options dialog: Toolbar tab

Select one of the following options to set the behavior of the Execute toolbar button:

Execute all statements Executes all text in the SQL Statements pane. this is the default. You can also perform this operation by pressing F5 or choosing SQL | Execute.
Execute selected statements Executes the text that is selected in the SQL Statements pane. If no text is selected, all of the statements are executed. You can also perform this operation by pressing F9 or choosing SQL | Execute Selection.