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formatted nav patterns 2 to 4

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christianbraeunlich 2022-02-05 19:44:44 +01:00
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content/NAVPatterns/2-anti-patterns/nav-upgrade/index.md
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@ -18,8 +18,6 @@ If the table is empty, it means that either the upgrade has run, or there was no
**Solution:** if using an upgrade table, always validate that the table contains data before doing anything.
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### Upgrade code, can it be rerun safely?
**Problem**: if the upgrade code is not written in a way that makes it runnable twice ([idempotent][anchor1]), then several failures can happen, including something as critical as data corruption.