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                            ## 刪除重復中最小（大）

```
DELETE   
FROM 
 student
INNER JOIN ( 
  SELECT
   min(table_id) AS minId, age 
  FROM 
   student 
  GROUP BY 
   name HAVING count(*) > 1
) t2 ON t2.age = student.age 
WHERE
 student.table_id > t2.minId;
```

## 表鎖死后的操作

```
mysql -uroot -pMySQL123  -e "show processlist;" | grep -i 'delete' | awk '{printf "mysql -uroot -e \"kill %d;\"",$1}' | sh
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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