Question

I have this SELECT statement:

SELECT * FROM `all_uu_features`

INNER JOIN `all_video_names`
ON `all_video_names`.`video_id` = `all_uu_features`.`video_id`

WHERE `language` = 'en'
  AND `navigation` = 'laser-interface'

I need to reverse this and UPDATE the database. How do I do that? Is there a better way than:

UPDATE `all_uu_features` SET ...
WHERE `language` = 'en'
  AND `navigation` = 'laser-interface' 

and

UPDATE `all_video_names' SET ...
WHERE video_id = ?

Can this be done with one statement?

all_video_names:

video_id | video_name
-------------------
1        |  ABC
2        |  DEF
3   ....

all_uu_features:

feature_name | video_id |  language | navigation
-----------------------------------------------
Hello 1      |  1       |   en      | laser-interface
Hello 2      |  2       |   fr      | laser-interface  

Answer 1

There is a multi-table update syntax in MySQL. You can actually find an example in the docs of almost exactly what you’re trying to do.

-- docs example
UPDATE TABLE_1 LEFT JOIN TABLE_2 ON TABLE_1.COLUMN_1= TABLE_2.COLUMN_2 
SET TABLE_1.COLUMN = EXPR WHERE TABLE_2.COLUMN2 IS NULL

In your case, it would be:

UPDATE
`all_uu_features` uu    
INNER JOIN `all_video_names` vid
ON uu.`video_id` = vid.`video_id`
SET uu.column_name = 1, vid.column_name = 2
WHERE `language` = 'en'
  AND `navigation` = 'laser-interface';