TSQL: Просмотр проблемы с производительностью

Question

У меня возникла проблема со следующим запросом. Он работает и дает мне необходимый результат, но он довольно медленный, из-за моих подзапросов с объединениями. Мои навыки TSQL недостаточно хороши для оптимизации этого запроса. Может быть, некоторые из вас могут помочь.

SELECT 
    Id AS InstanceId, 
    (SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
    FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
      dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    WHERE (tpr.ProcessResultId = 32)) AS Received, 
    (SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
    FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
      dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    WHERE  (tiq.InMsgStateFlags = 1)) AS Queued, 
    (SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
    FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
      dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    WHERE (tiq.InMsgStateFlags = 2)) AS Processed, 
    (SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
    FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
      dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    WHERE (tiq.InMsgStateFlags = 128)) AS Error, 
    (SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
    FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
      dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    WHERE (tiq.InMsgStateFlags = 256)) AS Rejected, 
    (SELECT COUNT(tiq.Id) AS Expr1 
    FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
      dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    WHERE (tpr.ProcessResultId = 16)) AS Duplicates, 
    (SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
    FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
      dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    WHERE (tpr.ProcessResultId = 2)) AS Nack 
FROM 
    dbo.tInstanceConfig AS tic 
WHERE 
    (InstanceGroupId = 1) 

Этот запрос работает как вид.

Если вам нужна дополнительная информация, то дайте мне знать.

Вот таблица Информация

tProcessLog

[Id] [bigint] IDENTITY(1,1) NOT NULL, 
[InstanceConfigId] [int] NOT NULL, 
[InputQueueEntryId] [bigint] NOT NULL, 
[OutputQueueEntryId] [bigint] NULL, 
[ProcessingDtm] [datetime] NOT NULL, 
[ProcessResultId] [int] NOT NULL, 
[SeverityId] [int] NOT NULL, 
[LogText] [varchar](max) NOT NULL, 
[IsHidden] [bit] NOT NULL, 
[ReceiverId] [int] NOT NULL, 

tInputQueueEntry

[Id] [bigint] IDENTITY(1,1) NOT NULL, 
[Created] [datetime] NOT NULL, 
[DataTypeId] [int] NOT NULL, 
[CodePage] [int] NOT NULL, 
[InMsgStateFlags] [int] NOT NULL, 
[ContentData] [nvarchar](max) NOT NULL, 
[ContentHash] [nvarchar](32) NOT NULL, 

tInstanceConfig

[Id] [int] IDENTITY(1,1) NOT NULL, 
[IsActive] [bit] NOT NULL, 
[Type] [varchar](50) NOT NULL, 
[Description] [varchar](50) NOT NULL, 
[ComponentConfig] [xml] NOT NULL, 
[InstanceGroupId] [int] NOT NULL, 

UPD ATE

Наконец-то, я думаю, что нет возможности получить больше производительности. Я использовал советник по настройке MSSQL, который имел некоторые рекомендации, теперь запрос занял ~ 500 мс. Это хорошо для меня.

Спасибо всем! Я не помогаю в производительности, но я узнал, что классный новый материал tsql :)

Answer 1

Нравится?

SELECT 
    tic.Id AS InstanceId, 
    count.* 
FROM 
    dbo.tInstanceConfig AS tic 
    OUTER APPLY 
    (
     SELECT 
      COUNT(DISTINCT CASE WHEN tpr.ProcessResultId = 32 THEN tiq.Id END) AS Received, 
      COUNT(DISTINCT CASE WHEN tiq.InMsgStateFlags = 1 THEN tiq.Id END) AS Queued, 
      COUNT(DISTINCT CASE WHEN tiq.InMsgStateFlags = 2 THEN tiq.Id END) AS Processed, 
      COUNT(DISTINCT CASE WHEN tiq.InMsgStateFlags = 128 THEN tiq.Id END) AS Error, 
      COUNT(DISTINCT CASE WHEN tiq.InMsgStateFlags = 256 THEN tiq.Id END) AS Rejected, 
      COUNT(DISTINCT CASE WHEN tpr.ProcessResultId = 16 THEN tiq.Id END) AS Duplicates, 
      COUNT(DISTINCT CASE WHEN tpr.ProcessResultId = 2 THEN tiq.Id END) AS Nack 
     FROM 
      dbo.tInputQueueEntry AS tiq 
      INNER JOIN dbo.tProcessLog AS tpr ON tpr.InstanceConfigId = tic.Id AND tpr.InputQueueEntryId = tiq.Id 
    ) count 
WHERE 
    (InstanceGroupId = 1) 

