Question

我正在尝试创建一个存储过程，该过程可以根据团队的ID自动填充团队中的玩家列表。我想要做的就是说每支球队有20名球员，他们的名字与球队名称相匹配，他们的姓氏应以“球员”开头，最后根据相关球队的数量结束。

    First Name                Surname   TeamID

    AFC Wimbledon             Player1   1

    AFC Wimbledon             Player2   1

    AFC Wimbledon             Player3   1

--All the way to 20 players     

    Angers                    Player1   2

我不知道如何做到这一点，需要很少的指导或代码示例，所以我可以看看它是如何完成的。我以为我可能需要一个OUTPUT来帮助解决这个问题，但我认为我的逻辑非常缺陷。以下是表格：队：

TeamID  TeamName
1        AFC Wimbledon
2        Angers
3        Ards

播放器（当前为空时需要将其插入：

PlayerID    FirstName   Surame  TeamID

以下是我的PROC：

CREATE PROCEDURE [dbo].[Player_Insert]

    @FirstName VARCHAR(25) OUTPUT,
    @Surname VARCHAR(25) OUTPUT,
    @TeamName VARCHAR(50)

AS
SET NOCOUNT ON
BEGIN

    DECLARE @TeamID INT, @CountPlayers INT

    SELECT @TeamID = TeamID FROM Team WHERE TeamName = @TeamName

    SELECT @CountPlayers = count(*) FROM Player WHERE TeamID = @TeamID

    IF @CountPlayers >= 20
    BEGIN
        RAISERROR('Reached the maximum limit of players for %s', 16, 1, @TeamName);
        RETURN;
    END

SET @FirstName = @TeamName
SET @Surname = 'Player' + @CountPlayers

    INSERT INTO Player (FirstName, Surname, TeamID)
    VALUES (@FirstName, @Surname, @TeamID)

END

以下是EXEC PROC：

DECLARE  @FirstNameOutput VARCHAR(25)
DECLARE @SurnameOutput VARCHAR(25)


EXEC Player_Insert 
    @FirstName = @FirstNameOutput OUTPUT,
    @Surname = @SurnameOutput OUTPUT,
    @TeamId = 1

Answer 1

您需要 NUMBERS 表。这是create this的方法

DEMO here ：

{{1}}

Answer 2

这可以满足您的需求。

;WITH TallyTable
AS (
    SELECT TOP 20 ROW_NUMBER() OVER (
            ORDER BY a.id
            ) AS N
    FROM Master.dbo.SysColumns a
        ,Master.dbo.SysColumns b
    )
INSERT INTO Player (FirstName, Surname, TeamID)
SELECT TeamName AS FirstName
    ,'Player' + CAST(N AS VARCHAR(2)) AS Surname
    ,TeamID
FROM Team
CROSS JOIN TallyTable
ORDER BY TeamID, N

如何插入值列表

2 个答案: