How to bulk update mysql data with one query?

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$query = mysql_query("UPDATE a SET fruit = '**apple**' WHERE id = '**1**' ");
$query2 = mysql_query("UPDATE a SET fruit = '**orange**' WHERE id = '**2**' ");
$query3 = mysql_query("UPDATE a SET fruit = '**peach**' WHERE id = '**3**' ");

is there any way to simplify it to one query?

4 Answers

Using IF() function in MySQL this can be achieved as

UPDATE a
SET fruit = IF (id = 1, 'apple', IF (id = 2, 'orange', IF (id = 3, 'peach', fruit)));

Based on the warning message

'VALUES function' is deprecated and will be removed in a future release. Please use an alias (INSERT INTO ... VALUES (...) AS alias) and replace VALUES(col) in the ON DUPLICATE KEY UPDATE clause with alias.col instead

One may consider a slight modification of Yaroslav's solution like so:

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

It does just the same thing but mutes the warning message.

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