如何返回获得的所有积分的列表以及添加/删除角色

Question

I've built a reaction based voting system which allows for users in my discord server to vote for someone, and based on the vote they are given they will get x amount of points EG 5 star rating gives 10 points.

All these figures are then added to a SQL-Server Database along with the person who voted for them and the DateTime the vote was cast.

What i am now trying to figure out is how can i add/remove roles for people who are being voted for. For example once a member recieves 100 points they are a assigned X role and if they drop below 100 remove the role is removed.

I'm struggling to figure out how i would write the SQL Function to get this information - i think i'll be confident enough to write the c# to accompany this.

Fields in my Table are

• Sherpa - Person who has been voted for
• VotedBy - Person who voted
• Date - Date the vote was cast
• Points - The amount of points awarded

Example of how the data is being stored to the Database

var message = (RestUserMessage) await channel.GetMessageAsync(SherpaReact.CatchReaction);
if (reaction.MessageId == SherpaReact.CatchReaction && reaction.UserId == SherpaReact.UserReaction) {
 SqlCommand command;
 command = new SqlCommand($ @ "EXECUTE dbo.AddSherpa @Points = @@Points, @Sherpa = @@Sherpa, @VotedBy = @@VotedBy, @Date = @@Date", StaticObjects._connection);

 if (reaction.Emote.Name == "1\u20e3") {
  await message.DeleteAsync();

  SqlParameter PointsParam = new SqlParameter {
   ParameterName = "@@Points",
    Value = (long) - 8
  };
  command.Parameters.Add(PointsParam);

  SqlParameter SherpaParam = new SqlParameter {
   ParameterName = "@@Sherpa",
    Value = (long) SherpaReact.Sherpa.Id
  };
  command.Parameters.Add(SherpaParam);

  SqlParameter VotedByParam = new SqlParameter {
   ParameterName = "@@VotedBy",
    Value = (long) SherpaReact.UserReaction
  };
  command.Parameters.Add(VotedByParam);

  SqlParameter DateParam = new SqlParameter {
   ParameterName = "@@Date",
    Value = DateTime.Now
  };
  command.Parameters.Add(DateParam);
  command.ExecuteNonQuery();

  var sherpa = SherpaReact.Sherpa.Nickname.Contains("(") ? SherpaReact.Sherpa.Nickname.Substring(0, SherpaReact.Sherpa.Nickname.IndexOf("(") - 1) : SherpaReact.Sherpa.Nickname;
  EmbedBuilder eb = new EmbedBuilder() {
   Title = "Vote Accepted",
    Description = $ "Thanks for voting for {sherpa}",
    Color = new Color(127, 127, 0)
  };
  IUserMessage msg = await channel.SendMessageAsync(embed: eb.Build());
  _ = Task.Run(() => DeleteMessagesAsync(msg));
 }

I've have made a simple function just to return a SUM of all the points that a Sherpa has received so far, but i just can't get my head around how to do this next bit if anyone can point me in the right direction would be appreciated.

CREATE FUNCTION [dbo].[GetSherpaPoints]
(
)
RETURNS @returntable TABLE
(
    Sherpa BIGINT,
    Points BIGINT
)
AS
BEGIN

    INSERT @returntable
    SELECT
        [Sherpa],
        SUM([Points]) AS [PointsSum]
    FROM
        [dbo].[SherpaVotes]
    WHERE
        [Sherpa] = Sherpa
    GROUP BY
        [Sherpa]
    ORDER BY
        [PointsSum] DESC
    RETURN
END

Answer 1

You could do something with a case :

SELECT
   Sherpa,
   CASE 
     WHEN Points < 100 THEN 'NoRole'
     WHEN Points >= 100 AND Points < 200 THEN 'Role1'
     WHEN Points >= 200 AND Points < 300 THEN 'Role2' -- And so on...
     END as Role
FROM @Results;

For as small number of role. If you have a lot you should create a Role table with min and max values of point and compute it accordingly.

EDIT: This should work as per your comment

CREATE FUNCTION [dbo].[GetSherpaPoints]
(
)
RETURNS @returntable TABLE
(
    Sherpa BIGINT,
    Role nvarchar(20)
)
AS
BEGIN

    INSERT @returntable
    SELECT
        [Sherpa],
         CASE 
             WHEN SUM(Points) < 100 THEN 'NoRole'
             WHEN SUM(Points) >= 100 AND SUM(Points) < 200 THEN 'Role1'
             WHEN SUM(Points) >= 200 AND SUM(Points) < 300 THEN 'Role2' -- And so on...
        END as Role
    FROM
        [dbo].[SherpaVotes]
    WHERE
        [Sherpa] = Sherpa
    GROUP BY
        [Sherpa]
    ORDER BY
        [PointsSum] DESC
    RETURN
END