This lists databases:

```sql
SELECT datname FROM pg_database;
```

These list databases in detail:

```lang-none
\list
```

```lang-none
\l
```

These list databases in more detail:

```lang-none
\list+
```

```lang-none
\l+
```

This lists the tables of all databases:

```sql
SELECT table_schema, table_name FROM information_schema.tables;
```

These list the tables of the current database:

```lang-none
\dt
```

```lang-none
\dt+
```