Joining Data with duplicate records....

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3
08-05-2011 08:59 AM
BrianKeller__GISP
New Contributor III
Im attempting to join a list of addresses from our local police department with an address point layer. The excel spreadsheet given to me, has an address field, and a description field. There are several locations where multiple incidents have occurred, my problem occurs when I try to join the two tables based on the addresses. Arcmap will only join the first matching record, then drop any subsequent duplicates. Is there another way to go about doing this so I can represent those locations that have had multiple incidents?

Thanks,

-Brian
ArcEditor 10
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3 Replies
DanPatterson_Retired
MVP Esteemed Contributor
A "many-to-one" is called a relate in Arc-parlance...check the help files
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//005s0000002n000000.htm
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BrianKeller__GISP
New Contributor III
A "many-to-one" is called a relate in Arc-parlance...check the help files
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//005s0000002n000000.htm


Thanks!

Is there no way to create symbology based on the attributes of the related table?
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DaleHoneycutt
Regular Contributor
Whenever I've got a 1:M, M:1, or M:M join situation, I end up using the Make Query Table tool. It creates a new table (or feature class, if you include the shape field in your output).  It's a very powerful tool, but overwhelming at first, so experiment on a small subset of your records and paw through the output to make sure you're getting exactly what you want (I almost always do this, and I'm supposed to know this stuff.)
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