Question

我正在尝试从名为“blog”的表中选择具有正确部门ID的行。 department_id字段看起来像'1,4,5'。现在，如果站点编号1,4或5查询他们应该获得该帖子，因为他们的号码在该字段中。但我遇到了麻烦。这是我的代码，所以非常感谢任何帮助。

SELECT * FROM news WHERE draft = '1' AND department_id IN ($id) ORDER BY id DESC

Answer 1

表名为blog或news？

让我们说$id=3;

SELECT * FROM news WHERE draft = 1 AND $id IN (department_id) ORDER BY id DESC

或者您也可以使用

SELECT * FROM news WHERE draft = 1 AND find_in_set('$id', cast(department_id as char)) > 0 ORDER BY id DESC

Answer 2

这不会很好地扩展，但您可以尝试：

SELECT * 
FROM news 
WHERE draft = '1' AND 
      (department_id = 1
      OR department_id = 4
      OR department_id = 5)
ORDER BY department_id DESC;

Answer 3

什么是$ id？如果$ id是数组，则需要make string例如

$id = array(1,4,5);
$ids = implode(',', $id);
mysql_query("SELECT * FROM news WHERE draft = '1' AND department_id IN ($ids) ORDER BY id DESC");

如果包含数字，则选择SELECT行 - SQL

3 个答案: