root
/
elasticsearch
mirror of https://github.com/elastic/elasticsearch.git
1
0
Fork 0
Code Issues Actions 1 Packages Projects Releases Wiki Activity
elasticsearch/docs/reference/esql/functions/description/mv_slice.asciidoc

10 lines
519 B
Plaintext
Raw Normal View History

ESQL: Generate a few more docs (#106577) And improve the error message on csv test failures.
2024-03-21 22:51:35 +08:00
// This is generated by ESQL's AbstractFunctionTestCase. Do no edit it. See ../README.md for how to regenerate it.
ESQL: Generate more docs (#106367) This modifies the ESQL test infrastructure to generate more of the documentation for functions. It generates the *Description* section, the *Examples* section, and the *Parameters* section as separate files so we can use them as needed. It also generates a `layout` file that's just a guess as to how to render the whole thing. In some cases it'll work and we can use that instead of hand maintaining a "top level" description file for the function. Most newly generated files are unused. We have to chose to pick them up by replacing the sections we were manually maintaining with an include of the generated section. Or by replacing the entire hand maintained file with the generated top level file. Relates to #104247
2024-03-20 03:40:13 +08:00
*Description*
ESQL: Document MV_SLICE limitations (#114162) `MV_SLICE` is useful, but loading values from lucene frequently sorts them so `MV_SLICE` is not as useful as you think it is. It's mostly for after, say, a `SPLIT`. This documents that and adds a link to the section on multivalues. It also moves similar docs to a separate paragraph in the docs for easier reading.
2024-10-09 02:04:36 +08:00
Returns a subset of the multivalued field using the start and end index values. This is most useful when reading from a function that emits multivalued columns in a known order like <<esql-split>> or <<esql-mv_sort>>.
The order that <<esql-multivalued-fields, multivalued fields>> are read from
underlying storage is not guaranteed. It is *frequently* ascending, but don't
rely on that.