Date conversion

hello everyone
I am a metabase rookie,%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_20210331090637 .
As shown in the figure, how can I change the date display mode of year / month / day to statistics by month? Thank you for your help

Hi @ren
I don't understand what you're trying to do, but it sounds like you want to group by month - you can do that in the sidebar, when clicking Summarize. Have a look at the documentation: