更新特定列等于其他表

Question

I have 2 tables, which one of them is appen to other. I'm using opencart, and need to update title to all products from specific category.

Example: oc_product_description

product_id
language_id
name

1
3
T-backs model 887 Róża

2
3
T-backs model 912 Róża

3
3
Push up model 3173 Róża

oc_product_to_category

category_id
product_id

1
1

2
1

3
1

And I can't imagine what query I should use..

UPDATE oc_product_description
SET name = REPLACE(name, 'T-backs model', 'BACK')
WHERE product_id = SELECT product_id FROM oc_product_to_category WHERE category_id = 54;

Answer 1

UPDATE oc_product_description SET name = REPLACE(name, 'T-backs model', 'BACK') WHERE product_id IN ( SELECT product_id FROM oc_product_to_category WHERE category_id = 54 );

This will help you.

Answer 2

If you have more then a product_id you should use where product_id in and not where product_id =

UPDATE oc_product_description
SET name = REPLACE(name, 'T-backs model', 'BACK') 
WHERE product_id in ( SELECT product_id 
            FROM oc_product_to_category WHERE category_id = 54);