[Mapserver-users] DBF Joins

Steve Lime steve.lime@dnr.state.mn.us
Thu, 23 Jan 2003 19:20:22 -0600


Joins are close but not yet working in 3.7. The plan at the moment is to
bring join support
back to where it was pre-3.5. That means joins will only work with
query results. Without
some indexing of xbase files, which I don't have time to add, realtime
joins for use with
expressions is simply not practical with datasets of even minimal size.
If someone would
like to take that on, particularly adding b-tree indexes to a .dbf file
then it can be revisited.

Joins for query support should, with no sick kids at home, happen in
the next couple of days.

Steve

Stephen Lime
Data & Applications Manager

Minnesota DNR
500 Lafayette Road
St. Paul, MN 55155
651-297-2937

>>> "John McCue" <jmccue@geovue.com> 01/23/03 08:35AM >>>
Hi
I need to use DBF table joins in MapServer v.3.7.  I just updated my
code
with the latest from CVS and I have found the msJoinDBFTables function
in
mapquery.c, but I don't see where this function is ever called
anywhere.

	- Have joins been activated in the latest code?
		Any information about how they work would
		be helpful.

Thanks!



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