alguidelines/content/BCBestPractices/Performance/DeleteAll/index.md
2022-02-10 23:55:30 +01:00

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title = "DeleteAll"
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<_Created by waldo, Described by waldo_\>
## Description
When you perform a "DeleteAll" when there is nothing to delete, it will still perform a lock. When you for example perform a DeleteAll on an empty table, it will result in a table lock.
Therefore it's good practice to always check if the table is empty when performing a DeleteAll.
## Bad code
```al
EmptyTableWLD.SetRange(Code, 'AJ');
EmptyTableWLD.DeleteAll(true);
```
## Good code
```al
EmptyTableWLD.SetRange(Code, 'AJ');
if not EmptyTableWLD.IsEmpty() then
EmptyTableWLD.DeleteAll(true);
```
## Discussions
You can discuss the guideline [here](https://github.com/microsoft/alguidelines/discussions/107)
You can find discussions on all "Best Practices" [here](https://github.com/microsoft/alguidelines/discussions/categories/bc-best-practices).
If you don't find the discussion of this guideline, please feel free to create a new one with the same title as this article.