explain

# File activerecord/lib/active_record/connection_adapters/sqlite3/database_statements.rb, line 18
        def explain(arel, binds = [], _options = [])
          sql    = "EXPLAIN QUERY PLAN " + to_sql(arel, binds)
          result = internal_exec_query(sql, "EXPLAIN", [])
          SQLite3::ExplainPrettyPrinter.new.pp(result)
        end