diff --git a/sqlx-core/src/mysql/connection.rs b/sqlx-core/src/mysql/connection.rs
index d9dcb4da..24dc3c4f 100644
--- a/sqlx-core/src/mysql/connection.rs
+++ b/sqlx-core/src/mysql/connection.rs
@@ -8,7 +8,7 @@ use sha1::Sha1;
 use crate::connection::{Connect, Connection};
 use crate::executor::Executor;
 use crate::mysql::protocol::{
-    AuthPlugin, AuthSwitch, Capabilities, ComPing, Decode, Handshake, HandshakeResponse,
+    AuthPlugin, AuthSwitch, Capabilities, ComPing, Handshake, HandshakeResponse,
 };
 use crate::mysql::stream::MySqlStream;
 use crate::mysql::util::xor_eq;
@@ -149,7 +149,7 @@ async fn establish(stream: &mut MySqlStream, url: &Url) -> crate::Result<()> {
     // Read a [Handshake] packet. When connecting to the database server, this is immediately
     // received from the database server.
 
-    let handshake = Handshake::decode(stream.receive().await?)?;
+    let handshake = Handshake::read(stream.receive().await?)?;
     let mut auth_plugin = handshake.auth_plugin;
     let mut auth_plugin_data = handshake.auth_plugin_data;
 
@@ -202,7 +202,7 @@ async fn establish(stream: &mut MySqlStream, url: &Url) -> crate::Result<()> {
 
             // AUTH_SWITCH
             0xFE => {
-                let auth = AuthSwitch::decode(packet)?;
+                let auth = AuthSwitch::read(packet)?;
                 auth_plugin = auth.auth_plugin;
                 auth_plugin_data = auth.auth_plugin_data;
 
diff --git a/sqlx-core/src/mysql/cursor.rs b/sqlx-core/src/mysql/cursor.rs
index 936f38d9..7dc8b553 100644
--- a/sqlx-core/src/mysql/cursor.rs
+++ b/sqlx-core/src/mysql/cursor.rs
@@ -6,7 +6,7 @@ use futures_core::future::BoxFuture;
 use crate::connection::{ConnectionSource, MaybeOwnedConnection};
 use crate::cursor::Cursor;
 use crate::executor::Execute;
-use crate::mysql::protocol::{ColumnCount, ColumnDefinition, Decode, Row, Status, TypeId};
+use crate::mysql::protocol::{ColumnCount, ColumnDefinition, Row, Status, TypeId};
 use crate::mysql::{MySql, MySqlArguments, MySqlConnection, MySqlRow};
 use crate::pool::Pool;
 
@@ -109,7 +109,7 @@ async fn next<'a, 'c: 'a, 'q: 'a>(
                 // At the start of the results we expect to see a
                 // COLUMN_COUNT followed by N COLUMN_DEF
 
-                let cc = ColumnCount::decode(conn.stream.packet())?;
+                let cc = ColumnCount::read(conn.stream.packet())?;
 
                 // We use these definitions to get the actual column types that is critical
                 // in parsing the rows coming back soon
@@ -120,7 +120,7 @@ async fn next<'a, 'c: 'a, 'q: 'a>(
                 let mut column_names = HashMap::with_capacity(cc.columns as usize);
 
                 for i in 0..cc.columns {
-                    let column = ColumnDefinition::decode(conn.stream.receive().await?)?;
+                    let column = ColumnDefinition::read(conn.stream.receive().await?)?;
 
                     cursor.column_types.push(column.type_id);
 
@@ -142,15 +142,12 @@ async fn next<'a, 'c: 'a, 'q: 'a>(
                     conn.stream.packet(),
                     &cursor.column_types,
                     &mut conn.current_row_values,
-                    // TODO: Text mode
                     cursor.binary,
                 )?;
 
                 let row = MySqlRow {
                     row,
                     columns: Arc::clone(&cursor.column_names),
-                    // TODO: Text mode
-                    binary: cursor.binary,
                 };
 
                 return Ok(Some(row));
diff --git a/sqlx-core/src/mysql/executor.rs b/sqlx-core/src/mysql/executor.rs
index 5a9a26f1..46800531 100644
--- a/sqlx-core/src/mysql/executor.rs
+++ b/sqlx-core/src/mysql/executor.rs
@@ -4,7 +4,7 @@ use crate::cursor::Cursor;
 use crate::describe::{Column, Describe};
 use crate::executor::{Execute, Executor, RefExecutor};
 use crate::mysql::protocol::{
-    self, ColumnDefinition, ComQuery, ComStmtExecute, ComStmtPrepare, ComStmtPrepareOk, Decode,
+    self, ColumnDefinition, ComQuery, ComStmtExecute, ComStmtPrepare, ComStmtPrepareOk,
     FieldFlags, Status,
 };
 use crate::mysql::{MySql, MySqlArguments, MySqlCursor, MySqlTypeInfo};
@@ -49,12 +49,12 @@ impl super::MySqlConnection {
             return self.stream.handle_err();
         }
 
-        ComStmtPrepareOk::decode(packet)
+        ComStmtPrepareOk::read(packet)
     }
 
     async fn drop_column_defs(&mut self, count: usize) -> crate::Result<()> {
         for _ in 0..count {
-            let _column = ColumnDefinition::decode(self.stream.receive().await?)?;
+            let _column = ColumnDefinition::read(self.stream.receive().await?)?;
         }
 
         if count > 0 {
@@ -168,7 +168,7 @@ impl super::MySqlConnection {
         let mut result_columns = Vec::with_capacity(stmt.columns as usize);
 
         for _ in 0..stmt.params {
-            let param = ColumnDefinition::decode(self.stream.receive().await?)?;
+            let param = ColumnDefinition::read(self.stream.receive().await?)?;
             param_types.push(MySqlTypeInfo::from_column_def(&param));
         }
 
@@ -177,7 +177,7 @@ impl super::MySqlConnection {
         }
 
         for _ in 0..stmt.columns {
-            let column = ColumnDefinition::decode(self.stream.receive().await?)?;
+            let column = ColumnDefinition::read(self.stream.receive().await?)?;
 
             result_columns.push(Column::<MySql> {
                 type_info: MySqlTypeInfo::from_column_def(&column),
diff --git a/sqlx-core/src/mysql/protocol/auth_switch.rs b/sqlx-core/src/mysql/protocol/auth_switch.rs
index 8c7315be..dfeb95f5 100644
--- a/sqlx-core/src/mysql/protocol/auth_switch.rs
+++ b/sqlx-core/src/mysql/protocol/auth_switch.rs
@@ -1,17 +1,15 @@
-use byteorder::LittleEndian;
-
 use crate::io::Buf;
-use crate::mysql::protocol::{AuthPlugin, Capabilities, Decode, Status};
+use crate::mysql::protocol::{AuthPlugin};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_connection_phase_packets_protocol_auth_switch_request.html
 #[derive(Debug)]
-pub struct AuthSwitch {
-    pub auth_plugin: AuthPlugin,
-    pub auth_plugin_data: Box<[u8]>,
+pub(crate) struct AuthSwitch {
+    pub(crate) auth_plugin: AuthPlugin,
+    pub(crate) auth_plugin_data: Box<[u8]>,
 }
 
-impl Decode for AuthSwitch {
-    fn decode(mut buf: &[u8]) -> crate::Result<Self>
+impl AuthSwitch {
+    pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self>
     where
         Self: Sized,
     {
diff --git a/sqlx-core/src/mysql/protocol/column_count.rs b/sqlx-core/src/mysql/protocol/column_count.rs
index 85bf0891..3ed537d4 100644
--- a/sqlx-core/src/mysql/protocol/column_count.rs
+++ b/sqlx-core/src/mysql/protocol/column_count.rs
@@ -1,16 +1,14 @@
 use byteorder::LittleEndian;
 
-use crate::io::Buf;
 use crate::mysql::io::BufExt;
-use crate::mysql::protocol::Decode;
 
 #[derive(Debug)]
 pub struct ColumnCount {
     pub columns: u64,
 }
 
-impl Decode for ColumnCount {
-    fn decode(mut buf: &[u8]) -> crate::Result<Self> {
+impl ColumnCount {
+    pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self> {
         let columns = buf.get_uint_lenenc::<LittleEndian>()?.unwrap_or(0);
 
         Ok(Self { columns })
diff --git a/sqlx-core/src/mysql/protocol/column_def.rs b/sqlx-core/src/mysql/protocol/column_def.rs
index b3fb6f7c..e20a9e41 100644
--- a/sqlx-core/src/mysql/protocol/column_def.rs
+++ b/sqlx-core/src/mysql/protocol/column_def.rs
@@ -2,7 +2,7 @@ use byteorder::LittleEndian;
 
 use crate::io::Buf;
 use crate::mysql::io::BufExt;
-use crate::mysql::protocol::{Decode, FieldFlags, TypeId};
+use crate::mysql::protocol::{FieldFlags, TypeId};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_com_query_response_text_resultset_column_definition.html
 // https://mariadb.com/kb/en/resultset/#column-definition-packet
@@ -33,8 +33,8 @@ impl ColumnDefinition {
     }
 }
 
-impl Decode for ColumnDefinition {
-    fn decode(mut buf: &[u8]) -> crate::Result<Self> {
+impl ColumnDefinition {
+    pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self> {
         // catalog : string<lenenc>
         let catalog = buf.get_str_lenenc::<LittleEndian>()?;
 
diff --git a/sqlx-core/src/mysql/protocol/com_ping.rs b/sqlx-core/src/mysql/protocol/com_ping.rs
index 8ebfed87..a90ce62b 100644
--- a/sqlx-core/src/mysql/protocol/com_ping.rs
+++ b/sqlx-core/src/mysql/protocol/com_ping.rs
@@ -1,7 +1,4 @@
-use byteorder::LittleEndian;
-
 use crate::io::BufMut;
-use crate::mysql::io::BufMutExt;
 use crate::mysql::protocol::{Capabilities, Encode};
 
 // https://dev.mysql.com/doc/internals/en/com-ping.html
diff --git a/sqlx-core/src/mysql/protocol/com_query.rs b/sqlx-core/src/mysql/protocol/com_query.rs
index 512caa71..0a8a2055 100644
--- a/sqlx-core/src/mysql/protocol/com_query.rs
+++ b/sqlx-core/src/mysql/protocol/com_query.rs
@@ -1,7 +1,4 @@
-use byteorder::LittleEndian;
-
 use crate::io::BufMut;
-use crate::mysql::io::BufMutExt;
 use crate::mysql::protocol::{Capabilities, Encode};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_com_query.html
diff --git a/sqlx-core/src/mysql/protocol/com_set_option.rs b/sqlx-core/src/mysql/protocol/com_set_option.rs
deleted file mode 100644
index 6ce7545c..00000000
--- a/sqlx-core/src/mysql/protocol/com_set_option.rs
+++ /dev/null
@@ -1,29 +0,0 @@
-use byteorder::LittleEndian;
-
-use crate::io::BufMut;
-use crate::mysql::io::BufMutExt;
-use crate::mysql::protocol::{Capabilities, Encode};
-
-// https://dev.mysql.com/doc/dev/mysql-server/8.0.12/mysql__com_8h.html#a53f60000da139fc7d547db96635a2c02
-#[derive(Debug, Copy, Clone)]
-#[repr(u16)]
-pub enum SetOption {
-    MultiStatementsOn = 0x00,
-    MultiStatementsOff = 0x01,
-}
-
-// https://dev.mysql.com/doc/internals/en/com-set-option.html
-#[derive(Debug)]
-pub struct ComSetOption {
-    pub option: SetOption,
-}
-
-impl Encode for ComSetOption {
-    fn encode(&self, buf: &mut Vec<u8>, _: Capabilities) {
-        // COM_SET_OPTION : int<1>
-        buf.put_u8(0x1a);
-
-        // option : int<2>
-        buf.put_u16::<LittleEndian>(self.option as u16);
-    }
-}
diff --git a/sqlx-core/src/mysql/protocol/com_stmt_execute.rs b/sqlx-core/src/mysql/protocol/com_stmt_execute.rs
index 591a7e9a..3c6d36af 100644
--- a/sqlx-core/src/mysql/protocol/com_stmt_execute.rs
+++ b/sqlx-core/src/mysql/protocol/com_stmt_execute.rs
@@ -1,7 +1,6 @@
 use byteorder::LittleEndian;
 
 use crate::io::BufMut;
-use crate::mysql::io::BufMutExt;
 use crate::mysql::protocol::{Capabilities, Encode};
 use crate::mysql::types::MySqlTypeInfo;
 
@@ -27,7 +26,7 @@ pub struct ComStmtExecute<'a> {
 }
 
 impl Encode for ComStmtExecute<'_> {
-    fn encode(&self, buf: &mut Vec<u8>, capabilities: Capabilities) {
+    fn encode(&self, buf: &mut Vec<u8>, _: Capabilities) {
         // COM_STMT_EXECUTE : int<1>
         buf.put_u8(0x17);
 
diff --git a/sqlx-core/src/mysql/protocol/com_stmt_prepare.rs b/sqlx-core/src/mysql/protocol/com_stmt_prepare.rs
index 4bb95e1d..74371337 100644
--- a/sqlx-core/src/mysql/protocol/com_stmt_prepare.rs
+++ b/sqlx-core/src/mysql/protocol/com_stmt_prepare.rs
@@ -1,7 +1,4 @@
-use byteorder::LittleEndian;
-
 use crate::io::BufMut;
-use crate::mysql::io::BufMutExt;
 use crate::mysql::protocol::{Capabilities, Encode};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_com_stmt_prepare.html
diff --git a/sqlx-core/src/mysql/protocol/com_stmt_prepare_ok.rs b/sqlx-core/src/mysql/protocol/com_stmt_prepare_ok.rs
index d2814582..ae34d2b6 100644
--- a/sqlx-core/src/mysql/protocol/com_stmt_prepare_ok.rs
+++ b/sqlx-core/src/mysql/protocol/com_stmt_prepare_ok.rs
@@ -1,27 +1,25 @@
 use byteorder::LittleEndian;
 
