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Merge pull request #23299 from CollinGraves/patch-1

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English explanation to multi-level nested join
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प्रथमेश Sonpatki 2016-01-28 10:00:52 +05:30
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guides/source/active_record_querying.md
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@ -1085,6 +1085,8 @@ SELECT categories.* FROM categories
INNER JOIN tags ON tags.article_id = articles.id
```
Or, in English: "return all categories that have articles, where those articles have a comment made by a guest, and where those articles also have a tag."
#### Specifying Conditions on the Joined Tables
You can specify conditions on the joined tables using the regular [Array](#array-conditions) and [String](#pure-string-conditions) conditions. [Hash conditions](#hash-conditions) provide a special syntax for specifying conditions for the joined tables: