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SQL: Introduce support for NULL values (#34573) #34640

Merged
merged 1 commit into from Oct 19, 2018
Merged

SQL: Introduce support for NULL values (#34573) #34640

merged 1 commit into from Oct 19, 2018

Commits on Oct 19, 2018

  1. SQL: Introduce support for NULL values (elastic#34573) 

    Make SQL aware of missing and/or unmapped fields treating them as NULL
Make _all_ functions and operators null-safe aware, including when used
in filtering or sorting contexts
Add missing and null-safe doc value extractor
Modify dataset to have null fields spread around (in groups of 10)
Enforce missing last and unmapped_type inside sorting
Consolidate Predicate templating and declaration
Add support for Like/RLike in scripting
Generalize NULLS LAST/FIRST
Introduce early schema declaration for CSV spec tests: to keep the doc
snippets in place (introduce schema:: prefix for declaration)
upfront.

Fix elastic#32079

(cherry picked from commit 52104aa)
    @costin
    costin committed Oct 19, 2018
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