---
name: "RDF::Query::Algebra::Update"
section: "3pm"
platform: "linux"
package: "librdf-query-perl"
version: "2.919-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/RDF::Query::Algebra::Update"
---

# RDF::Query::Algebra::Update(3pm)

Algebra class for UPDATE operations

## NAME

RDF::Query::Algebra::Update - Algebra class for UPDATE operations

## VERSION

This document describes RDF::Query::Algebra::Update version 2.919.

## METHODS

Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.

- "new ( $delete\_template, $insert\_template, $pattern, \\%dataset, $data\_only\_flag )"

  Returns a new UPDATE structure.

- "construct\_args"

  Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.

- "sse"

  Returns the SSE string for this algebra expression.

- "as\_sparql"

  Returns the SPARQL string for this algebra expression.

- "referenced\_blanks"

  Returns a list of the blank node names used in this algebra expression.

- "referenced\_variables"

  - "delete\_template"

  - "insert\_template"

  - "pattern"

  - "dataset"

  - "data\_only"

  - "check\_duplicate\_blanks"

  Returns true if blank nodes respect the SPARQL rule of no blank-label re-use across BGPs, otherwise throws a RDF::Query::Error::QueryPatternError exception.

## AUTHOR

```
 Gregory Todd Williams <gwilliams@cpan.org>
```