sql - MYSQL statement issues please point out - 


  if present (select from person_datetime * where `key` = 'tag' and 'value' = 'blogger ') Start UPDATE person_data SET' value '=' AAI 'end and INSERT start in other person ID (IN, `key',` value ', person_id) IFNULL (maximum +1 ID),' AA ' , 'BBB', 1 person if the data ends;   
 It is a complaint that there is a problem in line 1. Please tell why I did wrong   
 
 
 change  END if  to  END  should do this.

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