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til/postgres/create-database-uses-template1.md

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# Create Database Uses Template1
Whenever you use the [`create
database`](https://www.postgresql.org/docs/current/sql-createdatabase.html)
query, unless otherwise specified, it will create it by cloning `template1` by
default.
You can view, inspect, and even modify this database template by connecting to
it.
```sql
\c template1
```
Every Postgres cluster starts with two templates.
```sql
select datname from pg_database where datistemplate = true;
datname
-----------
template1
template0
(2 rows)
```
You cannot however connect to and modify `template0`. It is a fallback clone of
`template1` that you can utilize if you ever modify `template1` and need to
restore it.
[source](https://supabase.io/blog/2020/07/09/postgresql-templates/)