Disable automatic copying to clipboard

When I select text in the SQL query tab, it automatically copies to the clipboard, how do I disable it

No, that's not the case. HeidiSQL does not "auto-copy" selected text. Where did you see that? And is there perhaps some additional app on your system doing that?

Thank you for your tips，Not a problem with HeidiSQL，I found the auto-copy app

Out of curiosity: what's the name of that app?