 use crate::io::Buf;
-use crate::mysql::io::BufExt;
-use crate::mysql::protocol::Decode;
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_com_stmt_prepare.html#sect_protocol_com_stmt_prepare_response_ok
 #[derive(Debug)]
-pub struct ComStmtPrepareOk {
-    pub statement_id: u32,
+pub(crate) struct ComStmtPrepareOk {
+    pub(crate) statement_id: u32,
 
     /// Number of columns in the returned result set (or 0 if statement
     /// does not return result set).
-    pub columns: u16,
+    pub(crate) columns: u16,
 
     /// Number of prepared statement parameters ('?' placeholders).
-    pub params: u16,
+    pub(crate) params: u16,
 
     /// Number of warnings.
-    pub warnings: u16,
+    pub(crate) warnings: u16,
 }
 
-impl Decode for ComStmtPrepareOk {
-    fn decode(mut buf: &[u8]) -> crate::Result<Self> {
+impl ComStmtPrepareOk {
+    pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self> {
         let header = buf.get_u8()?;
 
         if header != 0x00 {
diff --git a/sqlx-core/src/mysql/protocol/decode.rs b/sqlx-core/src/mysql/protocol/decode.rs
deleted file mode 100644
index 5a8dd601..00000000
--- a/sqlx-core/src/mysql/protocol/decode.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-use std::io;
-
-pub trait Decode {
-    fn decode(buf: &[u8]) -> crate::Result<Self>
-    where
-        Self: Sized;
-}
diff --git a/sqlx-core/src/mysql/protocol/encode.rs b/sqlx-core/src/mysql/protocol/encode.rs
deleted file mode 100644
index 154a577c..00000000
--- a/sqlx-core/src/mysql/protocol/encode.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use crate::io::BufMut;
-use crate::mysql::protocol::Capabilities;
-
-pub trait Encode {
-    fn encode(&self, buf: &mut Vec<u8>, capabilities: Capabilities);
-}
-
-impl Encode for &'_ [u8] {
-    fn encode(&self, buf: &mut Vec<u8>, _: Capabilities) {
-        buf.put_bytes(self);
-    }
-}
diff --git a/sqlx-core/src/mysql/protocol/eof.rs b/sqlx-core/src/mysql/protocol/eof.rs
index 093b9f6d..cb168857 100644
--- a/sqlx-core/src/mysql/protocol/eof.rs
+++ b/sqlx-core/src/mysql/protocol/eof.rs
@@ -1,8 +1,7 @@
 use byteorder::LittleEndian;
 
 use crate::io::Buf;
-use crate::mysql::io::BufExt;
-use crate::mysql::protocol::{Capabilities, Decode, Status};
+use crate::mysql::protocol::{Status};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_basic_eof_packet.html
 // https://mariadb.com/kb/en/eof_packet/
@@ -12,8 +11,8 @@ pub struct EofPacket {
     pub status: Status,
 }
 
-impl Decode for EofPacket {
-    fn decode(mut buf: &[u8]) -> crate::Result<Self>
+impl EofPacket {
+    pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self>
     where
         Self: Sized,
     {
diff --git a/sqlx-core/src/mysql/protocol/err.rs b/sqlx-core/src/mysql/protocol/err.rs
index 965d5413..0dd782a2 100644
--- a/sqlx-core/src/mysql/protocol/err.rs
+++ b/sqlx-core/src/mysql/protocol/err.rs
@@ -1,8 +1,7 @@
 use byteorder::LittleEndian;
 
 use crate::io::Buf;
-use crate::mysql::io::BufExt;
-use crate::mysql::protocol::{Capabilities, Decode, Status};
+use crate::mysql::protocol::{Capabilities};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_basic_err_packet.html
 // https://mariadb.com/kb/en/err_packet/
@@ -14,7 +13,7 @@ pub struct ErrPacket {
 }
 
 impl ErrPacket {
-    pub(crate) fn decode(mut buf: &[u8], capabilities: Capabilities) -> crate::Result<Self>
+    pub(crate) fn read(mut buf: &[u8], capabilities: Capabilities) -> crate::Result<Self>
     where
         Self: Sized,
     {
@@ -50,7 +49,7 @@ impl ErrPacket {
 
