如何仅查询ID 3,4,5和1？

Question

我有以下查询:

SELECT id,name
FROM categ
WHERE email_activated='1'
ORDER BY id DESC

但我只想查询ID 3,4,5和1.

如何在查询中指定这些ID？

Answer 1

使用IN子句

SELECT id, name
FROM categ
WHERE email_activated='1'
AND id IN (1, 3, 4, 5)
ORDER BY id DESC

参考:http://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html#function_in