Everytime, when I open mysql-workbench,it takes a long time to load my query records like this. 
I want to delete them completely.But I can't find the way. Can someone help me?
1 Answer
Close them. Right-click on one of the tabs and choose "Close Other Tabs" from the context-menu. The reason they show up is because you have the "Save snapshot of open editors on close" preference enabled. You might want to disable that, or use it with care. For additional information about this setting, see the related documentation here.