Answer 2

Cant вы GROUP BY с помощью InMsgStateFlags и получить значение count(1) поскольку другие условия такие же? Просто напишите заявление SELECT.

Answer 3

DECLARE @Received INT,@Queued INT,@Processed INT,@Error INT,@Rejected INT,@Duplicates INT,@Nack INT 
 

 
SET @Received = SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
 
     FROM 
 
      dbo.tInputQueueEntry AS tiq 
 
     INNER JOIN 
 
      dbo.tProcessLog AS tpr ON tpr.InputQueueEntryId = tiq.Id 
 
     INNER JOIN dbo.tInstanceConfig AS tic ON tpr.InstanceConfigId = tic.Id 
 
     WHERE (tpr.ProcessResultId = 32) 
 

 
SET @Queued = SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
 
     FROM 
 
      dbo.tInputQueueEntry AS tiq 
 
     INNER JOIN 
 
      dbo.tProcessLog AS tpr ON tpr.InputQueueEntryId = tiq.Id 
 
     INNER JOIN dbo.tInstanceConfig AS tic ON tpr.InstanceConfigId = tic.Id 
 
     WHERE  (tiq.InMsgStateFlags = 1) 
 

 
SET @Processed = SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
 
       FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
 
         dbo.tProcessLog AS tpr ON tpr.InputQueueEntryId = tiq.Id 
 
         INNER JOIN dbo.tInstanceConfig AS tic ON tpr.InstanceConfigId = tic.Id 
 
       WHERE (tiq.InMsgStateFlags = 2) 
 

 
SET @Error = SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
 
       FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
 
         dbo.tProcessLog AS tpr ON tpr.InputQueueEntryId = tiq.Id 
 
         INNER JOIN dbo.tInstanceConfig AS tic ON tpr.InstanceConfigId = tic.Id 
 
       WHERE (tiq.InMsgStateFlags = 128) 
 

 
SET @Rejected = SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
 
      FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
 
        dbo.tProcessLog AS tpr ON tpr.InputQueueEntryId = tiq.Id 
 
        INNER JOIN dbo.tInstanceConfig AS tic tpr.InstanceConfigId = tic.Id 
 
      WHERE (tiq.InMsgStateFlags = 256) 
 

 
SET @Duplicates = SELECT COUNT(tiq.Id) AS Expr1 
 
       FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
 
         dbo.tProcessLog AS tpr ON tpr.InputQueueEntryId = tiq.Id 
 
         INNER JOIN dbo.tInstanceConfig AS tic ON tpr.InstanceConfigId = tic.Id 
 
       WHERE (tpr.ProcessResultId = 16) 
 
SET @Nack = SELECT COUNT(DISTINCT tiq.Id) AS Expr1 
 
\t \t \t FROM dbo.tInputQueueEntry AS tiq INNER JOIN 
 
\t \t \t \t \t dbo.tProcessLog AS tpr ON tpr.InputQueueEntryId = tiq.Id 
 
\t \t \t \t \t INNER JOIN dbo.tInstanceConfig AS tic ON tpr.InstanceConfigId = tic.Id 
 
\t \t \t WHERE (tpr.ProcessResultId = 2)     
 

 
SELECT 
 
    Id AS InstanceId, 
 
    @Received AS Received, 
 
    @Queued AS Queued, 
 
    @Processed AS Processed, 
 
    @Error AS Error, 
 
    @Rejected AS Rejected, 
 
    @Duplicates AS Duplicates, 
 
    @Nack AS Nack 
 
FROM 
 
    dbo.tInstanceConfig AS tic 
 
WHERE 
 
    (InstanceGroupId = 1)