So optimieren Sie die Abfrage, die zu viel Zeit dauert

Question

In dieser Abfrage, ich rufe eine Funktion "FnGetPoolWinner" in der folgenden Abfrage 2-3 mal, , die ich denke, verlangsamt seine Leistung oder mehrere Fallanweisungen ist der Grund .

Es braucht Zeit um 00:01:39.

Ich habe versucht Optionen wie Erstellen von Indxes in der Tabelle und Erstellen von gemeinsamen Tabellenausdruck und dann mit dieser Abfrage, aber habe keine Lösung gefunden, um es zu reduzieren Zeit.

DECLARE @TournamentId INT = 1 

DECLARE @TournamentName AS NVARCHAR(MAX) 

SELECT @TournamentName = TournamentName FROM Tournaments WHERE TournamentId = @TournamentId 


    SELECT 
    (SELECT CustomerIds FROM DBO.fnGetPoolWinner(SET_1.BracketBettingAmount,@TournamentId, 
    (CASE 
     WHEN SET_1.GAMES= 63 
     THEN 1 
     WHEN SET_1.GAMES= 31 
     THEN 2 
     WHEN SET_1.GAMES= 15 
     THEN 3 
     ELSE 0 
    END))) AS [AccountNumber], 
    @TournamentName AS TournamentName, 
    (CASE 
     WHEN SET_1.GAMES= 63 
     THEN 'GENERAL POOL ROUND OF 64 $'+CAST(CAST(SET_1.BracketBettingAmount AS INT) AS NVARCHAR)+'' 
     WHEN SET_1.GAMES= 31 
     THEN 'GENERAL POOL ROUND OF 32 $'+CAST(CAST(SET_1.BracketBettingAmount AS INT) AS NVARCHAR)+'' 
     WHEN SET_1.GAMES= 15 
     THEN 'GENERAL POOL SWEET 16 $'+CAST(CAST(SET_1.BracketBettingAmount AS INT) AS NVARCHAR)+'' 
     ELSE '' 
    END) AS [PoolName], 
    (SELECT BracketNames FROM DBO.fnGetPoolWinner(SET_1.BracketBettingAmount,@TournamentId, 
    (CASE 
     WHEN SET_1.GAMES= 63 
     THEN 1 
     WHEN SET_1.GAMES= 31 
     THEN 2 
     WHEN SET_1.GAMES= 15 
     THEN 3 
     ELSE 0 
    END))) AS GroupEntries, 
    'Public' AS Access, 
    COUNT(SET_1.BracketId) AS Members, 
    COUNT(SET_1.BracketId)*SET_1.BracketBettingAmount AS CurrentPoolPrize, 
    (SELECT WinnerNames FROM DBO.fnGetPoolWinner(SET_1.BracketBettingAmount,@TournamentId, 
    (CASE 
     WHEN SET_1.GAMES= 63 
     THEN 1 
     WHEN SET_1.GAMES= 31 
     THEN 2 
     WHEN SET_1.GAMES= 15 
     THEN 3 
     ELSE 0 
    END))) AS WinnersName, 
    (CASE 
     WHEN SET_1.GAMES= 63 
     THEN 1 
     WHEN SET_1.GAMES= 31 
     THEN 2 
     WHEN SET_1.GAMES= 15 
     THEN 3 
     ELSE 0 
    END) AS RoundId, 
    SET_1.BracketBettingAmount AS BettingAmount 
    FROM 
     (SELECT BR.BracketId, 
      BracketBettingAmount, 
      (SELECT COUNT(1) FROM BracketPredictions AS BP WHERE BP.BracketPredictionBracketId =BR.BracketId) AS GAMES 
     FROM Brackets AS BR WHERE BR.BracketTournamentId = @TournamentId AND BR.IsDeleted = 0) SET_1 WHERE SET_1.GAMES > 0 
    GROUP BY SET_1.BracketBettingAmount, SET_1.GAMES HAVING SET_1.BracketBettingAmount IN (1,5,10,25) 

Answer 1

dies versuchen, nicht getestet

DECLARE @TournamentId INT = 1 

    with SET_1 as (

     SELECT BR.BracketId, BracketBettingAmount as BettingAmount, W.GAMES, TN.TournamentName, 
      case W.GAMES 
      WHEN 63 THEN 1 
      WHEN 31 THEN 2 
      WHEN 15 THEN 3 
      ELSE 0 END as IDGAME, 

