fix this pls? I need update only 1 character no all characters