 #[cfg(test)]
 mod tests {
-    use super::{Capabilities, Decode, ErrPacket, Status};
+    use super::{Capabilities, ErrPacket};
 
     const ERR_PACKETS_OUT_OF_ORDER: &[u8] = b"\xff\x84\x04Got packets out of order";
 
@@ -58,7 +57,7 @@ mod tests {
 
     #[test]
     fn it_decodes_packets_out_of_order() {
-        let mut p = ErrPacket::decode(ERR_PACKETS_OUT_OF_ORDER, Capabilities::PROTOCOL_41).unwrap();
+        let p = ErrPacket::read(ERR_PACKETS_OUT_OF_ORDER, Capabilities::PROTOCOL_41).unwrap();
 
         assert_eq!(&*p.error_message, "Got packets out of order");
         assert_eq!(p.error_code, 1156);
@@ -67,7 +66,7 @@ mod tests {
 
     #[test]
     fn it_decodes_ok_handshake() {
-        let mut p = ErrPacket::decode(ERR_HANDSHAKE_UNKNOWN_DB, Capabilities::PROTOCOL_41).unwrap();
+        let p = ErrPacket::read(ERR_HANDSHAKE_UNKNOWN_DB, Capabilities::PROTOCOL_41).unwrap();
 
         assert_eq!(p.error_code, 1049);
         assert_eq!(p.sql_state.as_deref(), Some("42000"));
diff --git a/sqlx-core/src/mysql/protocol/handshake.rs b/sqlx-core/src/mysql/protocol/handshake.rs
index 9bfe3046..89364d38 100644
--- a/sqlx-core/src/mysql/protocol/handshake.rs
+++ b/sqlx-core/src/mysql/protocol/handshake.rs
@@ -1,24 +1,24 @@
 use byteorder::LittleEndian;
 
 use crate::io::Buf;
-use crate::mysql::protocol::{AuthPlugin, Capabilities, Decode, Status};
+use crate::mysql::protocol::{AuthPlugin, Capabilities, Status};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_connection_phase_packets_protocol_handshake_v10.html
 // https://mariadb.com/kb/en/connection/#initial-handshake-packet
 #[derive(Debug)]
-pub struct Handshake {
-    pub protocol_version: u8,
-    pub server_version: Box<str>,
-    pub connection_id: u32,
-    pub server_capabilities: Capabilities,
-    pub server_default_collation: u8,
-    pub status: Status,
-    pub auth_plugin: AuthPlugin,
-    pub auth_plugin_data: Box<[u8]>,
+pub(crate) struct Handshake {
+    pub(crate) protocol_version: u8,
+    pub(crate) server_version: Box<str>,
+    pub(crate) connection_id: u32,
+    pub(crate) server_capabilities: Capabilities,
+    pub(crate) server_default_collation: u8,
+    pub(crate) status: Status,
+    pub(crate) auth_plugin: AuthPlugin,
+    pub(crate) auth_plugin_data: Box<[u8]>,
 }
 
-impl Decode for Handshake {
-    fn decode(mut buf: &[u8]) -> crate::Result<Self>
+impl Handshake {
+    pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self>
     where
         Self: Sized,
     {
@@ -68,7 +68,7 @@ impl Decode for Handshake {
         } else {
             // capability_flags_3 : int<4>
             let capabilities_3 = buf.get_u32::<LittleEndian>()?;
-            capabilities |= Capabilities::from_bits_truncate((capabilities_2 as u64) << 32);
+            capabilities |= Capabilities::from_bits_truncate((capabilities_3 as u64) << 32);
         }
 
         if capabilities.contains(Capabilities::SECURE_CONNECTION) {
@@ -102,15 +102,15 @@ impl Decode for Handshake {
 
 #[cfg(test)]
 mod tests {
-    use super::{AuthPlugin, Capabilities, Decode, Handshake, Status};
+    use super::{AuthPlugin, Capabilities, Handshake, Status};
     use matches::assert_matches;
 
     const HANDSHAKE_MARIA_DB_10_4_7: &[u8] = b"\n5.5.5-10.4.7-MariaDB-1:10.4.7+maria~bionic\x00\x0b\x00\x00\x00t6L\\j\"dS\x00\xfe\xf7\x08\x02\x00\xff\x81\x15\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00U14Oph9\"<H5n\x00mysql_native_password\x00";
     const HANDSHAKE_MYSQL_8_0_18: &[u8] = b"\n8.0.18\x00\x19\x00\x00\x00\x114aB0c\x06g\x00\xff\xff\xff\x02\x00\xff\xc7\x15\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00tL\x03s\x0f[4\rl4. \x00caching_sha2_password\x00";
 
