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docs(book): Small edits #4905

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Sep 14, 2024
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docs(book): Small edits #4905

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fix(book): Small edits
corneliusroemer Sep 14, 2024
c69c620
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Sep 14, 2024
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6 changes: 3 additions & 3 deletions web/book/src/tutorial/relations.md
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Expand Up @@ -77,8 +77,8 @@ those columns named in the tuple.

### `derive` transform

To add columns to a relation, we can use `derive` function. Let's define a new
column for Value Added Tax, set at 19% of the invoice total.
To add columns to a relation, we can use the `derive` function. Let's define a
new column for Value Added Tax, set at 19% of the invoice total.

```prql no-eval
from invoices
Expand Down Expand Up @@ -123,7 +123,7 @@ In the example above, the alias `inv` represents the `invoices` relation and
PRQL manipulates relations (tables) of data. The `derive`, `select`, and `join`
transforms change the number of columns in a table. The first two never affect
the number of rows in a table. `join` may change the number of rows, depending
on the variation chosen.
on the chosen type of join.

This final example combines the above into a single query. It illustrates _a
pipeline_ - the fundamental basis of PRQL. We simply add new lines (transforms)
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