[QGIS-trac] Re: [Quantum GIS] #3124: Add 'Apply' button to the layer's query function

[Quantum GIS]

#3124: Add 'Apply' button to the layer's query function
-------------------------------------+--------------------------------------
        Reporter:  jrm               |         Owner:  nobody       
            Type:  enhancement       |        Status:  closed       
        Priority:  minor: annoyance  |     Milestone:  Version 1.6.0
       Component:  GUI               |       Version:               
      Resolution:  fixed             |      Keywords:               
Platform_version:                    |      Platform:  All          
        Must_fix:  No                |   Status_info:  0            
-------------------------------------+--------------------------------------
Changes (by jef):

  * status:  reopened => closed
  * resolution:  => fixed


Comment:

 Replying to [comment:2 jrm]:
 > sorry I've not been clear, the problem is that if you want to extend
 your query beyond an existing queried subset, you have to
 open/close/open/close the window.

 Sorry, I wasn't able to reproduce that problem.  The only problem there
 was, was that the sample button used the original query, so to see values
 that were excluded by the earlier query, you needed to clear, close and
 reopen.  Now it's works on the last successfully tested query, so you can
 "test" and retrieve the values of the current query.

 Other than that the query isn't incremental.  The subset string is fully
 replaced, with the one you enter.

 > ex for a table with 3 names george/bill/bob :
 > 1. query "name" = 'george'
 > 2. query "name" = 'george' OR "name" = 'bill', it will return a message
 saying that there no feature 'bill' because the subset created by the
 first query left them out

 Huh?  that doesn't make any sense.  The subset string either gets you
 results or it doesn't.  It most certainly wouldn't complain about false
 operands of {{{OR}}}, even if the query was incremental.

 If it was somehow related to the previous query, you still just wouldn't
 see Bills, but that's not the case.  If you query for Georges, you get
 Georges.  If you query for Bills, you get Bills.  If you query for Bills
 {{{or}}} Georges, you get Bills and Georges.  If you query for Bills
 {{{and}}} Georges, you get nothing.  The order of queries doesn't matter
 and you don't need to clear the query in between.

 BTW just to be sure I created a point shapes with Bills and Georges and
 verified the above.

-- 
Ticket URL: <http://trac.osgeo.org/qgis/ticket/3124#comment:3>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats