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mysqlsql-updatebulk

Bulk update mysql with where statement


How to update mysql data in bulk ? How to define something like this :

UPDATE `table` 
WHERE `column1` = somevalues
SET  `column2` = othervalues

with somevalues like :

VALUES
    ('160009'),
    ('160010'),
    ('160011');

and othervalues :

VALUES
    ('val1'),
    ('val2'),
    ('val3');

maybe it's impossible with mysql ? a php script ?


Solution

  • The easiest solution in your case is to use ON DUPLICATE KEY UPDATE construction. It works really fast, and does the job in easy way.

    INSERT into `table` (id, fruit)
        VALUES (1, 'apple'), (2, 'orange'), (3, 'peach')
        ON DUPLICATE KEY UPDATE fruit = VALUES(fruit);
    

    or to use CASE construction

    UPDATE table
    SET column2 = (CASE column1 WHEN 1 THEN 'val1'
                     WHEN 2 THEN 'val2'
                     WHEN 3 THEN 'val3'
             END)
    WHERE column1 IN(1, 2 ,3);