sql [sql]表值函数示例

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SELECT @AllPlayersCount = COUNT([AP].[PlayerGUID]) FROM [dbo].[func_GetAllPlayers](@PollID) AS [AP]
CREATE FUNCTION [dbo].[func_GetAllPlayers]
(
  @PollID INT
)
RETURNS TABLE
AS
RETURN
(
  SELECT
    DISTINCT [MR].[PlayerGUID]
  FROM
    [MatchupResults] AS [MR]
    INNER JOIN [MatchupItems] AS [MI] ON [MI].[ID] = [MR].[SelectedID]
  WHERE 
    [MI].[PollID] = @PollID	
)

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