Re: [ADMIN] windown function count Unexpected results

thanks a lot，steven，david :-)

Hello,

     Official document in https://www.postgresql.org/docs/9.3/static/functions-window.html says so   :

An aggregate used with ORDER BY and the default window frame definition produces a "running sum" type of behavior, which may or may not be what's wanted. To obtain aggregation over the whole partition, omit ORDER BY or use ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING