I know how it feels when waiting for somebodies support to handle an API bug while your application is going to not met deadlines defined. The issue you described really sound like a bug, so for “clean” solution you will have to wait until Google Sites team guys will resolve this bug (I already upvoted … Read more
Abuse of notation or not, polylog(n) does mean “some polynomial in log(n)”, just as “poly(n)” can mean “some polynomial in n”. So O(polylog(n)) means “O((log n)k) for some k”. (See Wikipedia: Polylogarithmic, or, to see it in context, Prof. Scott Aaronson’s blog: My Favorite Growth Rates.) The point is that just as we often don’t … Read more
Edit, 2016 — Why not both? If you’re interested in Postgres vs. Lucene, why not both? Check out the ZomboDB extension for Postgres, which integrates Elasticsearch as a first-class index type. Still a fairly early project but it looks really promising to me. https://github.com/zombodb/zombodb (Technically not available on Heroku, but still worth looking at.) Disclosure: I’m … Read more
Short answer: it depends on your use case, but you probably don’t want to use it as a primary store. Longer answer: You should really understand all of the possible issues that can come up around resiliency and data loss. Elastic has some great documentation of these issues which you should really understand before using … Read more
IntelliJ is project based so you can only search within the open project using Ctrl + Shift + F(Windows) or Cmd + Shift + F(Mac). When I need to search across a set of projects I use Agent Ransack
A multivalued field is useful when there are more than one value present for the field. An easy example would be tags, there can be multiple tags that need to be indexed. so if we have tags field as multivalued then solr response will return a list instead of a string value. One point to … Read more
Yes. However you have to create SQL server function first and call that as by default LINQ will use a like. This blog post which will explain the detail but this is the extract: To get it working you need to create a table valued function that does nothing more than a CONTAINSTABLE query based … Read more
I don’t think I could explain it better than the manual already does: In choosing which index type to use, GiST or GIN, consider these performance differences: GIN index lookups are about three times faster than GiST GIN indexes take about three times longer to build than GiST GIN indexes are moderately slower to update … Read more
This might give the increased relevance to the head part that you want. It won’t double it, but it might possibly good enough for your sake: SELECT pages.*, MATCH (head, body) AGAINST (‘some words’) AS relevance, MATCH (head) AGAINST (‘some words’) AS title_relevance FROM pages WHERE MATCH (head, body) AGAINST (‘some words’) ORDER BY title_relevance … Read more
You can use REGEXP and the [[:<:]] and [[:>:]] word-boundary markers: SELECT * FROM table WHERE keywords REGEXP ‘[[:<:]]rid[[:>:]]’ Update for 2020: (actually 2018+) MySQL updated its RegExp-Engine in version 8.0.4, so you will now need to use the “standard” word boundary marker \b: SELECT * FROM table WHERE keywords REGEXP ‘\\brid\\b’ Also be aware … Read more