[maplab-users] About the join object

Mon, 24 Feb 2003 12:06:47 +0800

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Hi~
Dear All

Is there any one so kind give me the ideas about how to use the join =
object.
I've explore the mapfile reference. I still can't understand what it =
exactlly.
I've add one under one of my Class object. I saw the name variable in =
join object.
The reference said "Unique name for this join, and it's required". And =
how does "From" and=20
"To" mean? Besides, I need a template html file to show the queries =
result, would u please=20
show me some examples?Thanx!
Here is part of my mapfile about join object.=20
     JOIN
        NAME "Buildings"------is this user defined?
        TYPE MULTIPLE
        TABLE "c:/msapps/nctu/data/buildingauth.dbf"
        FROM "AREA"-----is this one attribute of my table?
        TO "NAME"------is this one attribute of my table too?
      END

In spite of the cofig up, is there anything else needed to set for me to =
query my own map?

Any ideas?

Best regards!!!!

Kent

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<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Dbig5"><BASE=20
href=3D"file://C:\Program Files\Common Files\Microsoft =
Shared\Stationery\">
<META content=3D"MSHTML 5.50.4807.2300" name=3DGENERATOR></HEAD>
<BODY=20
style=3D"BACKGROUND-POSITION: center top; FONT-WEIGHT: normal; =
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<DIV>Hi~</DIV>
<DIV><SPAN id=3Dhotbar_element_used =
stationery_tag_mark>Dear=20
All</SPAN></DIV>
<DIV><SPAN stationery_tag_mark></SPAN>&nbsp;</DIV>
<DIV><SPAN stationery_tag_mark>Is there any one so kind&nbsp;give me the =
ideas=20
about how to use the join object.</SPAN></DIV>
<DIV><SPAN stationery_tag_mark>I've explore the mapfile reference. I =
still can't=20
understand what it exactlly.</SPAN></DIV>
<DIV><SPAN stationery_tag_mark>I've add one under one of my Class =
object. I saw=20
the name variable in join object.</SPAN></DIV>
<DIV><SPAN stationery_tag_mark>The reference said "Unique name for this =
join,=20
and it's required". And how does "From" and </SPAN></DIV>
<DIV><SPAN stationery_tag_mark>"To" mean? Besides, I need a template =
html file=20
to show the&nbsp;queries result,&nbsp;would u please&nbsp;</SPAN></DIV>
<DIV><SPAN stationery_tag_mark>show me some examples?Thanx!</SPAN></DIV>
<DIV><SPAN stationery_tag_mark>Here is part of my&nbsp;mapfile about =
join=20
object.&nbsp;</SPAN></DIV>
<DIV><SPAN stationery_tag_mark>&nbsp;&nbsp;&nbsp;&nbsp;=20
JOIN<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; NAME =
"Buildings"------is this=20
user defined?<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TYPE=20
MULTIPLE<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TABLE=20
"c:/msapps/nctu/data/buildingauth.dbf"<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;=20
FROM "AREA"-----is this one attribute of my=20
table?<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TO "NAME"------is =
this one=20
attribute of my table too?<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
END</SPAN></DIV>
<DIV><SPAN stationery_tag_mark></SPAN>&nbsp;</DIV>
<DIV><SPAN stationery_tag_mark>In spite of the cofig up, is there =
anything else=20
needed to set for me to query my own map?</SPAN></DIV>
<DIV><SPAN stationery_tag_mark></SPAN>&nbsp;</DIV>
<DIV><SPAN stationery_tag_mark>Any ideas?</SPAN></DIV>
<DIV><SPAN stationery_tag_mark></SPAN>&nbsp;</DIV>
<DIV><SPAN stationery_tag_mark>Best regards!!!!</SPAN></DIV>
<DIV><SPAN stationery_tag_mark></SPAN>&nbsp;</DIV>
<DIV><SPAN stationery_tag_mark>Kent</SPAN></DIV>
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