Thejas M Nair updated PIG-824:

    Attachment: SQL_IN_PIG.html

PIG-824.binfiles.tar.gz - contains libs that it depends on
PIG-824.1.patch - patch
SQL_IN_PIG.html - (brief) document

JFlex.jar has not been included because it covered by GPL. It will have to be 
downloaded to lib dir for building with the patch. In future Ivy will be setup 
to download it .

> SQL interface for Pig
> ---------------------
>                 Key: PIG-824
>                 URL: https://issues.apache.org/jira/browse/PIG-824
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Olga Natkovich
>         Attachments: PIG-824.1.patch, PIG-824.binfiles.tar.gz, SQL_IN_PIG.html
> In the last 18 month PigLatin has gained significant popularity within the 
> open source community. Many users like its data flow model, its rich type 
> system and its ability to work with any data available on HDFS or outside. We 
> have also heard from many users that having Pig speak SQL would bring many 
> more users. Having a single system that exports multiple interfaces is a big 
> advantage as it guarantees consistent semantics, custom code reuse, and 
> reduces the amount of maintenance. This is especially relevant for project 
> where using both interfaces for different parts of the system is relevant.  
> For instance, in a 
> data warehousing system, you would have ETL component that brings data  into 
> the warehouse and a component that analyzes the data and produces reports. 
> PigLatin is uniquely suited for ETL processing while SQL might be a better 
> fit for report generation.
> To start, it would make sense to implement a subset of SQL92 standard and to 
> be as much as possible standard compliant. This would include all the 
> standard constructs: select, from, where, group-by + having, order by, limit, 
> join (inner + outer). Several extensions  such as support for pig's UDFs and 
> possibly streaming, multiquery and support for pig's complex types would be 
> helpful.
> This work is dependent on metadata support outlined in 
> https://issues.apache.org/jira/browse/PIG-823

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