     #[test]
-    fn it_decodes_handshake_mysql_8_0_18() {
-        let mut p = Handshake::decode(HANDSHAKE_MYSQL_8_0_18).unwrap();
+    fn it_reads_handshake_mysql_8_0_18() {
+        let mut p = Handshake::read(HANDSHAKE_MYSQL_8_0_18).unwrap();
 
         assert_eq!(p.protocol_version, 10);
 
@@ -157,8 +157,8 @@ mod tests {
     }
 
     #[test]
-    fn it_decodes_handshake_mariadb_10_4_7() {
-        let mut p = Handshake::decode(HANDSHAKE_MARIA_DB_10_4_7).unwrap();
+    fn it_reads_handshake_mariadb_10_4_7() {
+        let mut p = Handshake::read(HANDSHAKE_MARIA_DB_10_4_7).unwrap();
 
         assert_eq!(p.protocol_version, 10);
 
diff --git a/sqlx-core/src/mysql/protocol/mod.rs b/sqlx-core/src/mysql/protocol/mod.rs
index e6e0afdc..f890c1e5 100644
--- a/sqlx-core/src/mysql/protocol/mod.rs
+++ b/sqlx-core/src/mysql/protocol/mod.rs
@@ -1,38 +1,26 @@
-// There is much to the protocol that is not yet used. As we mature we'll be trimming
-// the size of this module to exactly what is necessary.
-#![allow(unused)]
-
-mod decode;
-mod encode;
-
-pub use decode::Decode;
-pub use encode::Encode;
-
 mod auth_plugin;
 mod capabilities;
 mod field;
 mod status;
 mod r#type;
 
-pub use auth_plugin::AuthPlugin;
-pub use capabilities::Capabilities;
-pub use field::FieldFlags;
-pub use r#type::TypeId;
-pub use status::Status;
+pub(crate) use auth_plugin::AuthPlugin;
+pub(crate) use capabilities::Capabilities;
+pub(crate) use field::FieldFlags;
+pub(crate) use r#type::TypeId;
+pub(crate) use status::Status;
 
 mod com_ping;
 mod com_query;
-mod com_set_option;
 mod com_stmt_execute;
 mod com_stmt_prepare;
 mod handshake;
 
-pub use com_ping::ComPing;
-pub use com_query::ComQuery;
-pub use com_set_option::{ComSetOption, SetOption};
-pub use com_stmt_execute::{ComStmtExecute, Cursor};
-pub use com_stmt_prepare::ComStmtPrepare;
-pub use handshake::Handshake;
+pub(crate) use com_ping::ComPing;
+pub(crate) use com_query::ComQuery;
+pub(crate) use com_stmt_execute::{ComStmtExecute, Cursor};
+pub(crate) use com_stmt_prepare::ComStmtPrepare;
+pub(crate) use handshake::Handshake;
 
 mod auth_switch;
 mod column_count;
@@ -43,15 +31,29 @@ mod err;
 mod handshake_response;
 mod ok;
 mod row;
+#[cfg_attr(not(feature = "tls"), allow(unused_imports, dead_code))]
 mod ssl_request;
 
-pub use auth_switch::AuthSwitch;
-pub use column_count::ColumnCount;
-pub use column_def::ColumnDefinition;
-pub use com_stmt_prepare_ok::ComStmtPrepareOk;
-pub use eof::EofPacket;
-pub use err::ErrPacket;
-pub use handshake_response::HandshakeResponse;
-pub use ok::OkPacket;
-pub use row::Row;
-pub use ssl_request::SslRequest;
+pub(crate) use auth_switch::AuthSwitch;
+pub(crate) use column_count::ColumnCount;
+pub(crate) use column_def::ColumnDefinition;
+pub(crate) use com_stmt_prepare_ok::ComStmtPrepareOk;
+pub(crate) use eof::EofPacket;
+pub(crate) use err::ErrPacket;
+pub(crate) use handshake_response::HandshakeResponse;
+pub(crate) use ok::OkPacket;
+pub(crate) use row::Row;
+#[cfg_attr(not(feature = "tls"), allow(unused_imports, dead_code))]
+pub(crate) use ssl_request::SslRequest;
+
+pub(crate) trait Encode {
+    fn encode(&self, buf: &mut Vec<u8>, capabilities: Capabilities);
+}
+
+impl Encode for &'_ [u8] {
+    fn encode(&self, buf: &mut Vec<u8>, _: Capabilities) {
+        use crate::io::BufMut;
+
+        buf.put_bytes(self);
+    }
+}
diff --git a/sqlx-core/src/mysql/protocol/ok.rs b/sqlx-core/src/mysql/protocol/ok.rs
index cd7986aa..30f3f974 100644
--- a/sqlx-core/src/mysql/protocol/ok.rs
+++ b/sqlx-core/src/mysql/protocol/ok.rs
@@ -2,21 +2,21 @@ use byteorder::LittleEndian;
 
