Python Beginner - Using version 10.1 and not an SDE install I have an atribute table with firehydrant inspection data. I am trying to create a layer that will only show the records grouped by fire hydrant number and then only display the most recent inspection date. When I execute the following code it runs fine and does in fact create the layer but it doesn't select the Max Date. If I have a record for Hydrant 100 with two dates I only want the most recent date to be created within the new layer.Appreciate any assistance on this.import arcpy
from arcpy import env
env.workspace=r"Z:\GIS_Data\gdb\GIS_Test.gdb"
fc="COA_FH_Inspections"
cursor = arcpy.UpdateCursor(fc)
idlist = []
datelist = []
for row in cursor:
idlist.append(row.getValue('HydrID'))
datelist.append(row.getValue('TestDate'))
cursor.updateRow(row)
print idlist
print datelist
idunique = set(idlist)
#Make a layer from the feature class
arcpy.MakeFeatureLayer_management(fc, "lyr")
for i in idunique:
if i == idlist:
arcpy.SelectLayerByAttribute_management("lyr", "New_Selection", '"HydrID" = i')
arcpy.SelectLayerByAttribute_management("lyr", "subset_Selection",'"TestDate" = (Select Max("TestDate") from "lyr"')Again thank you - Terry
