diff --git a/demo/Main.hs b/demo/Main.hs
--- a/demo/Main.hs
+++ b/demo/Main.hs
@@ -48,11 +48,12 @@
       H.tx (Just (H.Serializable, True)) $ do
         -- Use MaybeT to handle empty results:
         runMaybeT $ do
-          do
-            Identity balance1 <- MaybeT $ H.single $ [H.q|SELECT balance FROM a WHERE id=?|] id1
-            Identity balance2 <- MaybeT $ H.single $ [H.q|SELECT balance FROM a WHERE id=?|] id2
-            lift $ H.unit $ [H.q|UPDATE a SET balance=? WHERE id=?|] (balance1 - amount) id1
-            lift $ H.unit $ [H.q|UPDATE a SET balance=? WHERE id=?|] (balance2 + amount) id2
+          -- To distinguish results rows containing just one column, 
+          -- we use 'Identity' as a sort of a single element tuple.
+          Identity balance1 <- MaybeT $ H.single $ [H.q|SELECT balance FROM a WHERE id=?|] id1
+          Identity balance2 <- MaybeT $ H.single $ [H.q|SELECT balance FROM a WHERE id=?|] id2
+          lift $ H.unit $ [H.q|UPDATE a SET balance=? WHERE id=?|] (balance1 - amount) id1
+          lift $ H.unit $ [H.q|UPDATE a SET balance=? WHERE id=?|] (balance2 + amount) id2
 
     -- Output all the updated rows:
     do
diff --git a/hasql.cabal b/hasql.cabal
--- a/hasql.cabal
+++ b/hasql.cabal
@@ -1,7 +1,7 @@
 name:
   hasql
 version:
-  0.1.3
+  0.1.4
 synopsis:
   A minimalistic general high level API for relational databases
 description:
@@ -40,9 +40,11 @@
   .
   Links:
   .
-  * <http://hackage.haskell.org/package/hasql-0.1.3/src/demo/Main.hs A basic tutorial-demo>
+  * <http://nikita-volkov.github.io/hasql-benchmarks/ Benchmarks analysis>.
   .
-  * <http://hackage.haskell.org/package/hasql-postgres A PostgreSQL backend>
+  * <http://hackage.haskell.org/package/hasql-0.1.3/src/demo/Main.hs A basic tutorial-demo>.
+  .
+  * <http://hackage.haskell.org/package/hasql-postgres A PostgreSQL backend>.
   .
 category:
   Database
diff --git a/library/Hasql.hs b/library/Hasql.hs
--- a/library/Hasql.hs
+++ b/library/Hasql.hs
@@ -2,7 +2,7 @@
 -- This is the API of the \"hasql\" library.
 -- For an introduction to the package 
 -- and links to more documentation please refer to 
--- <index.html the package's index page>.
+-- <../ the package's index page>.
 module Hasql
 (
   -- * Session
@@ -15,9 +15,11 @@
 
   -- * Transaction
   Tx,
+  tx,
+
+  -- ** Transaction Settings
   Mode,
   Backend.IsolationLevel(..),
-  tx,
 
   -- * Statement Quasi-Quoter
   QQ.q,
@@ -146,7 +148,7 @@
   -- Attempt to parse a row into an incompatible type.
   -- Indicates either a mismatching schema or an incorrect query.
   UnparsableRow Text
-  deriving (Show, Typeable)
+  deriving (Show, Typeable, Eq, Ord)
 
 instance Exception Error
 
@@ -258,7 +260,7 @@
 
 -- |
 -- Execute a @SELECT@ statement,
--- and produce a vector of results.
+-- and produce a list of results.
 list :: Backend b => RowParser b r => Backend.Statement b -> Tx b s [r]
 list s =
   Tx $ ReaderT $ \c -> do
diff --git a/library/Hasql/RowParser.hs b/library/Hasql/RowParser.hs
--- a/library/Hasql/RowParser.hs
+++ b/library/Hasql/RowParser.hs
@@ -26,7 +26,7 @@
     InstanceD constraints head [parseRowDec]
     where
       varNames =
-        [1 .. arity] >>= \i -> return (mkName ('_' : show i))
+        [1 .. arity] >>= \i -> return (mkName ('v' : show i))
       varTypes =
         map VarT varNames
       backendType =