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Add docs for WITH SESSION #24917

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mosabua merged 1 commit into from
Feb 6, 2025
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Add docs for WITH SESSION #24917

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4 changes: 2 additions & 2 deletions docs/src/main/sphinx/release/release-470.md
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Expand Up @@ -4,8 +4,8 @@

* Add [](/connector/duckdb). ({issue}`18031`)
* Add [](/connector/loki). ({issue}`23053`)
* Add support for `WITH SESSION` to set per-query session properties with
`SELECT` queries. ({issue}`24889`)
* Add support for the [](select-with-session) to set per-query session
properties with `SELECT` queries. ({issue}`24889`)
* Improve compatibility of fault-tolerant exchange storage with S3-compliant
object stores. ({issue}`24822`)
* Allow skipping directory schema validation to improve compatibility of
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25 changes: 25 additions & 0 deletions docs/src/main/sphinx/sql/select.md
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Expand Up @@ -69,6 +69,31 @@ ROLLUP ( column [, ...] )

Retrieve rows from zero or more tables.

(select-with-session)=
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@findinpath findinpath Feb 14, 2025

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Can we add a reference here from https://trino.io/docs/current/sql/set-session.html ?

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@mosabua mosabua Feb 14, 2025 •
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Sure .. send a PR or maybe someone from the docs team can help.. probably worth a sentence in there and a link in See also at the bottom.

## WITH SESSION clause

The `WITH SESSION` clause allows you to [set session and catalog session
property values](/sql/set-session) applicable for the processing of the current
SELECT statement only. The defined values override any other configuration and
session property settings. Multiple properties are separated by commas.

The following example overrides the global configuration property
`query.max-execution-time` with the session property `query_max_execution_time`
to reduce the time to `2h`. It also overrides the catalog property
`iceberg.query-partition-filter-required` from the `example` catalog using
[](/connector/iceberg) setting the catalog session property
`query_partition_filter_required` to `true`:

```sql
WITH
SESSION
query_max_execution_time='2h',
example.query_partition_filter_required=true
SELECT *
FROM example.default.thetable
LIMIT 100;
```

## WITH FUNCTION clause

The `WITH FUNCTION` clause allows you to define a list of [](udf-inline) that
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