在MySQL數(shù)據(jù)庫中，刪除重復(fù)行數(shù)據(jù)非常簡單?？梢赃\(yùn)用DISTINCT關(guān)鍵字找出所有不重復(fù)的行數(shù)據(jù)，并進(jìn)行刪除。下面是一些示例代碼：

1. 找出重復(fù)行數(shù)據(jù)
SELECT col1, col2, col3, COUNT(*) as cnt FROM table_name  
GROUP BY col1, col2, col3 HAVING cnt >1;

2. 刪除重復(fù)行數(shù)據(jù)
DELETE FROM table_name WHERE id NOT IN  
(SELECT MIN(id) FROM table_name GROUP BY col1, col2, col3);

3. 刪除表中所有重復(fù)行數(shù)據(jù)
CREATE TABLE new_table_name LIKE table_name;
INSERT INTO new_table_name SELECT DISTINCT * FROM table_name;
DROP TABLE table_name;
RENAME TABLE new_table_name TO table_name;

在使用以上示例代碼的時候，需要做出適當(dāng)?shù)恼{(diào)整以符合你自己數(shù)據(jù)庫中的數(shù)據(jù)結(jié)構(gòu)。另外，記得備份你的數(shù)據(jù)庫以防不測，數(shù)據(jù)庫操作非常危險。