      CASE W.GAMES 
      WHEN 63 THEN 'GENERAL POOL ROUND OF 64 $'+CAST(CAST(BracketBettingAmount AS INT) AS NVARCHAR) 
      WHEN 31 THEN 'GENERAL POOL ROUND OF 32 $'+CAST(CAST(BracketBettingAmount AS INT) AS NVARCHAR) 
      WHEN 15 THEN 'GENERAL POOL SWEET 16 $' +CAST(CAST(BracketBettingAmount AS INT) AS NVARCHAR) 
      ELSE '' END AS PoolName, 

      TN.TournamentId 

      FROM Brackets AS BR 
      cross apply 
      (
       SELECT COUNT(*) GAMES FROM BracketPredictions AS BP WHERE BP.BracketPredictionBracketId =BR.BracketId 
      ) W 

      inner join Tournaments TN on BR.BracketTournamentId=TN.TournamentId 

      WHERE BR.IsDeleted = 0 and BracketBettingAmount IN (1,5,10,25) and W.GAMES>0 and TN.TournamentId = @TournamentId 


    ), 

    NbBracketId as (select NbBracketId, count(*) Nb from SET_1 group by NbBracketId) 


    SELECT 
    Y.CustomerIds AccountNumber, X.TournamentName, X.PoolName, Y.BracketNames AS GroupEntries, 'Public' AS Access, 
    Z.NB AS Members, Z.NB*X.BettingAmount AS CurrentPoolPrize, Y.WinnerNames, X.IDGAME AS RoundId, X.BettingAmount 
    FROM SET_1 X 
    outer apply DBO.fnGetPoolWinner(SET_1.BracketBettingAmount, SET_1.TournamentId, SET_1.IDGAME) as Y 
    inner join NbBracketId Z on X.BracketId=Z.BracketId 

Answer 2

DBO.fnGetPoolWinner selbst optimieren können werden kann.

versuchen, diesen Ansatz,

DECLARE @TournamentId INT = 1 
DECLARE @TournamentName AS NVARCHAR(MAX) 
SELECT @TournamentName = TournamentName FROM Tournaments WHERE TournamentId = @TournamentId 
select @TournamentName TournamentName, 
CustomerIds AS [AccountNumber] 
,(CASE 
     WHEN SET_1.GAMES= 63 
     THEN 'GENERAL POOL ROUND OF 64 $'+CAST(CAST(SET_1.BracketBettingAmount AS INT) AS NVARCHAR)+'' 
     WHEN SET_1.GAMES= 31 
     THEN 'GENERAL POOL ROUND OF 32 $'+CAST(CAST(SET_1.BracketBettingAmount AS INT) AS NVARCHAR)+'' 
     WHEN SET_1.GAMES= 15 
     THEN 'GENERAL POOL SWEET 16 $'+CAST(CAST(SET_1.BracketBettingAmount AS INT) AS NVARCHAR)+'' 
     ELSE '' 
    END) AS [PoolName] 
    ,ca.BracketNames as GroupEntries 
    'Public' AS Access, 
    COUNT(SET_1.BracketId) AS Members, 
    COUNT(SET_1.BracketId)*SET_1.BracketBettingAmount AS CurrentPoolPrize 
    ,WinnerNames as WinnersName 
    , (CASE 
     WHEN SET_1.GAMES= 63 
     THEN 1 
     WHEN SET_1.GAMES= 31 
     THEN 2 
     WHEN SET_1.GAMES= 15 
     THEN 3 
     ELSE 0 
    END) AS RoundId, 
    SET_1.BracketBettingAmount AS BettingAmount 
FROM 
     (SELECT BR.BracketId, 
      BracketBettingAmount, 
      (SELECT COUNT(1) FROM BracketPredictions AS BP WHERE BP.BracketPredictionBracketId =BR.BracketId) AS GAMES 
     FROM Brackets AS BR WHERE BR.BracketTournamentId = @TournamentId AND BR.IsDeleted = 0) SET_1 
     WHERE SET_1.GAMES > 0 
    GROUP BY SET_1.BracketBettingAmount, SET_1.GAMES 
    HAVING SET_1.BracketBettingAmount IN (1,5,10,25) 

    cross apply(SELECT CustomerIds,BracketNames,WinnerNames 
    FROM DBO.fnGetPoolWinner(SET_1.BracketBettingAmount,@TournamentId, 
    (CASE 
     WHEN SET_1.GAMES= 63 
     THEN 1 
     WHEN SET_1.GAMES= 31 
     THEN 2 
     WHEN SET_1.GAMES= 15 
     THEN 3 
     ELSE 0 
    END)))ca