Here is the SQL query you need to write to get the desired result:

```sql
SELECT COUNT(*) AS payment_count
FROM bill
JOIN meter ON bill.meter_id = meter.id
JOIN building ON meter.building_id = building.id
JOIN building_type ON building.building_type_id = building_type.id
JOIN electricity_connection_type ON building.electricity_connection_type_id = electricity_connection_type.id
WHERE bill.is_payed = 1 AND electricity_connection_type.connection_type = 'Commercial';
```

This query works as follows:

1. It starts by selecting all records from the `bill` table.
2. It then joins the `meter` table on the condition that the `meter_id` in the `bill` table matches the `id` in the `meter` table.
3. It does the same for the `building`, `building_type`, and `electricity_connection_type` tables.
4. Finally, it filters the results to only include records where `is_payed` is 1 (meaning the bill has been paid) and the `connection_type` is 'Commercial'.
5. The `COUNT(*)` function is used to count the number of records that meet these conditions, and this count is given the alias `payment_count`.

Question

Here is the SQL query you need to write to get the desired result:

```sql
SELECT COUNT(*) AS payment_count
FROM bill
JOIN meter ON bill.meter_id = meter.id
JOIN building ON meter.building_id = building.id
JOIN building_type ON building.building_type_id = building_type.id
JOIN electricity_connection_type ON building.electricity_connection_type_id = electricity_connection_type.id
WHERE bill.is_payed = 1 AND electricity_connection_type.connection_type = 'Commercial';
```

This query works as follows:

1. It starts by selecting all records from the `bill` table.
2. It then joins the `meter` table on the condition that the `meter_id` in the `bill` table matches the `id` in the `meter` table.
3. It does the same for the `building`, `building_type`, and `electricity_connection_type` tables.
4. Finally, it filters the results to only include records where `is_payed` is 1 (meaning the bill has been paid) and the `connection_type` is 'Commercial'.
5. The `COUNT(*)` function is used to count the number of records that meet these conditions, and this count is given the alias `payment_count`.

Knowee AI · Accepted Answer

Here is the SQL query you need to write to get the desired result:

```sql
SELECT COUNT(*) AS payment_count
FROM bill
JOIN meter ON bill.meter_id = meter.id
JOIN building ON meter.building_id = building.id
JOIN building_type ON building.building_type_id = building_type.id
JOIN electricity_connection_type ON building.electricity_connection_type_id = electricity_connection_type.id
WHERE bill.is_payed = 1 AND electricity_connection_type.connection_type = 'Commercial';
```

This query works as follows:

1. It starts by selecting all records from the `bill` table.
2. It then joins the `meter` table on the condition that the `meter_id` in the `bill` table matches the `id` in the `meter` table.
3. It does the same for the `building`, `building_type`, and `electricity_connection_type` tables.
4. Finally, it filters the results to only include records where `is_payed` is 1 (meaning the bill has been paid) and the `connection_type` is 'Commercial'.
5. The `COUNT(*)` function is used to count the number of records that meet these conditions, and this count is given the alias `payment_count`.

Question

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