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Add REGEXP_LIKE, fix bugs in REGEXP_EXTRACT. (#9893 )

* Add REGEXP_LIKE, fix empty-pattern bug in REGEXP_EXTRACT.

- Add REGEXP_LIKE function that returns a boolean, and is useful in
  WHERE clauses.
- Fix REGEXP_EXTRACT return type (should be nullable; causes incorrect
  filter elision).
- Fix REGEXP_EXTRACT behavior for empty patterns: should always match
  (previously, they threw errors).
- Improve error behavior when REGEXP_EXTRACT and REGEXP_LIKE are passed
  non-literal patterns.
- Improve documentation of REGEXP_EXTRACT.

* Changes based on PR review.

* Fix arg check.

* Important fixes!

* Add speller.

* wip

* Additional tests.

* Fix up tests.

* Add validation error tests.

* Additional tests.

* Remove useless call.

2020-06-03 14:31:37 -07:00

core

De-incubation cleanup in code, docs, packaging (#9108 )

2020-01-03 12:33:19 -05:00

i18n

Druid Quickstart refactor and update (#9766 )

2020-04-30 12:07:28 -07:00

pages/en

Docusaurus build framework + ingestion doc refresh. (#8311 )

2019-08-20 21:48:59 -07:00

script

Graduation update for ASF release process guide and download links (#9126 )