FAQ: Can the field length in an attribute table be modified?
【相关信息】
Article ID: 42741
Software:
ArcGIS - ArcEditor 10
ArcGIS - ArcInfo 10
ArcGIS - ArcView 10
ArcGIS for Desktop Advanced 10.1, 10.2, 10.2.1, 10.2.2
ArcGIS for Desktop Standard 10.1, 10.2, 10.2.1, 10.2.2
ArcGIS for Desktop Basic 10.1, 10.2, 10.2.1, 10.2.2
Platforms: N/A
【问题描述】
Can the field length in an attribute table be modified?
Article ID: 42741
Software:
ArcGIS - ArcEditor 10
ArcGIS - ArcInfo 10
ArcGIS - ArcView 10
ArcGIS for Desktop Advanced 10.1, 10.2, 10.2.1, 10.2.2
ArcGIS for Desktop Standard 10.1, 10.2, 10.2.1, 10.2.2
ArcGIS for Desktop Basic 10.1, 10.2, 10.2.1, 10.2.2
Platforms: N/A
【问题描述】
Can the field length in an attribute table be modified?
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No. Once the length of a text field has been defined, it cannot be changed. However, users can create a new field of type 'text' with a maximum length of 255 characters, and the properties of this new field can be changed to mirror the properties of the original field using the Field Calculator.
In an attribute table, each field has properties that describe its contents and how the attributes are shown in ArcMap, and these properties are set when the table or feature class is created. Some field properties can be amended after the table or feature class is created. ArcGIS system properties are listed under the Field Details section, which includes the length of the field, and this value cannot be changed. The default length of a text type field is 50 characters and the field name cannot be longer than 255 characters.
For further information on how to create a text field with an increased character length, please refer to
KB article 42783.
【创建及修改时间】
Created: 6/12/2014
Last Modified: 6/25/2014
【原文链接】
http://support.esri.com/en/kno ... 42741
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