[mapserver-users] How can I do a SQL text comparison in a mapfile?

[Bob Basques]

Robert,

I think the problem is related to a DATA (SQL/DB call-here) call, not at the EXPRESSION or FILTER level which I believe were added fairly recently.

bobb



>>> "Robert Sanson" <SansonR at asurequality.com> 02/12/09 2:13 PM >>>
I don't have a problem with an internal quote in my map file using ms4w with Mapserver 5.2:

 

FILTER "WHERE LEGAL_DESC LIKE '%%legal%%'"

 

The double %% allow me to use wildcard searching.

 

Robert Sanson



  

>>> "Bob Basques" <Bob.Basques at ci.stpaul.mn.us> 13/02/2009 8:56 a.m. >>>

This was just talked about this past week in another thread.



I don't believe there is a method for escaping the internal quotes in the SQL statement you show.  Possible option(s) would be to add a numeric column to the DB table/view for filtering on.  Or make a call that returns more using a different SQL filter and use EXPRESSIONs in the Layer CLASS to filter further for display.  This doesn't seem like the economical way to do things things though.



There was some stuff done in recent versions of MapServer though in EXPRESSIONs that may be related.



bobb











>>> Travis Kirstine <traviskirstine at gmail.com> 02/12/09 1:45 PM >>>

The following line does not work and I think it has something to do

with the single quotes.  When I use double quotes Postgres thinks I'm

referring to a column name.  Is there a way to escape the single

quotes?

DATA "geom from (select id as oid, geom from some_table where

some_field = 'some_string') as myquery using SRID=-1"



The following line works because I'm doing a numeric comparison.

DATA "geom from (select id as oid, geom from some_table where

some_field_number = 99) as myquery using SRID=-1"





-- 

Travis K.



Toronto, Canada

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