如何在mysqli_query中有多个WHERE值？

Question

我如何在mysqli_query的WHERE中使用多个值？

离。

mysqli_query ($con, "SELECT post_title, post_content, post_date FROM posts WHERE post_id = 3013, 4140, 6850")

这是使用多个WHERE值的正确方法吗？或...？

Answer 1

使用IN

WHERE post_id IN (3013, 4140, 6850)

与

相同

WHERE post_id = 3013 OR
      post_id = 4140 OR
      post_id = 6850

Answer 2

您需要使用IN子句。

mysqli_query ($con, "SELECT post_title, post_content, post_date FROM posts WHERE post_id IN (3013, 4140, 6850)")

Answer 3

使用IN：

mysqli_query ($con, "SELECT post_title, post_content, post_date FROM posts WHERE post_id IN (3013, 4140, 6850)")

Answer 4

首先，您应该查看文档：

select syntax

您将where子句与AND或OR

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