Shulou(Shulou.com)05/31 Report--

In this issue, Xiaobian will bring you about how to learn and use MSSQL Server cursors. The article is rich in content and analyzes and narrates from a professional perspective. After reading this article, I hope you can gain something.

To be honest, using MS SQL Server for so long, cursors have not been used. Similar functions were previously implemented using WHILE loops plus temporary tables. Just now there is a reference to the online sample exercise to write about. Understand cursor concepts and syntax.

In the following code example,

First, declare that you want to use variables in cursors, that is, temporarily store data for processing fields.

1. Declare a cursor and SELECT the dataset to be processed.

2. Open cursor (line #8).

3. fetches FETCH NEXT data from the cursor to assign values to variables.

4. Loop @@FETCH_STATUS = 0 condition.

5. In the loop block, you can process the first pen of the recording logic again. In this case PRINT.

6. Logic processing is complete and FETCH NEXT data is taken from the cursor again to assign values to variables. (Same as above 4).

7. Close the cursor.

8. Delete and release the cursor.

The above is how to use MSSQL Server cursors for everyone to share, if there is a similar doubt, you may wish to refer to the above analysis to understand. If you want to know more about it, please pay attention to the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.