Query speed decreased dramatically, not sure why though?

[C0re]

We have a query which takes the form of

".../select?q=*&sort=evalDate+desc,score+desc&start=0&rows=10"

This query takes around 5 seconds to complete.

I changed the query to the following;

".../select?q=[* TO NOW]&sort=evalDate+desc,score+desc&start=0&rows=10"

The query now returns in around 600 milliseconds.

Can any one help with explaining why [* TO NOW] has had such a big effect?
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Handling incomplete/malformed queries

[C0re]

Queries such as: 

Cat AND

(i.e the query is malformed with no second term provided) 

Causes a ParseException. 

Of course I could parse the query for sanity before it is submitted to Solr
but I wondered if there is a good practice way of checking/dealing with
queries which are incomplete? Perhaps a library already exists to help with
this? 

Thanks. 
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Wildcard weirdness

[C0re]

Hi,

I'm trying to understand what Solr is doing when a search for O'Connor and
O'Conn* is done.

The first search returns 4 results, which is fine. I would expect the second
search to return at least 4 (the same) results, however it fails to return
any.

I've debugged the query and this is the output:

Debug for O'Connor :
surname:O'Connor
surname:O'Connor
PhraseQuery(surname:"o connor")
surname:"o connor"

Debug for O'Conn* :
surname:O'Conno*
surname:O'Conno*
surname:O'Conno*
surname:O'Conno*

So as you can see the queries are different but I don't understand why Solr
changes them the way it does?

Also, searching for Conno* does work.

Thanks,
C.

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Re: Wildcard weirdness

[C0re]

Hi Savvas,

Thanks for the reply. Yep I've been trying out the Analysis tool.

As you say the index does lowercase the terms.

Field Name: surname
Index Value: O'Connor
Query Value: connor

The Index Analyzer creates:
o   connor

Which the query value above will match on.

However, if the query value is conno* then there is no match.




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