commit | f115833b9ff97a178febf3753f516888a3161af7 | [log] [tgz] |
---|---|---|
author | JaeHwa Jung <blrunner@apache.org> | Tue Mar 08 16:40:15 2016 +0900 |
committer | JaeHwa Jung <blrunner@apache.org> | Tue Mar 08 16:40:15 2016 +0900 |
tree | 027ec17796d4918118c06085ad17b5a6f29aed7f | |
parent | 6942fa39900bfd6c41ffb305844101ab9ea4c933 [diff] |
TAJO-1793: result row count unmatched for UNION ALL. Closes #965
Tajo is a relational and distributed data warehouse system for Hadoop. Tajo is designed for low-latency and scalable ad-hoc queries, online aggregation and ETL on large-data sets by leveraging advanced database techniques. It supports SQL standards. It has its own query engine which allows direct control of distributed execution and data flow. As a result, Tajo has a variety of query evaluation strategies and more optimization opportunities. In addition, Tajo will have a native columnar execution and and its optimizer.
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