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sql #25

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CREATE TABLE public.people
(
id integer primary key,
"First Name" text,

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колонки в lower kebab_case

```

8. Create a query that would select the IDs of the living people:

```postgresql
... here goes your SQL ...
SELECT id FROM people WHERE "Year of Death" ISNULL;

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ISNULL функція, а тут потрібен IS NULL

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