Perform random SELECT

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I have a table where I always want to show a single record randomly.

I’m doing like this:

SELECT `id` FROM `tabela` ORDER BY RAND() LIMIT 1

I see that in this way the same records repeat a lot, there is a better way to do?

mysql select-sql

1 answer

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With Mysql 4.1 or later, you can do the following:

SELECT id FROM tabela WHERE id >= (SELECT FLOOR(MAX(id) * RAND()) FROM tabela) ORDER BY id LIMIT 1;

Note that this method only works on tables with unique Ids.

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