Commit Graph

3 Commits

Author SHA1 Message Date
Andrei Stefan 09fa827adc
SQL: documentation improvements and updates (#36918)
* Added Limitations page
* Made the aggregations page follow the common template for functions
* Modified all tables to have the first row's cells content centered
* Polishing in other various sections
2018-12-21 23:25:54 +02:00
Costin Leau ac032a0b9d
SQL: Fix bug regarding histograms usage in scripting (#36866)
Allow scripts to correctly reference grouping functions
Fix bug in translation of date/time functions mixed with histograms.
Enhance Verifier to prevent histograms being nested inside other
 functions inside GROUP BY (as it implies double grouping)
Extend Histogram docs
2018-12-20 23:11:56 +02:00
Costin Leau 6ee6bb55e2
SQL: Introduce HISTOGRAM grouping function (#36510)
Introduce Histogram grouping function for bucketing/grouping data based
 on a given range. Both date and numeric histograms are supported using
 the appropriate range declaration (numbers vs intervals).

SELECT HISTOGRAM(number, 50) AS h FROM index GROUP BY h
SELECT HISTOGRAM(date, INTERVAL 1 YEAR) AS h FROM index GROUP BY h

In addition add multiply operator for Intervals
Add docs for intervals and histogram

Fix #36509
2018-12-14 18:20:37 +02:00