MySQL Функция ЗАМЕНА не работает, когда текст становится длинным

Question

У меня есть таблица (фактически сгенерированная WordPress) . Я хочу заменить некоторый текст с помощью функции REPLACE, но он не работает.

Текст в поле:

<!-- wp:blocks/amazon-product {"url":"https://www.amazon.com/OutdoorMaster-OTG-Ski-Goggles-Protection/dp/B01HLV5HR6","category":"1","headline":"OutdoorMaster OTG Ski Goggles - Over Glasses Ski/Snowboard Goggles for Men, Women \u0026 Youth - 100% UV Protection (Black Frame + VLT 10% Grey Lens with REVO Silver)","price":"$17.99","review":"",","checkPrice":"Buy Now on Amazon","isUrlPresent":true,"cacheDate":"2020-04-05T07:27:27.875Z"} /-->

И этот текст точно скопирован из поля я попытался сделать это:

UPDATE wp_posts
  SET post_content =
  REPLACE(
    post_content,
    'the above text',
    'some new text'
  )
  WHERE ID = 1;

и ни одна строка не затронута, но когда я уменьшу текст, скажем, что я делаю только для <!-- wp:blocks/amazon-product {"url":"https://www.amazon.com/OutdoorMaster-OTG-Ski-Goggles-Protection/dp/B01HLV5HR6", текст заменяется.

Answer 1

Как видите

Set @a = 'a<!-- wp:blocks/amazon-product {"url":"https://www.amazon.com/OutdoorMaster-OTG-Ski-Goggles-Protection/dp/B01HLV5HR6","category":"1","headline":"OutdoorMaster OTG Ski Goggles - Over Glasses Ski/Snowboard Goggles for Men, Women \u0026 Youth - 100% UV Protection (Black Frame + VLT 10% Grey Lens with REVO Silver)","price":"$17.99","review":"",","checkPrice":"Buy Now on Amazon","isUrlPresent":true,"cacheDate":"2020-04-05T07:27:27.875Z"} /-->"a'

✓

SELECT REPLACE (@a,'<!-- wp:blocks/amazon-product {"url":"https://www.amazon.com/OutdoorMaster-OTG-Ski-Goggles-Protection/dp/B01HLV5HR6","category":"1","headline":"OutdoorMaster OTG Ski Goggles - Over Glasses Ski/Snowboard Goggles for Men, Women \u0026 Youth - 100% UV Protection (Black Frame + VLT 10% Grey Lens with REVO Silver)","price":"$17.99","review":"",","checkPrice":"Buy Now on Amazon","isUrlPresent":true,"cacheDate":"2020-04-05T07:27:27.875Z"} /-->','test')

| REPLACE (@a,'<!-- wp:blocks/amazon-product {"url":"https://www.amazon.com/OutdoorMaster-OTG-Ski-Goggles-Protection/dp/B01HLV5HR6","category":"1","headline":"OutdoorMaster OTG Ski Goggles - Over Glasses Ski/Snowboard Goggles for Men, Women \u0026 Youth - 1 |
| :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| atest"a                                                                                                                                                                                                                                                         |

дБ <> скрипка здесь

Проблема не в размере вашего текста.

Сначала вы должны попробовать

SELECT post_content FROM wp_posts WHERE post_content LIKE '%your text%';

И посмотрите, есть ли какой-либо результат.