Create a procedure that should contain a cursor that holds the country ID and the counames of the country table. It should provide users the facility to display the countryand the country names of the first nine records from the country table.
时间: 2023-07-02 18:14:45 浏览: 87
Here's an example of a stored procedure that uses a cursor to display the country ID and name for the first nine records in the country table:
```
CREATE PROCEDURE display_countries
AS
BEGIN
DECLARE @country_id INT
DECLARE @country_name NVARCHAR(50)
DECLARE @counter INT = 1
DECLARE country_cursor CURSOR FOR
SELECT country_id, country_name
FROM country
OPEN country_cursor
FETCH NEXT FROM country_cursor INTO @country_id, @country_name
WHILE @@FETCH_STATUS = 0 AND @counter <= 9
BEGIN
PRINT 'Country ID: ' + CAST(@country_id AS VARCHAR(10)) + ', Country Name: ' + @country_name
SET @counter = @counter + 1
FETCH NEXT FROM country_cursor INTO @country_id, @country_name
END
CLOSE country_cursor
DEALLOCATE country_cursor
END
```
In this stored procedure, we declare variables to hold the country ID and name, as well as a counter to keep track of the number of records we've displayed. We then declare a cursor that selects the country ID and name from the country table.
We open the cursor and fetch the first record into our variables. We then loop through the cursor while the fetch status is 0 (i.e., there are more records to fetch) and our counter is less than or equal to 9. For each record, we print out the country ID and name, increment our counter, and fetch the next record.
Finally, we close and deallocate the cursor to free up resources. Users can execute this stored procedure to display the first nine countries and their names from the country table.
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