I am learning how to use ArcGIS and I am unsure how to assign appropriate buffer distance to each lake size classes for a homework assignment, please see the picture below. The goal is to place specific values in the newly created field that assign Buffdist to Size_Cls.
1= 50 2= 150 3= 500
I get to opening the Select by Attribute table, but any input I try gives:
An invalid SQL was used.
Does anyone have any suggestions or any place to redirect me to find how to solve my problem?