[mapserver-users] php Mapscript queryByAttributes

[Lime, Steve D (MNIT)]

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<mailto: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



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