When you run a query against a database server, it returns a response to the client. There are three types of server response to an SQL query:
Tabular data is displayed in the data editor. Status messages and errors are logged to Output window. Errors are not only logged to Output window they are also shown in Error List window.
Following image represents general view of Output window.
Depending on the product the Output window appearance may vary.
The window can contains up to four output panes (depending on the specific product):
As you can see from the above screen-shot, server errors are also logged to Output window. And you can navigate to the place of an error by double-click of from the shortcut menu.
You can search text in Output window. To find specific text:
When something goes wrong, typically you see an error. If this is a user or database server error, such as mistyped query, in most cases you will see it in Error List window.
Here is an example of an error displayed in the Error List.
Error List shows not only errors, but also warnings and informational messages which require user attention. Warning is in essence a non-blocking error. And informational message is just a user notification.
You can filter messages by type using appropriate buttons on the toolbar of the Error List window.
You can navigate to the error location by double-clicking it in the list or by selecting Go to Error from the shortcut menu.
Error List aggregates all error messages in the application. And if you have multiple open documents with errors, the error processing can quickly become awkward.
But the window has one more filter button - In Active Document. This button allows to view only those errors that are located in current document window.