SQL Query pane - confusion between selecting query to run and selecting lines to copy

When working in the SQL Query pane, one can click on a query and then run it. It is selected in dark gray. However, if you then hit Command-C, you realize you didn't copy the whole query, just whatever was selected before regardless of what looks selected. Then you use the mouse or keyboard to select some lines and realize that is highlighted in blue.

How about unifying the two selectors so that if a query is double clicked to select to run, it is also selected for copy/paste?

Start in the SQL Query pane and trace how double-click selection for execution differs from the text selection used by Command-C. Unify those selections so the query chosen to run is also the text copied, while preserving explicit line selection; done means the visible selection and copied content agree.

Written by the indexing model from the issue text.