Update multiple columns for multiple rows in one query of SQL

Question

I am trying to set multiple columns for multiple rows in one query, but so far no luck.

Here\'s how my table looks like

Table: user

Answer 1

try this

 update user
 set ext_flag = 'Y', admin_role = 'admin', ext_id = 
 case 
 when user_id = 2 then 345
 when user_id = 4 then 456
 when user_id = 5 then 789
 end
 **WHERE user_id  in (2,4,5)**

Answer 2

You can also hack the insert operation :

INSERT INTO mytable (id, a, b, c)
VALUES (1, 'a1', 'b1', 'c1'),
(2, 'a2', 'b2', 'c2'),
(3, 'a3', 'b3', 'c3'),
(4, 'a4', 'b4', 'c4'),
(5, 'a5', 'b5', 'c5'),
(6, 'a6', 'b6', 'c6')
ON DUPLICATE KEY UPDATE id=VALUES(id),
a=VALUES(a),
b=VALUES(b),
c=VALUES(c)