I noticed some problems with encoding BIT and GEOMETRY types on the binary protocol.

For the query:

    SELECT ?

With `B'101'` encoded as `MYSQL_TYPE_BIT` (`0x10`) the execute statement's hexdump is:

    0000   10 00 00 00 17 13 00 00 00 00 01 00 00 00 00 01

    0010   10 00 01 05

But I'm getting a NULL value back in the response:

However, if I encode bit as `MYSQL_TYPE_VAR_STRING` (`0xFD`):

    0000   10 00 00 00 17 04 00 00 00 00 01 00 00 00 00 01

    0010   fd 00 01 05

I'm getting the expected result.

I observed the same behaviour for `MYSQL_TYPE_GEOMETRY`.