qgis/QGIS-Documentation

Port 'Execute SQL' algorithm and widget wrapper to c++ (Request in QGIS)

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#11,170 opened on Aug 5, 2026

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Description

Request for documentation

From pull request qgis/QGIS#66935 Author: @nyalldawson QGIS version: 4.4

**Port 'Execute SQL' algorithm and widget wrapper to c++ **

PR Description:

Description

The c++ algorithm is close to a direct port of the Python one, with the addition of improved help strings and per-parameter help, and some extra feedback (showing the actual SQL to be run).

The widget wrapper is considerably simplified from the Python version. The python version was needlessly complex, as a result of API introduced in the original PR which duplicated existing generic functionality from the modeler API. I've removed that, and deprecated the duplicate API.

There's also new tests for the widget wrapper (none were present before), and a new test for the algorithm itself.

AI tool usage

  • AI tool(s): Gemini was used to do the initial algorithm port + write the new help strings, revised by hand by myself.

Commits tagged with [need-docs] or [FEATURE]

Contributor guide

Research direction
Review the linked pull request QGIS/QGIS#66935, focusing on the 'Execute SQL' algorithm and widget wrapper. Study the existing QGIS documentation for processing algorithms and widgets to follow the established structure. Check the QGIS Documentation guidelines for contributing, and identify where to add the new documentation.
Tech stack
cpppythonsql
Domain
desktopdatabasebackendfrontend
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitQGISPython
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80