Question

我想在mysql数据库中找到并重命名，我这样命令：

UPDATE wp_postmeta 
SET meta_id = REPLACE(meta_id, "-SITE-", "-SITE-.mkv"), 
    post_id = REPLACE(post_id, "-SITE-", "-SITE-.mkv"), 
    meta_key = REPLACE(meta_key, "-SITE-", "-SITE-.mkv"), 
    meta_value = REPLACE(meta_value, "-SITE-", "-SITE-.mkv")

我需要将所有" -SITE- "重命名为" -SITE-.mkv "，只需将.mkv扩展名添加到" -SITE- "，但此处存在问题。

在执行此操作之前，我们的表中还有另一个"-SITE-.mkv"。如果我想搜索-SITE-，此命令会将旧参数重命名为-SITE-.mkv.mkv。

如何在END处找到并重命名只有.mkv的参数？

我只需要在没有-SITE-的情况下找到.mkv并在结尾添加.mkv。

任何人都可以帮助我？

谢谢

Answer 1

您只需要包含WHERE子句，并可以选择将其与NOT LIKE '%value%结合使用。百分号是外卡，并且因为您只对以.mkv结尾的列感兴趣，所以您只需要第一个在.mkv之前包含任何内容。

为了使它更清晰，我将您的查询分成四个语句。

UPDATE wp_postmeta SET meta_id = REPLACE(meta_id, "-SITE-", "-SITE-.mkv") WHERE meta_id NOT LIKE '%.mkv';
UPDATE wp_postmeta SET post_id = REPLACE(post_id, "-SITE-", "-SITE-.mkv") WHERE post_id NOT LIKE '%.mkv';
UPDATE wp_postmeta SET meta_key = REPLACE(meta_key, "-SITE-", "-SITE-.mkv") WHERE meta_key NOT LIKE '%.mkv';
UPDATE wp_postmeta SET meta_value = REPLACE(meta_value, "-SITE-", "-SITE-.mkv") WHERE meta_value NOT LIKE '%.mkv';

Answer 2

您可以将查询分解为多个查询

UPDATE wp_postmeta SET meta_id = REPLACE(meta_id, "-SITE-", "-SITE-.mkv") WHERE meta_id ='-SITE-';
UPDATE wp_postmeta SET post_id = REPLACE(post_id, "-SITE-", "-SITE-.mkv") WHERE post_id ='-SITE-';
UPDATE wp_postmeta SET meta_key = REPLACE(meta_key, "-SITE-", "-SITE-.mkv") WHERE meta_key ='-SITE-';
UPDATE wp_postmeta SET meta_value = REPLACE(meta_value, "-SITE-", "-SITE-.mkv") WHERE meta_value ='-SITE-';

Mysql重命名仅限Urls结尾

2 个答案: