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catap / jaql

Jaql is a query language designed for Javascript Object Notation (JSON), a data format that has become popular because of its simplicity and modeling flexibility. Jaql is primarily used to analyze large-scale semi-structured data. Core features include user extensibility and parallelism. In addition to modeling semi-structured data, JSON simplifies extensibility. Hadoop's Map-Reduce is used for parallelism.
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Creating a branch for FilterPushDown #89

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
Purpose of code changes on this branch:
>>This version supports pushing Filter below Transform, Join, GroupBy, 
Co-group, Sort, and Merge expressions.

>> Most of the modified files involve propagating the mapping table that maps 
the output columns of an expression to the input columns.

After the review, I'll merge this branch into:
/trunk

Original issue reported on code.google.com by myas...@gmail.com on 9 Jun 2010 at 3:17

GoogleCodeExporter commented 8 years ago

Original comment by vuk.erce...@gmail.com on 25 Sep 2010 at 6:52