[mapserver-users] php Mapscript queryByAttributes

Wed Oct 11 14:37:37 PDT 2017

Regex worked as a LIKE workaround. The backend database is PostgreSQL 9.5.9.

   On Wednesday, October 11, 2017, 4:28:27 PM CDT, Lime, Steve D (MNIT) <steve.lime at state.mn.us> wrote:  

What’s the backend database – it’s possible the IN operator is screwy for that driver? For the LIKE operator I should have remembered that MapServer doesn’t support that operator, try a regex instead:

 queryByAttributes("municipio", "(‘[municipio]’ ~ 'G.*')", MS_MULTIPLE);

Steve

From: Carlos Ruiz [mailto:boolean10001 at yahoo.com]
Sent: Wednesday, October 11, 2017 4:03 PM
To: mapserver-users at lists.osgeo.org; Sven Schroeter <schroeter at netgis.de>; Lime, Steve D (MNIT) <steve.lime at state.mn.us>
Subject: Re: RE: [mapserver-users] php Mapscript queryByAttributes

Hey Steve,

> the IN operator works off a delimited list, try queryByAttributes("gid", "([gid] IN ‘100,101’)", MS_MULTIPLE);. Any whitespace > is considered part of the tokens in a list.

I have tried this and it doesn't work. There's a query error because Mapserver try to add the following:and ("gid"'100,101')

> This is close, it’s a logical expression but you’re comparing a number against a string. It should be

> queryByAttributes("municipio", "(‘[municipio]’ LIKE 'G%')", MS_MULTIPLE);

I have tried this and it doesn't work. There's a query error because Mapserver try to add the following:and ("municipio"::text'G%')

Maybe this happens because the MS4W version (3.1.3) with Mapserver CGI 7.0.1

On Wednesday, October 11, 2017, 2:31:41 PM CDT, Lime, Steve D (MNIT) <steve.lime at state.mn.us> wrote:

The query syntax is given in MapServer expression syntax. I think there’s a logical expression for why you’re seeing these results:

  queryByAttributes("gid", "gid > 100", MS_MULTIPLE) // does not found anything

is evaluated as gid = “gid > 100”. Valid but not what you’re looking for. Your last example is the right way to do it - queryByAttributes("gid", "([gid] > 100)", MS_MULTIPLE);. If MapServer sees the qstring is a logical expression then it ignores the qitem.

  queryByAttributes("gid", "100", MS_MULTIPLE) // found one result

is evaluated as gid = 100 which makes sense.

  queryByAttributes("municipio", "'GUADALAJARA'", MS_MULTIPLE) // found one result

is evaluated as municipio = GUADALAJARA which makes sense. I don’t think you need the interior quotes around GUADALAJARA though.

  queryByAttributes("municipio", "municipio LIKE 'G%'", MS_MULTIPLE) // does not found anything

like the first example this evaluates as municipio = "municipio LIKE 'G%'", not what you want. See below…

  queryByAttributes("gid", "([gid] IN (100, 101))", MS_MULTIPLE); // query error

the IN operator works off a delimited list, try queryByAttributes("gid", "([gid] IN ‘100,101’)", MS_MULTIPLE);. Any whitespace is considered part of the tokens in a list.

  queryByAttributes("municipio", "([municipio] LIKE 'G%')", MS_MULTIPLE); // query error

This is close, it’s a logical expression but you’re comparing a number against a string. It should be queryByAttributes("municipio", "(‘[municipio]’ LIKE 'G%')", MS_MULTIPLE);

Steve

From: mapserver-users [mailto:mapserver-users-bounces at lists.osgeo.org]On Behalf Of Carlos Ruiz
Sent: Wednesday, October 11, 2017 1:36 PM
To: mapserver-users at lists.osgeo.org; Sven Schroeter <schroeter at netgis.de>
Subject: Re: [mapserver-users] php Mapscript queryByAttributes

Sven,

Doing some tests, queryByAttributes does not accept LIKE nor IN, just single values or simple operators (I am using PostGIS).

queryByAttributes("gid", "gid > 100", MS_MULTIPLE) // does not found anything

queryByAttributes("gid", "100", MS_MULTIPLE) // found one result

queryByAttributes("municipio", "'GUADALAJARA'", MS_MULTIPLE) // found one result

queryByAttributes("municipio", "municipio LIKE 'G%'", MS_MULTIPLE) // does not found anything

queryByAttributes("gid", "([gid] IN (100, 101))", MS_MULTIPLE); // query error

queryByAttributes("municipio", "([municipio] LIKE 'G%')", MS_MULTIPLE); // query error

queryByAttributes("gid", "([gid] > 100)", MS_MULTIPLE); // found 25 results

MS4W version is 3.1.3

Try to solve it by using FILTER, which allows more complex expressions:

$layer->setFilter("gid IN (100, 101)");

Cheers

On Wednesday, October 11, 2017, 10:55:17 AM CDT, Sven Schroeter <schroeter at netgis.de> wrote: 

Hi,

Old Server: PHP 5.4.36 with MS 6.4.1 (MS4W)

New Server: PHP 5.6.31 with MS 7.0.6 (MS4W 3.2.2)

My Test Script:

$qfield = 'gid';

$qstring = "gid IN (1,2,3)";

@$datQuery = $query_layer->queryByAttributes($qfield,$qstring,MS_MULTIPLE);

Works fine on the old Server, on the new Server no result.

I have tried to change the query expression, i.e.:

$qstring = "('[gid]' in '1,2,3')";

No result on old server and new...

How can I get it run on MS7?

Thanks + greetings 

Sven

**************************************

NETGIS GbR

Benediktinerstr. 32a

54292 Trier

Tel.: 0651-1704731

Fax: 0651-1704733

schroeter at netgis.de

www.netgis.de

_______________________________________________

mapserver-users mailing list

mapserver-users at lists.osgeo.org

https://lists.osgeo.org/mailman/listinfo/mapserver-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/mapserver-users/attachments/20171011/ae4f9750/attachment-0001.html>