how do I create a “like” filter view in couchdb

Question

Here\'s an example of what I need in sql:

SELECT name FROM employ WHERE name LIKE %bro%

How do I create view li

Answer 1

Unfortunately, doing searches using LIKE %...% aren't really how CouchDB Views work, but you can accomplish a great deal of search capability by installing couchdb-lucene, it's a fulltext search engine that creates indexes on your database that you can do more sophisticated searches with.

The typical way to "search" a database for a given key, without any 3rd party tools, is to create a view that emits the value you are looking for as the key. In your example:

function (doc) {
    emit(doc.name, doc);
}

This outputs a list of all the names in your database.

Now, you would "search" based on the first letters of your key. For example, if you are searching for names that start with "bro".

/db/_design/test/_view/names?startkey="bro"&endkey="brp"

Notice I took the last letter of the search parameter, and "incremented" the last letter in it. Again, if you want to perform searches, rather than aggregating statistics, you should use a fulltext search engine like lucene. (see above)