使用来自另一个表的数据更新mysql表

Question

I would like to update my table called nfl_roster with weekly scores that I have imported into another table (currently called week7_stats for the week I am doing it for now). For example, in nfl_roster I have all of the players and then empty columns where I will input the scores as the week goes. Here's an example of what it looks like:

Name              week1_points week2_points ..... week7_points

A.J. Green            0             0                 0
Matthew Stafford      0             0                 0

Here is an example of the sheet where I have all of the scores for the players for week 7:

name                week7_points
Matthew Stafford        3.590
Blake Bortles           2.894

So I need to update nfl_roster with weekly scores from another table (in this case week7_stats) and have it UPDATE the score in that week with the column in the weekly table.

Answer 1

更新nfl_roster加入week7_stats ON nfl_roster.Name = week7_stats.name SET nfl_roster.week7_points = week7_stats.week7_points

Answer 2

Try this:

update nfl_roster 
set week7_points = (
     select week7_points 
     from week7_stats 
     where nfl_roster.Name = week7_points.name
)