lpsmith/postgresql-simple — pull request #24 by sopvop (2012-07-25 15:06:41+00:00)
Title: Added ToRow instance for (:.)

Very useful if you store multipart data in same table
```haskell
updateSomethind id data_a_b data_c =
execute conn "update \"foo_table\" set a = ?, b = ?, c = ? where id = ?"
data_a_b :. data_c :. Only(id)
```