== Abstract Syntax Tree ==
LogicalProject(a=[$0], country=[$1])
+- LogicalTableScan(table=[[default_catalog, default_database, fs_t]])

== Optimized Physical Plan ==
TableSourceScan(table=[[default_catalog, default_database, fs_t, project=[a, country], metadata=[]]], fields=[a, country])

== Optimized Execution Plan ==
TableSourceScan(table=[[default_catalog, default_database, fs_t, project=[a, country], metadata=[]]], fields=[a, country])
