alguidelines/content/BCBestPractices/Performance/DeleteAll/index.md

+++ title = "DeleteAll" weight = 1180 +++

<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

    EmptyTableWLD.SetRange(Code, 'AJ');
    EmptyTableWLD.DeleteAll(true);

Good code

    EmptyTableWLD.SetRange(Code, 'AJ');
    if not EmptyTableWLD.IsEmpty() then
        EmptyTableWLD.DeleteAll(true);

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