> ## Documentation Index
> Fetch the complete documentation index at: https://ancplua.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# AL0123 - Conflicting [DuckDbColumn] ordinal values

> Multiple properties in a [DuckDbTable] type have the same Ordinal value in their [DuckDbColumn] attribute

Source: [AL0123DuckDbColumnConflictingOrdinalAnalyzer.cs](https://github.com/ANcpLua/ANcpLua.Analyzers/blob/main/src/ANcpLua.Analyzers/Analyzers/AL0123DuckDbColumnConflictingOrdinalAnalyzer.cs)

## Description

Multiple properties in a \[DuckDbTable] type have the same Ordinal value in their \[DuckDbColumn] attribute. Each column must have a unique ordinal to ensure deterministic column ordering in generated SQL.

## Properties

* **Category**: Design
* **Severity**: Warning
* **Enabled by default**: True
* **Code fix available**: False

## Configuration

```editorconfig theme={null}
dotnet_diagnostic.AL0123.severity = warning
```