To modify the existing view "citymatch" to display customer IDs and salesman IDs, you would use the ALTER VIEW statement in SQL. However, the ALTER VIEW statement does not allow you to change the name or add columns to a view. Instead, you would need to drop the existing view and create a new one with the desired specifications.

Here is how you can do it:

Step 1: Drop the existing view
```sql
DROP VIEW citymatch;
```

Step 2: Create a new view with the desired name and columns
```sql
CREATE VIEW citymatch(customer_id, salesman_id) AS
SELECT customer.customer_id, salesman.salesman_id
FROM customer
JOIN salesman ON customer.city = salesman.city;
```

This new view named "citymatch" will now display the customer IDs and salesman IDs where at least one customer in the city is served by a salesperson in the same city.

Please note that the actual SQL syntax might vary depending on the SQL dialect you are using. The above example is written in standard SQL.

Question

To modify the existing view "citymatch" to display customer IDs and salesman IDs, you would use the ALTER VIEW statement in SQL. However, the ALTER VIEW statement does not allow you to change the name or add columns to a view. Instead, you would need to drop the existing view and create a new one with the desired specifications.

Here is how you can do it:

Step 1: Drop the existing view
```sql
DROP VIEW citymatch;
```

Step 2: Create a new view with the desired name and columns
```sql
CREATE VIEW citymatch(customer_id, salesman_id) AS
SELECT customer.customer_id, salesman.salesman_id
FROM customer
JOIN salesman ON customer.city = salesman.city;
```

This new view named "citymatch" will now display the customer IDs and salesman IDs where at least one customer in the city is served by a salesperson in the same city.

Please note that the actual SQL syntax might vary depending on the SQL dialect you are using. The above example is written in standard SQL.

Knowee AI · Accepted Answer

To modify the existing view "citymatch" to display customer IDs and salesman IDs, you would use the ALTER VIEW statement in SQL. However, the ALTER VIEW statement does not allow you to change the name or add columns to a view. Instead, you would need to drop the existing view and create a new one with the desired specifications.

Here is how you can do it:

Step 1: Drop the existing view
```sql
DROP VIEW citymatch;
```

Step 2: Create a new view with the desired name and columns
```sql
CREATE VIEW citymatch(customer_id, salesman_id) AS
SELECT customer.customer_id, salesman.salesman_id
FROM customer
JOIN salesman ON customer.city = salesman.city;
```

This new view named "citymatch" will now display the customer IDs and salesman IDs where at least one customer in the city is served by a salesperson in the same city.

Please note that the actual SQL syntax might vary depending on the SQL dialect you are using. The above example is written in standard SQL.

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