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Asked: 2026-05-11T04:59:27+00:00

Since SQLite does not support RIGHT OUTER JOINS I pose the following challenge (read:

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Since SQLite does not support RIGHT OUTER JOINS I pose the following challenge (read: invitation to do my work for me):

Refactor this query so it no longer utilises SQLite-unsupported constructs like RIGHT/FULL OUTER JOINs.

SELECT     strings.*, translations.text FROM         translations INNER JOIN                       language ON translations.language_id = language.id RIGHT OUTER JOIN                       strings ON translations.string_id = strings.id WHERE     (language.handle = 'english')

I sense it can be achieved with subqueries or by pivoting the tables and performing a LEFT OUTER JOIN but my attempts have failed; my SQL’s not what it used to be.

Here’s a query builder outline showing the applicable schema: http://dl.getdropbox.com/u/264612/sql-refactor.PNG

First to crack it gets an e-hug from dekz

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1 Answer

  1. The following is untested.

    select strings.*, translations.text from strings left outer join translations      on translations.string_id = strings.id            and translations.language_id = (select id                                            from language                                            where language.handle = 'english')

    I think this will give you all strings with the matching translation text where a suitable translation exists in English. Is that what you are trying to get?

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