 use crate::io::Buf;
 use crate::mysql::io::BufExt;
-use crate::mysql::protocol::{Capabilities, Decode, Status};
+use crate::mysql::protocol::{Status};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_basic_ok_packet.html
 // https://mariadb.com/kb/en/ok_packet/
 #[derive(Debug)]
-pub struct OkPacket {
-    pub affected_rows: u64,
-    pub last_insert_id: u64,
-    pub status: Status,
-    pub warnings: u16,
-    pub info: Box<str>,
+pub(crate) struct OkPacket {
+    pub(crate) affected_rows: u64,
+    pub(crate) last_insert_id: u64,
+    pub(crate) status: Status,
+    pub(crate) warnings: u16,
+    pub(crate) info: Box<str>,
 }
 
-impl Decode for OkPacket {
-    fn decode(mut buf: &[u8]) -> crate::Result<Self>
+impl OkPacket {
+    pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self>
     where
         Self: Sized,
     {
@@ -46,13 +46,13 @@ impl Decode for OkPacket {
 
 #[cfg(test)]
 mod tests {
-    use super::{Capabilities, Decode, OkPacket, Status};
+    use super::{OkPacket, Status};
 
     const OK_HANDSHAKE: &[u8] = b"\x00\x00\x00\x02@\x00\x00";
 
     #[test]
     fn it_decodes_ok_handshake() {
-        let mut p = OkPacket::decode(OK_HANDSHAKE).unwrap();
+        let p = OkPacket::read(OK_HANDSHAKE).unwrap();
 
         assert_eq!(p.affected_rows, 0);
         assert_eq!(p.last_insert_id, 0);
diff --git a/sqlx-core/src/mysql/protocol/row.rs b/sqlx-core/src/mysql/protocol/row.rs
index 2c275a22..9d74dcd9 100644
--- a/sqlx-core/src/mysql/protocol/row.rs
+++ b/sqlx-core/src/mysql/protocol/row.rs
@@ -3,21 +3,20 @@ use std::ops::Range;
 use byteorder::{ByteOrder, LittleEndian};
 
 use crate::io::Buf;
-use crate::mysql::io::BufExt;
-use crate::mysql::protocol::{Decode, TypeId};
+use crate::mysql::protocol::{TypeId};
 
-pub struct Row<'c> {
+pub(crate) struct Row<'c> {
     buffer: &'c [u8],
     values: &'c [Option<Range<usize>>],
-    binary: bool,
+    pub(crate) binary: bool,
 }
 
 impl<'c> Row<'c> {
-    pub fn len(&self) -> usize {
+    pub(crate) fn len(&self) -> usize {
         self.values.len()
     }
 
-    pub fn get(&self, index: usize) -> Option<&'c [u8]> {
+    pub(crate) fn get(&self, index: usize) -> Option<&'c [u8]> {
         let range = self.values[index].as_ref()?;
 
         Some(&self.buffer[(range.start as usize)..(range.end as usize)])
@@ -54,13 +53,13 @@ fn get_lenenc(buf: &[u8]) -> (usize, Option<usize>) {
 }
 
 impl<'c> Row<'c> {
-    pub fn read(
+    pub(crate) fn read(
         mut buf: &'c [u8],
         columns: &[TypeId],
         values: &'c mut Vec<Option<Range<usize>>>,
         binary: bool,
     ) -> crate::Result<Self> {
-        let mut buffer = &*buf;
+        let buffer = &*buf;
 
         values.clear();
         values.reserve(columns.len());
@@ -68,7 +67,7 @@ impl<'c> Row<'c> {
         if !binary {
             let mut index = 0;
 
-            for column_idx in 0..columns.len() {
+            for _ in 0..columns.len() {
                 let (len_size, size) = get_lenenc(&buf[index..]);
 
                 if let Some(size) = size {
@@ -77,7 +76,7 @@ impl<'c> Row<'c> {
                     values.push(None);
                 }
 
