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| author | lambda-delta <[email protected]> | 2025-08-26 12:24:51 +0300 |
|---|---|---|
| committer | lambda-delta <[email protected]> | 2025-08-26 13:26:21 +0300 |
| commit | 5302ae7ceeccd12004b7b30551baa7fb960d8f0e (patch) | |
| tree | 1e087a264df9c83f9668ea70f3fcf8c72a41c941 /yql/essentials/docs/en/syntax | |
| parent | 285d3d7ff9007f76a37f83df4d04a15b11d0c4fc (diff) | |
YQL-20253: Support `FLATTEN [OPTIONAL] BY` for any data type
Support `FLATTEN [OPTIONAL] BY` for any data type
commit_hash:6fb221fadf29d1dcc7ea4590a21c115fc506aa51
Diffstat (limited to 'yql/essentials/docs/en/syntax')
| -rw-r--r-- | yql/essentials/docs/en/syntax/flatten.md | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/yql/essentials/docs/en/syntax/flatten.md b/yql/essentials/docs/en/syntax/flatten.md index 0dd81ceed4c..163f0e55273 100644 --- a/yql/essentials/docs/en/syntax/flatten.md +++ b/yql/essentials/docs/en/syntax/flatten.md @@ -82,6 +82,8 @@ To specify the type of container to convert to, you can use: * `FLATTEN OPTIONAL BY` To filter the `NULL` values without serialization, specify the operation by using `FLATTEN OPTIONAL BY`. + + Since YQL [2025.03](../changelog/2025.03.md), this expression also accepts any non-Optional type (in particular, application on the `NullType` returns `EmptyList`, Postgres types are filtered by non-`NULL`, and other data types are mapped as is). #### Examples |