diff --git a/sqlx-core/src/lib.rs b/sqlx-core/src/lib.rs
index 43b8fe4a..6619214f 100644
--- a/sqlx-core/src/lib.rs
+++ b/sqlx-core/src/lib.rs
@@ -1,4 +1,5 @@
 #![recursion_limit="256"]
+#![allow(unused_imports)]
 
 #[macro_use]
 mod macros;
diff --git a/sqlx-core/src/mariadb/backend.rs b/sqlx-core/src/mariadb/backend.rs
index 9f204be8..f71eda74 100644
--- a/sqlx-core/src/mariadb/backend.rs
+++ b/sqlx-core/src/mariadb/backend.rs
@@ -1,4 +1,6 @@
-use super::{MariaDb, MariaDbQueryParameters, MariaDbRow};
+use super::MariaDb;
+use crate::mariadb::protocol::ResultRow;
+use crate::mariadb::query::MariaDbQueryParameters;
 use crate::{
     backend::Backend,
     describe::{Describe, ResultField},
@@ -9,7 +11,7 @@ use crate::url::Url;
 
 impl Backend for MariaDb {
     type QueryParameters = MariaDbQueryParameters;
-    type Row = MariaDbRow;
+    type Row = ResultRow;
     type TableIdent = String;
 
     fn open(url: &str) -> BoxFuture<'static, crate::Result<Self>> {
@@ -21,15 +23,11 @@ impl Backend for MariaDb {
         })
     }
 
-    fn close(mut self) -> BoxFuture<'static, crate::Result<()>> {
+    fn close(self) -> BoxFuture<'static, crate::Result<()>> {
         Box::pin(async move {
             self.close().await
         })
     }
-
-    // async fn ping(&mut self) -> crate::Result<()> {
-    //     self.ping().await
-    // }
 }
 
 impl_from_row_for_backend!(MariaDb);
diff --git a/sqlx-core/src/mariadb/connection.rs b/sqlx-core/src/mariadb/connection.rs
index 67c763ce..44c6bd7e 100644
--- a/sqlx-core/src/mariadb/connection.rs
+++ b/sqlx-core/src/mariadb/connection.rs
@@ -7,7 +7,7 @@ use crate::{
             ComStmtExecute, ComStmtPrepare, ComStmtPrepareOk, Encode, EofPacket, ErrPacket,
             OkPacket, ResultRow, StmtExecFlag,
         },
-        MariaDbQueryParameters,
+        query::MariaDbQueryParameters,
     },
     Error, Result,
 };
@@ -157,17 +157,6 @@ impl MariaDb {
         })
     }
 
-    pub(super) async fn check_eof(&mut self) -> Result<()> {
-        if !self
-            .capabilities
-            .contains(Capabilities::CLIENT_DEPRECATE_EOF)
-        {
-            let _ = EofPacket::decode(self.receive().await?)?;
-        }
-
-        Ok(())
-    }
-
     pub(super) async fn send_prepare<'c>(
         &'c mut self,
         statement: &'c str,
@@ -189,35 +178,6 @@ impl MariaDb {
         ComStmtPrepareOk::decode(packet).map_err(Into::into)
     }
 
-    pub(super) async fn step(
-        &mut self,
-        columns: &Vec<ColumnDefinitionPacket>,
-        packet: &[u8],
-    ) -> Result<Option<ResultRow>> {
-        // For each row in the result set we will receive a ResultRow packet.
-        // We may receive an [OkPacket], [EofPacket], or [ErrPacket] (depending on if EOFs are enabled) to finalize the iteration.
-        if packet[0] == 0xFE && packet.len() < 0xFF_FF_FF {
-            // NOTE: It's possible for a ResultRow to start with 0xFE (which would normally signify end-of-rows)
-            //       but it's not possible for an Ok/Eof to be larger than 0xFF_FF_FF.
-            if !self
-                .capabilities
-                .contains(Capabilities::CLIENT_DEPRECATE_EOF)
-            {
-                let _eof = EofPacket::decode(packet)?;
-                Ok(None)
-            } else {
-                let _ok = OkPacket::decode(packet, self.capabilities)?;
-                Ok(None)
-            }
-        } else if packet[0] == 0xFF {
-            let _ = ErrPacket::decode(packet)?;
-            // TODO: Should be error
-            Ok(None)
-        } else {
-            Ok(Some(ResultRow::decode(packet, columns)?))
-        }
-    }
-
     pub(super) async fn column_definitions(
         &mut self
     ) -> Result<Vec<ColumnDefinitionPacket>> {
diff --git a/sqlx-core/src/mariadb/executor.rs b/sqlx-core/src/mariadb/executor.rs
index 1a7e40eb..5fafaf04 100644
--- a/sqlx-core/src/mariadb/executor.rs
+++ b/sqlx-core/src/mariadb/executor.rs
@@ -1,4 +1,4 @@
-use super::{MariaDb, MariaDbQueryParameters, MariaDbRow};
+use super::MariaDb;
 use crate::{
     backend::Backend,
     describe::{Describe, ResultField},
@@ -8,6 +8,7 @@ use crate::{
         Capabilities, ColumnCountPacket, ColumnDefinitionPacket, ComStmtExecute, EofPacket,
         ErrPacket, OkPacket, ResultRow, StmtExecFlag,
     },
+    mariadb::query::MariaDbQueryParameters,
     row::FromRow,
     url::Url,
 };
@@ -28,7 +29,7 @@ impl Executor for MariaDb {
 
