This package contiains typeful relation structure and
 relational-algebraic query building DSL which can
 translate into SQL query.
 Supported query features are below:
 + Type safe query building
 + Restriction, Join, Aggregation
 + Modularized relations
 + Typed placeholders
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.