gdb pgsql skip dropped fields

database/gdb/gdb_driver_pgsql.go

@@ -158,7 +158,7 @@ FROM pg_attribute a
          left join pg_description b ON a.attrelid=b.objoid AND a.attnum = b.objsubid
          left join  pg_type t ON  a.atttypid = t.oid
          left join information_schema.columns ic on ic.column_name = a.attname and ic.table_name = c.relname
-WHERE c.relname = '%s' and a.attnum > 0
+WHERE c.relname = '%s' and a.attisdropped is false and a.attnum > 0
 ORDER BY a.attnum`,
 					strings.ToLower(table),
 				)