apache/spark — pull request #1774 by yhuai (2014-08-05 00:26:32+00:00)
Title: [SPARK-2179] [SQL] Public API for DataTypes and Schema (Draft update for SQL programming guide)

This is the draft update for SQL programming guide. It adds doc for the data type and schema APIs. You can access it at http://yhuai.github.io/site/sql-programming-guide.html.