         Box::pin(async move {
             let prepare = self.send_prepare(query).await?;
-            self.send_execute(prepare.statement_id, params);
+            self.send_execute(prepare.statement_id, params).await?;
 
             let columns = self.column_definitions().await?;
             let capabilities = self.capabilities;
@@ -77,7 +78,7 @@ impl Executor for MariaDb {
 
          Box::pin(async_stream::try_stream! {
             let prepare = self.send_prepare(query).await?;
-            self.send_execute(prepare.statement_id, params);
+            self.send_execute(prepare.statement_id, params).await?;
 
             let columns = self.column_definitions().await?;
             let capabilities = self.capabilities;
diff --git a/sqlx-core/src/mariadb/mod.rs b/sqlx-core/src/mariadb/mod.rs
index 5d33572d..eea94377 100644
--- a/sqlx-core/src/mariadb/mod.rs
+++ b/sqlx-core/src/mariadb/mod.rs
@@ -9,4 +9,4 @@ mod query;
 mod row;
 pub mod types;
 
-pub use self::{connection::MariaDb, query::MariaDbQueryParameters, row::MariaDbRow};
+pub use self::connection::MariaDb;
diff --git a/sqlx-core/src/mariadb/row.rs b/sqlx-core/src/mariadb/row.rs
index 50031110..fcb13b19 100644
--- a/sqlx-core/src/mariadb/row.rs
+++ b/sqlx-core/src/mariadb/row.rs
@@ -3,20 +3,17 @@ use crate::{
     row::Row,
 };
 
-#[derive(Debug)]
-pub struct MariaDbRow(pub(crate) ResultRow);
-
-impl Row for MariaDbRow {
+impl Row for ResultRow {
     type Backend = MariaDb;
 
     #[inline]
     fn len(&self) -> usize {
-        self.0.values.len()
+        self.values.len()
     }
 
     #[inline]
     fn get_raw(&self, index: usize) -> Option<&[u8]> {
-        self.0.values[index]
+        self.values[index]
             .as_ref()
             .map(|value| unsafe { value.as_ref() })
     }
diff --git a/sqlx-core/src/postgres/backend.rs b/sqlx-core/src/postgres/backend.rs
index a92359ba..20e0e0c1 100644
--- a/sqlx-core/src/postgres/backend.rs
+++ b/sqlx-core/src/postgres/backend.rs
@@ -1,16 +1,18 @@
-use super::{connection::Step, Postgres, PostgresQueryParameters, PostgresRow};
+use super::{connection::Step, Postgres};
 use crate::{
     backend::Backend,
     describe::{Describe, ResultField},
+    postgres::protocol::DataRow,
     params::QueryParameters,
     url::Url,
 };
 use futures_core::{future::BoxFuture, stream::BoxStream};
+use crate::postgres::query::PostgresQueryParameters;
 
 impl Backend for Postgres {
     type QueryParameters = PostgresQueryParameters;
 
-    type Row = PostgresRow;
+    type Row = DataRow;
 
     type TableIdent = u32;
 
@@ -33,7 +35,7 @@ impl Backend for Postgres {
         })
     }
 
-    fn close(mut self) -> BoxFuture<'static, crate::Result<()>> {
+    fn close(self) -> BoxFuture<'static, crate::Result<()>> {
         Box::pin(self.terminate())
     }
 }
diff --git a/sqlx-core/src/postgres/connection.rs b/sqlx-core/src/postgres/connection.rs
index 7ad9793e..4ded3855 100644
--- a/sqlx-core/src/postgres/connection.rs
+++ b/sqlx-core/src/postgres/connection.rs
@@ -2,7 +2,6 @@ use crate::{
     io::{Buf, BufStream},
     postgres::{
         protocol::{self, Decode, Encode, Message},
-        PostgresDatabaseError, PostgresQueryParameters, PostgresRow,
     },
 };
 use async_std::net::TcpStream;
@@ -11,6 +10,8 @@ use std::{
     io,
     net::{Shutdown, SocketAddr},
 };
+use crate::postgres::query::PostgresQueryParameters;
+use crate::postgres::error::PostgresDatabaseError;
 
 pub struct Postgres {
     stream: BufStream<TcpStream>,
@@ -193,7 +194,7 @@ impl Postgres {
                 }
 
