Question

I’m working on something similiar to GlotPress.

I have two tables

strings

• hash (primary key)
• original (text)
• project (foreign key)

translations

• hash
• string (foreign key)
• translation (text)
• language (ex.: en, fr, es)

What I want:

print every string including its translation in case it exists for a single project and language.
Example: I want every french translations + non-translated strings of a project.

This is what I have / I tried with:

SELECT * FROM strings 
LEFT JOIN translations ON strings.hash = translations.string 
WHERE strings.project = 'kg6k34j6'
AND language = 'fr'
OR language = NULL

Here’s the problem: I cannot use the OR here, because all strings from every project will be shown.

Answer 1

SELECT * FROM strings 
LEFT JOIN translations ON strings.hash = translations.string AND language = 'fr'
WHERE strings.project = 'kg6k34j6'