Johan,<br><br>You are having success looking for records that match a pattern starting with 'LADE' - similar to using 'LIKE' - but are getting stuck looking for records matching a pattern that doesn't start with 'LADE'.<br>
<br>Try an approach along the lines of NOT LIKE.<br><br>Steve<br><br><br><br><div class="gmail_quote">On 23 July 2010 15:20, Johan Forsman <span dir="ltr"><<a href="mailto:Johan.Forsman@la.gov">Johan.Forsman@la.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">All:<br>
<br>
Regex neophyte, using MS 5.4.2 in FGS on Ubuntu Server 9.10, I wish to render two classes based on content in a PostGIS field.<br>
<br>
For the first CLASS I want all records that start with "LADE", and using<br>
<br>
NAME "LADE"<br>
EXPRESSION /^LADE.*/<br>
<br>
appears to return the expected records.<br>
<br>
However, for the second CLASS I want all records that DO NOT start with "LADE", but using<br>
<br>
NAME "Other"<br>
EXPRESSION /^(?!LADE).*/<br>
<br>
does not return any records and the log contains<br>
<br>
msEvalExpression() error: Regular expression error. Invalid regular expression.<br>
<br>
Examples out in the ether all indicate that this "negative lookahead" is supposed to do exactly what I want.<br>
<br>
What am I doing wrong in this instance?<br>
<br>
Thanks!<br>
/Johan.<br>
<br>
----------------------<br>
Johan Forsman<br>
Geologist<br>
Safe Drinking Water Program<br>
Louisiana Department of Health and Hospitals<br>
Office of Public Health<br>
Telephone: 225.342.7309<br>
Telefax: 225.342.7303<br>
<br>
<br>
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