explain extended select id,k from sbtest where id=2\G
explain extended select id,k from sbtest where id=6\G
explain extended select id,k from sbtest where id between 2 and 1000\G
explain extended select id,k from sbtest where id between 6 and 1000\G
explain extended select id,k from sbtest where id>2 and id<1000\G
explain extended select id,k from sbtest where id>6 and id<1000\G
