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Fix typos

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mine-cetinkaya-rundel 2023-05-25 21:30:48 -04:00
parent 76ce17693e
commit c8b6ec6d96
1 changed files with 2 additions and 2 deletions
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databases.qmd
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@ -264,7 +264,7 @@ There are five important clauses: `SELECT`, `FROM`, `WHERE`, `ORDER BY`, and `GR
:
[^databases-4]: Confusingly, depending on the context, `SELECT` is either a statement or a clause.
To avoid this confusion, we'll generally use query instead of `SELECT` statement.
To avoid this confusion, we'll generally use `SELECT` query instead of `SELECT` statement.
[^databases-5]: Ok, technically, only the `SELECT` is required, since you can write queries like `SELECT 1+1` to perform basic calculations.
But if you want to work with data (as you always do!) you'll also need a `FROM` clause.
@ -597,7 +597,7 @@ flights |>
)
```
In SQL, the `GROUP BY` clause is used exclusively for summaries so here you can see that the grouping has moved to the `PARTITION BY` argument to `OVER`.
In SQL, the `GROUP BY` clause is used exclusively for summaries so here you can see that the grouping has moved from the `PARTITION BY` argument to `OVER`.
Window functions include all functions that look forward or backwards, like `lead()` and `lag()` which look at the "previous" or "next" value respectively: