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add note about selecing specific columns

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Johann150 2022-09-11 22:01:42 +02:00
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CONTRIBUTING.md
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@ -270,6 +270,12 @@ const users = userIds.length > 0 ? await Users.find({
}) : [];
```
### typeorm: selecting only specific columns
If you select specific columns of a table only, you will probably not be able to use the usual `getOne`, `getMany` etc.
Instead you might want to try using `getRawOne` and `getRawMany`.
For that, you may also want to add aliases to the columns you select, which can be done using the second parameter of `select` or `addSelect`.
### Array indexing in SQL
PostgreSQL array indices **start at 1**.