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1287 Setting user variables within expressions is deprecated and will be removed in a future release
Posted by: Michael Zatkovetsky
Date: October 19, 2022 11:57AM

Hi! We use this technique to update ranking columns
SET category_rank = (SELECT @i := @i + 1)

Now we've been getting lots of these warnings:
1287 Setting user variables within expressions is deprecated and will be removed in a future release. Consider alternatives: 'SET variable=expression,

How can I change the technique to avoid the warning?

CREATE TABLE `categories` (
`client_id` int NOT NULL,
`category_id` int NOT NULL DEFAULT '0',
`category_rank` int DEFAULT NULL,
`index_low` int DEFAULT NULL,
`index_high` int DEFAULT NULL,
`category_color` varchar(45) DEFAULT NULL,
`category_name` varchar(100) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

INSERT INTO categories(client_id, category_id, category_rank, index_low, index_high, category_color, category_name) VALUES
(100, 36, NULL, 0, 44, '#006830', 'A'),
(100, 37, NULL, 45, 110, '#FBB022', 'B'),
(100, 38, NULL, 111, 222, '#F15800', 'C'),
(100, 39, NULL, 223, 400, '#FE8011', 'D'),
(104, 1, NULL, 0, 50, '#47AB5B', 'E'),
(104, 2, NULL, 51, 100, '#47A1CB', 'F'),
(104, 3, NULL, 101, 200, '#475FCB', 'G'),
(104, 4, NULL, 201, 400, '#7147CB', 'H'),
(144, 21, NULL, 300, 6000, '#47AB5B', 'I'),
(158, 15, NULL, 59, 99, '#330000', 'J'),
(158, 23, NULL, 0, 11, NULL, 'K'),
(162, 16, NULL, 0, 50, '#47AB5B', 'L'),
(162, 17, NULL, 51, 100, '#47A1CB', 'M'),
(162, 18, NULL, 101, 200, '#475FCB', 'N'),
(162, 19, NULL, 201, 400, '#7147CB', 'O'),
(192, 40, NULL, 0, 44, '#006830', 'P'),
(192, 41, NULL, 45, 110, '#FBB022', 'Q'),
(192, 42, NULL, 111, 222, '#F15800', 'R');

Many thanks in advance

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1287 Setting user variables within expressions is deprecated and will be removed in a future release
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October 19, 2022 11:57AM


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