                 Message::DataRow(body) => {
-                    return Ok(Some(Step::Row(PostgresRow(body))));
+                    return Ok(Some(Step::Row(body)));
                 }
 
                 Message::ReadyForQuery(_) => {
@@ -291,7 +292,7 @@ impl Postgres {
 #[derive(Debug)]
 pub(super) enum Step {
     Command(u64),
-    Row(PostgresRow),
+    Row(protocol::DataRow),
     ParamDesc(Box<protocol::ParameterDescription>),
     RowDesc(Box<protocol::RowDescription>),
 }
diff --git a/sqlx-core/src/postgres/executor.rs b/sqlx-core/src/postgres/executor.rs
index 18eb6c51..c014eb3f 100644
--- a/sqlx-core/src/postgres/executor.rs
+++ b/sqlx-core/src/postgres/executor.rs
@@ -1,4 +1,4 @@
-use super::{connection::Step, Postgres, PostgresQueryParameters, PostgresRow};
+use super::{connection::Step, Postgres};
 use crate::{
     backend::Backend,
     describe::{Describe, ResultField},
@@ -104,7 +104,7 @@ impl Executor for Postgres {
         query: &'q str,
     ) -> BoxFuture<'e, crate::Result<Describe<Self::Backend>>> {
         Box::pin(async move {
-            self.parse("", query, &PostgresQueryParameters::new());
+            self.parse("", query, &QueryParameters::new());
             self.describe("");
             self.sync().await?;
 
diff --git a/sqlx-core/src/postgres/mod.rs b/sqlx-core/src/postgres/mod.rs
index e6c77936..a51d821b 100644
--- a/sqlx-core/src/postgres/mod.rs
+++ b/sqlx-core/src/postgres/mod.rs
@@ -14,6 +14,5 @@ pub mod protocol;
 pub mod types;
 
 pub use self::{
-    connection::Postgres, error::PostgresDatabaseError, query::PostgresQueryParameters,
-    row::PostgresRow,
+    connection::Postgres
 };
diff --git a/sqlx-core/src/postgres/protocol/data_row.rs b/sqlx-core/src/postgres/protocol/data_row.rs
index 70039429..8c4dbcd9 100644
--- a/sqlx-core/src/postgres/protocol/data_row.rs
+++ b/sqlx-core/src/postgres/protocol/data_row.rs
@@ -11,7 +11,7 @@ use std::{
 pub struct DataRow {
     #[used]
     buffer: Pin<Box<[u8]>>,
-    values: Box<[Option<NonNull<[u8]>>]>,
+    pub(crate) values: Box<[Option<NonNull<[u8]>>]>,
 }
 
 // SAFE: Raw pointers point to pinned memory inside the struct
@@ -46,31 +46,14 @@ impl Decode for DataRow {
     }
 }
 
-impl DataRow {
-    #[inline]
-    pub fn is_empty(&self) -> bool {
-        self.values.is_empty()
-    }
-
-    #[inline]
-    pub fn len(&self) -> usize {
-        self.values.len()
-    }
-
-    #[inline]
-    pub fn get(&self, index: usize) -> Option<&[u8]> {
-        self.values[index]
-            .as_ref()
-            .map(|value| unsafe { value.as_ref() })
-    }
-}
-
 impl Debug for DataRow {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        use crate::row::Row;
+
         write!(f, "DataRow(")?;
 
         f.debug_list()
-            .entries((0..self.len()).map(|i| self.get(i).map(ByteStr)))
+            .entries((0..self.len()).map(|i| self.get_raw(i).map(ByteStr)))
             .finish()?;
 
         write!(f, ")")?;
diff --git a/sqlx-core/src/postgres/row.rs b/sqlx-core/src/postgres/row.rs
index f612f422..d182a052 100644
--- a/sqlx-core/src/postgres/row.rs
+++ b/sqlx-core/src/postgres/row.rs
@@ -1,19 +1,16 @@
 use super::{protocol::DataRow, Postgres};
 use crate::row::Row;
 
-#[derive(Debug)]
-pub struct PostgresRow(pub(crate) DataRow);
-
-impl Row for PostgresRow {
+impl Row for DataRow {
     type Backend = Postgres;
 
-    #[inline]
     fn len(&self) -> usize {
-        self.0.len()
+        self.values.len()
     }
 
-    #[inline]
     fn get_raw(&self, index: usize) -> Option<&[u8]> {
-        self.0.get(index)
+        self.values[index]
+            .as_ref()
+            .map(|value| unsafe { value.as_ref() })
     }
 }