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Amr Awadallah commented on PIG-824: ----------------------------------- I am out of office on vacation and will be slower than usual in responding to emails. If this is urgent then please call my cell phone (or send an sms), otherwise I will reply to your email when I get back. Thanks for your patience, -- amr > 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 > Assignee: Thejas M Nair > Attachments: java-cup-11a-runtime.jar, java-cup-11a.jar, > PIG-824.1.patch, PIG-824.binfiles.tar.gz, pig_sql_beta.pdf, pigsql.patch, > pigsql_tutorial.txt, SQL_IN_PIG.html, students2.bin, students_attr.bin > > > 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 -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.