Awesome! If I can get 2 or 3 more-experienced SOLR people to agree to assist, I can put together something really good. I like this stuff and am willing to put in the time just to see the result.
I'll contact you off the list. All - anyone else willing to volunteer to answer questions to support an effort to build a comprehensive SOLR Query tutorial? Alexandre, I'll contact you offline. On Sun, Sep 11, 2016 at 10:37 AM, Alexandre Rafalovitch <arafa...@gmail.com> wrote: > 1. There are tutorials. Actually a number of them. But none of them - > as far as I remember - go very far into the query language. They kind > of stop of basic queries. I remember the first time I realized I can > get multiple subqueries working together (for > https://gist.github.com/arafalov/5e04884e5aefaf46678c I think). There > is also _a lot_ of resources on the web, but they are not easily > discoverable. I am looking into doing something about that, but it is > not public (or even alpha) yet. > > 2. Solr Reference Guide (not wiki) is the starting point now. It is > quite comprehensive, but it is a reference guide, not a tutorial. So, > some information is still in unexpected sections (e.g. parent/child > queries, child expansion, etc). > > 3. Yes and yes. I am not promising knowing all answers, but I've been > already digging into some of this for various solr-start projects and > for my upcoming presentation. Contact me off the list and let's talk. > > Regards, > Alex. > ---- > Newsletter and resources for Solr beginners and intermediates: > http://www.solr-start.com/ > > > On 11 September 2016 at 23:24, John Bickerstaff > <j...@johnbickerstaff.com> wrote: > > All, > > > > I've found that figuring out the subtle nuances of the query language is > a > > *daunting* task for someone unfamiliar with SOLR. > > > > I'm not aware of any comprehensive documentation (in the form of a > tutorial > > or similar really useful tool) > > > > It seems the information is scattered all over the place an has to be dug > > out piecemeal... Typical for open-source projects. Yes, I've seen the > > wiki - and it's not too far from a man page. Everything that is possible > > (in theory) is contained in the api, but that is not the same thing as a > > large set of examples that *show* how to use it. > > > > So, three questions: > > > > 1. Is there somewhere that really dives into the use of the query > language > > (like a tutorial)? > > 2. Assuming not, is there a web page that at least contains a majority of > > the links to various sources to assist someone in studying? > > 3. Is there any interest in having someone do this documentation / > tutorial > > creation? > > 3a. If the answer to 3 is yes - are the committers/solr experts > > willing to volunteer to answer questions via email if I build the > tutorial? > > > > If the answer to 3 is yes and yes - I cut my teeth in the industry 20 > years > > ago as a Tech Writer and Instructional Designer. I will build and > publish > > the tutorial - but I don't have the time to dig out all the info the hard > > way - which is why I asked 3a... > > > > On Sat, Sep 10, 2016 at 11:20 AM, Erick Erickson < > erickerick...@gmail.com> > > wrote: > > > >> Background for Shawn's comments can be found here: > >> > >> https://lucidworks.com/blog/2011/12/28/why-not-and-or-and-not/ > >> > >> Solr's query language is NOT strict boolean logic as explained > >> above. Although with proper grouping (parenthesizing) and tricks > >> like Shawn mentioned it can be pretty close. > >> > >> Best, > >> Erick > >> > >> On Fri, Sep 9, 2016 at 9:17 PM, Shawn Heisey <apa...@elyograg.org> > wrote: > >> > On 9/9/2016 9:17 PM, Prasanna S. Dhakephalkar wrote: > >> >> Further search on net got me answer > >> >> > >> >> The query to be > >> >> > >> >> a_id:20 OR (*:* NOT a_id:*) > >> >> > >> >> I don't understand this syntax > >> > > >> > The basic problem here is that negative queries don't work. If you're > >> > going to subtract X, you have to start with something (like all docs), > >> > or the result is nothing. > >> > > >> > For simple queries (just a single "-field:X" clause), Solr is able to > >> > detect the unworkable situation and implicitly add a "*:*" starting > >> > point, so the query works. > >> > > >> > When the query has ANY complexity, Solr's negative query detection > isn't > >> > possible, and the query can't be fixed automatically, so it doesn't > work. > >> > > >> > Thanks, > >> > Shawn > >> > > >> >