-                index += (len_size + size.unwrap_or_default());
+                index += len_size + size.unwrap_or_default();
             }
 
             return Ok(Self {
diff --git a/sqlx-core/src/mysql/protocol/ssl_request.rs b/sqlx-core/src/mysql/protocol/ssl_request.rs
index fea5ef8e..bbf781c6 100644
--- a/sqlx-core/src/mysql/protocol/ssl_request.rs
+++ b/sqlx-core/src/mysql/protocol/ssl_request.rs
@@ -1,8 +1,7 @@
 use byteorder::LittleEndian;
 
 use crate::io::BufMut;
-use crate::mysql::io::BufMutExt;
-use crate::mysql::protocol::{AuthPlugin, Capabilities, Encode};
+use crate::mysql::protocol::{Capabilities, Encode};
 
 // https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_connection_phase_packets_protocol_handshake_response.html
 // https://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::SSLRequest
diff --git a/sqlx-core/src/mysql/protocol/type.rs b/sqlx-core/src/mysql/protocol/type.rs
index b242ed02..38ecb453 100644
--- a/sqlx-core/src/mysql/protocol/type.rs
+++ b/sqlx-core/src/mysql/protocol/type.rs
@@ -49,7 +49,7 @@ type_id_consts! {
     pub const SMALL_INT: TypeId = TypeId(2);
     pub const INT: TypeId = TypeId(3);
     pub const BIG_INT: TypeId = TypeId(8);
-    pub const MEDIUM_INT: TypeId = TypeId(9);
+    // pub const MEDIUM_INT: TypeId = TypeId(9);
 
     // Numeric: FLOAT, DOUBLE
     pub const FLOAT: TypeId = TypeId(4);
diff --git a/sqlx-core/src/mysql/row.rs b/sqlx-core/src/mysql/row.rs
index 72338c60..73d19480 100644
--- a/sqlx-core/src/mysql/row.rs
+++ b/sqlx-core/src/mysql/row.rs
@@ -28,7 +28,6 @@ impl<'c> TryFrom<Option<MySqlValue<'c>>> for MySqlValue<'c> {
 pub struct MySqlRow<'c> {
     pub(super) row: protocol::Row<'c>,
     pub(super) columns: Arc<HashMap<Box<str>, u16>>,
-    pub(super) binary: bool,
 }
 
 impl<'c> Row<'c> for MySqlRow<'c> {
@@ -45,7 +44,7 @@ impl<'c> Row<'c> for MySqlRow<'c> {
         let index = index.resolve(self)?;
 
         Ok(self.row.get(index).map(|buf| {
-            if self.binary {
+            if self.row.binary {
                 MySqlValue::Binary(buf)
             } else {
                 MySqlValue::Text(buf)
diff --git a/sqlx-core/src/mysql/stream.rs b/sqlx-core/src/mysql/stream.rs
index d5ad18bc..4f85d74b 100644
--- a/sqlx-core/src/mysql/stream.rs
+++ b/sqlx-core/src/mysql/stream.rs
@@ -3,7 +3,7 @@ use std::net::Shutdown;
 use byteorder::{ByteOrder, LittleEndian};
 
 use crate::io::{Buf, BufMut, BufStream, MaybeTlsStream};
-use crate::mysql::protocol::{Capabilities, Decode, Encode, EofPacket, ErrPacket, OkPacket};
+use crate::mysql::protocol::{Capabilities, Encode, EofPacket, ErrPacket, OkPacket};
 use crate::mysql::MySqlError;
 use crate::url::Url;
 
@@ -163,7 +163,7 @@ impl MySqlStream {
 impl MySqlStream {
     pub(crate) async fn maybe_receive_eof(&mut self) -> crate::Result<()> {
         if !self.capabilities.contains(Capabilities::DEPRECATE_EOF) {
-            let _eof = EofPacket::decode(self.receive().await?)?;
+            let _eof = EofPacket::read(self.receive().await?)?;
         }
 
         Ok(())
@@ -171,7 +171,7 @@ impl MySqlStream {
 
     pub(crate) fn maybe_handle_eof(&mut self) -> crate::Result<Option<EofPacket>> {
         if !self.capabilities.contains(Capabilities::DEPRECATE_EOF) && self.packet()[0] == 0xFE {
-            Ok(Some(EofPacket::decode(self.packet())?))
+            Ok(Some(EofPacket::read(self.packet())?))
         } else {
             Ok(None)
         }
@@ -182,10 +182,10 @@ impl MySqlStream {
     }
 
     pub(crate) fn handle_err<T>(&mut self) -> crate::Result<T> {
-        Err(MySqlError(ErrPacket::decode(self.packet(), self.capabilities)?).into())
+        Err(MySqlError(ErrPacket::read(self.packet(), self.capabilities)?).into())
     }
 
     pub(crate) fn handle_ok(&mut self) -> crate::Result<OkPacket> {
-        OkPacket::decode(self.packet())
+        OkPacket::read(self.packet())
     }
 }