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Commit Graph

Author	SHA1	Message	Date
Gian Merlino	e86859b228	SQL support for nested groupBys. (#3806 ) * SQL support for nested groupBys. Allows, for example, doing exact count distinct by writing: SELECT COUNT() FROM (SELECT DISTINCT col FROM druid.foo) Contrast with approximate count distinct, which is: SELECT COUNT(DISTINCT col) FROM druid.foo Add deeply-nested groupBy docs, tests, and maxQueryCount config. * Extract magic constants into statics. * Rework rules to put preconditions in the "matches" method.	2017-01-11 18:32:53 -08:00
Gian Merlino	dd63f54325	Built-in SQL. (#3682 )	2016-12-16 17:15:59 -08:00
fjy	42ac41d55e	add more docs based on proposed wishlist	2015-07-02 17:46:08 -07:00

Author

SHA1

Message

Date

Gian Merlino

e86859b228

SQL support for nested groupBys. (#3806 )

* SQL support for nested groupBys.

Allows, for example, doing exact count distinct by writing:

  SELECT COUNT(*) FROM (SELECT DISTINCT col FROM druid.foo)

Contrast with approximate count distinct, which is:

  SELECT COUNT(DISTINCT col) FROM druid.foo

* Add deeply-nested groupBy docs, tests, and maxQueryCount config.

* Extract magic constants into statics.

* Rework rules to put preconditions in the "matches" method.

2017-01-11 18:32:53 -08:00

Gian Merlino

dd63f54325

Built-in SQL. (#3682 )

2016-12-16 17:15:59 -08:00

fjy

42ac41d55e

add more docs based on proposed wishlist

2015-07-02 17:46:08 -07:00

3 Commits