You can use your field calculator for this. Add a new text field to your table that will be your key field. Right-click on its field name in the attribute table and choose Field Calculator...
Use [ColA] & [ColB] & [ColC] for your field calculation.
No, you cannot use versioning within a file geodatabase. As the second reference states, versioning is a capability of an Enterprise geodatabase (only a database can do the UNION ALL versioned queries).
The only participation file geodatabase can have in the versioning framework is through Geodatabase Replication, either One-way replication (parent-to-...
You are using print in one statement and arcpy.AddError() in another. The command line won't print errors from AddError() and the ArcGIS console won't print from print.
To be able to print the error both within the ArcGIS console and the command line you may want to use both print and AddError() from within your except statements:
I'd just use except Exception as e:
>>> import arcpy
arcpy.Buffer_analysis ("fdgfd", "dfgdg", "dsfsdfsd")
except Exception as e:
Failed to execute. Parameters are not valid.
ERROR 000732: Input Features: Dataset fdgfd does not exist or is not supported
Failed to execute (Buffer).
If your survey submits data to a feature class called 'Form_2' (a common default name), and the survey includes image questions (photos, signatures, etc), then...
There will be a table of related images called 'Form_2_ATTACH'. This table will have a GUID field called "REL_GLOBALID". This contains the GUID (global ID) of the survey record that the image ...
Raster data stored in File Geodatabases is currently not supported by GDAL/QGIS. There is work being done by Nyall Dawson and North Road along with members of the GDAL development community to hopefully bring this feature to light in the upcoming time.
Watch this page for news regarding the development of the raster driver:
This script will work in QGIS 3. It iterates over all layers in the project and replaces chosen text in their name. Simply paste this inside the QGIS Python Console. (I am not sure about adding import OS in the beginning)
layerList = QgsProject.instance().layerTreeRoot().findLayers()
for layer in layerList:
basename = layer.name()