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Merge branch 'master' of https://github.com/BayoNet/ClickHouse

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BayoNet 2018-02-21 13:10:43 +03:00
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@ -39,7 +39,7 @@ We'll say that the following is true for the OLAP (online analytical processing)
- Data is updated in fairly large batches (> 1000 rows), not by single rows; or it is not updated at all.
- Data is added to the DB but is not modified.
- For reads, quite a large number of rows are extracted from the DB, but only a small subset of columns.
- Tables are "wide," meaning they contain a large number of columns.
- Tables are "wide", meaning they contain a large number of columns.
- Queries are relatively rare (usually hundreds of queries per server or less per second).
- For simple queries, latencies around 50 ms are allowed.
- Column values are fairly small: numbers and short strings (for example, 60 bytes per URL).