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[Documentation] Adding link to Postgres upgrade article #11257

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Feb 15, 2024
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[Documentation] Adding link to Postgres upgrade article #11257

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[Documentation] Adding link to Postgres upgrade article
ThomasLandauer Feb 13, 2024
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Update UPGRADE.md
ThomasLandauer Feb 13, 2024
e8fd3df
Update UPGRADE.md
ThomasLandauer Feb 13, 2024
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6 changes: 3 additions & 3 deletions UPGRADE.md
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Expand Up @@ -13,9 +13,9 @@ so `$targetEntity` is a first argument now. This change affects only non-named a

When using the `AUTO` strategy to let Doctrine determine the identity generation mechanism for
an entity, and when using `doctrine/dbal` 4, PostgreSQL now uses `IDENTITY`
instead of `SEQUENCE`. When upgrading from ORM 2.x and preference is on keeping
the `SEQUENCE` based identity generation, then configure the ORM this way:

instead of `SEQUENCE` or `SERIAL`.
* If you want to upgrade your existing tables to identity columns, you will need to follow [migration to identity columns on PostgreSQL](https://www.doctrine-project.org/projects/doctrine-dbal/en/4.0/how-to/postgresql-identity-migration.html)
* If you want to keep using SQL sequences, you need to configure the ORM this way:
```php
use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
use Doctrine\ORM\Configuration;
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