How to create a combination index in Navicat?

In Navicat, creating a composite index can be done by following these steps:

1. Open Navicat and connect to the appropriate database server.
2. Select the table in the database for which you want to create an index.
3. Right-click on the table and select the “Design Table” option.
4. Choose the column you want to create an index for in the “Design Table” window.
5. Select the “Index” tab in the Properties pane.
6. Click on the “Add” button to add an index.
7. In the “Add Index” dialog box, select the “Combined Index” option.
8. Choose the columns to include in the composite index and specify a name for the composite index.
9. Click the “confirm” button to create a composite index.
10. Click on the “Save” button to save the changes and close the “Design Table” window.

After completing the above steps, the composite index will be successfully created. A composite index can help optimize query performance, especially when using multiple columns in a query simultaneously.