Feature Requests item #3472020, was opened at 2012-01-10 14:06
Message generated for change (Comment added) made by michaudm
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Category: File/Data IO
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: michael michaud (michaudm)
>Assigned to: michael michaud (michaudm)
Summary: Saving long attribute name into shapefile
Initial Comment:
Mail from Jukka related to bug id 3472008 :
What might happen when user is saving into shapefile a dataset with attributes
like "long_attribute_name_01" and "long_attribute_name_02"? Truncating names
to suit the .dbf format would yield to identical names. This is how GDAL
behaves:
Attribute names can only be up to 10 characters long. Longer names will be
silently truncated. This may result in non-unique column names, which will
definitely cause problems later.
Starting with version 1.7, the OGR Shapefile driver tries to generate unique
field names. Successive duplicate field names, including those created by
truncation to 10 characters, will be truncated to 8 characters and appended
with a serial number from 1 to 99.
For example:
a → a, a → a_1, A → A_2;
abcdefghijk → abcdefghij, abcdefghijkl → abcdefgh_1
Taken from http://gdal.org/ogr/drv_shapefile.html
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>Comment By: michael michaud (michaudm)
Date: 2012-04-19 07:28
Message:
Feature added in r2777 (2012-03-24)
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