SQL 查询更新条件

Question

我需要为此查询添加一个条件：

UPDATE o36t_orders s 
SET s.bonifico = EXISTS (SELECT 1 
                         FROM mytable d 
                         WHERE d.Descrizione_operazione 
                         LIKE CONCAT('%', s.shipping_number,'%') )

条件应该是仅当s.bonifico != 1时才进行更新

Answer 1

你可能想要的是：

UPDATE o36t_orders s 
SET s.bonifico = EXISTS (SELECT 1 
                         FROM mytable d 
                         WHERE d.Descrizione_operazione 
                         LIKE CONCAT('%', s.shipping_number,'%') )
WHERE s.bonifico != 1;

Answer 2

您可以使用此代码解决您的问题：

//CONNECT DB - FETCH RESULT
$variable=$row['s.bonifico'];
if($variable!='1'){    
UPDATE o36t_orders s SET s.bonifico = EXISTS (SELECT 1 FROM mytable d WHERE d.Descrizione_operazione LIKE CONCAT('%', s.shipping_number,'%') )
}