[英]Need help speeding this query
這是我的查詢,大約需要5秒鍾才能獲取50條記錄。 DB中的總行數約為100K。
exec sp_executesql N'
set arithabort off;
set transaction isolation level read uncommitted;
With cte
as (
Select
ROW_NUMBER() OVER (Order By d.LastStatusChangedDateTime desc ) peta_rn,
d.DocumentID
From Documents d
Inner Join Users u on d.UserID = u.UserID
Inner Join IGroupes ig on ig.IGroupID = d.IGroupID
Inner Join ITypes it on it.ITypeID = d.ITypeID
Where 1=1
And DateDiff(day, @0, d.LastStatusChangedDateTime ) >= 0
And DateDiff(day, d.LastStatusChangedDateTime, @1) >= 0
And (d.JurisdictionID = @2
Or DocumentStatusID = @3
Or DocumentStatusID = @4
Or DocumentStatusID = @5
Or DocumentStatusID = @6)
)
Select
d.DocumentID,
d.IsReEfiled,
d.IGroupID,
d.ITypeID,
d.RecordingDateTime,
d.CreatedByAccountID,
d.JurisdictionID,
d.LastStatusChangedDateTime as LastStatusChangedDateTime,
d.IDate,
d.InstrumentID,
d.DocumentStatusID,
ig.Abbreviation as IGroupAbbreviation,
u.Username,
j.JDAbbreviation,
inf.DocumentName,
it.Abbreviation as ITypeAbbreviation,
d.DocumentDate,
ds.Abbreviation as DocumentStatusAbbreviation,
ds.Name as DocumentStatusName,
(Select
Cast(
Case
When d.DocumentID = ( Select Top 1 doc.DocumentID
From Documents doc
Where doc.JurisdictionID = d.JurisdictionID
And doc.DocumentStatusID = d.DocumentStatusID
Order By LastStatusChangedDateTime)
Then 1
Else 0
End as bit))
as CanChangeStatus,
Upper((
Select Top 1 Stuff((
Select ''='' + dbo.GetDocumentNameFromParams(Business, FirstName, MiddleName, LastName, Abbreviation, NameTypeID)
From DocumentNames dn
Left Join Titles t on dn.TitleID = t.TitleID
Where DocumentID = d.DocumentID
For XML PATH('''')),1,1,'''')))
as FlatDocumentName
From
Documents d
Left Join IGroupes ig On d.IGroupID = ig.IGroupID
Left Join ITypes it On d.ITypeID = it.ITypeID
Left Join Users u On u.UserID = d.UserID
Left Join DocumentStatuses ds On d.DocumentStatusID = ds.DocumentStatusID
Left Join InstrumentFiles inf On d.DocumentID = inf.DocumentID
Left Join Jurisdictions j on j.JurisdictionID = d.JurisdictionID
Inner Join cte on cte.DocumentID = d.DocumentID
Where
1=1
And peta_rn>=@13
AND peta_rn<=@14
Order
by peta_rn
',N'@0 datetime,@1 datetime,@2 int,@3 int,@4 int,@5 int,@6 int,@7 int,@8 int,@9 int,@10 int,@11 int,@12 int,@13 int,@14 int',
@0='2013-03-01 00:00:00',@1='2013-04-30 00:00:00',@2=1,@3=5,@4=9,@5=4,@6=1,@7=1,@8=5,@9=9,@10=4,@11=1,@12=1,@13=0,@14=50
我確認需要時間的部分是這個罪魁禍首子查詢:
(Select
Cast(
Case
When d.DocumentID = ( Select Top 1 doc.DocumentID
From Documents doc
Where doc.JurisdictionID = d.JurisdictionID
And doc.DocumentStatusID = d.DocumentStatusID
Order By LastStatusChangedDateTime)
Then 1
Else 0
End as bit))
作為替代方案,我嘗試使用此解決方案:
exec sp_executesql N'
set arithabort off;
set transaction isolation level read uncommitted;
With cte
as (
Select ROW_NUMBER() OVER (Order By d.LastStatusChangedDateTime desc ) peta_rn,
CASE WHEN ROW_NUMBER() OVER (
PARTITION BY d.JurisdictionID, d.DocumentStatusID ORDER BY LastStatusChangedDateTime ) = 1
THEN 1
ELSE 0
END
AS CanChangeStatus,
d.DocumentID
From Documents d
Inner Join Users u on d.UserID = u.UserID
Inner Join IGroupes ig on ig.IGroupID = d.IGroupID
Inner Join ITypes it on it.ITypeID = d.ITypeID
Where 1=1
And (d.JurisdictionID = @2
Or DocumentStatusID = @3
Or DocumentStatusID = @4
Or DocumentStatusID = @5
Or DocumentStatusID = @6)
)
Select
d.DocumentID,
d.IsReEfiled,
d.IGroupID,
d.ITypeID,
d.RecordingDateTime,
d.CreatedByAccountID,
d.JurisdictionID,
d.LastStatusChangedDateTime as LastStatusChangedDateTime,
d.IDate,
d.InstrumentID,
d.DocumentStatusID,
ig.Abbreviation as IGroupAbbreviation,
u.Username,
j.JDAbbreviation,
inf.DocumentName,
it.Abbreviation as ITypeAbbreviation,
d.DocumentDate,
ds.Abbreviation as DocumentStatusAbbreviation,
ds.Name as DocumentStatusName,
cte.CanChangeStatus,
Upper((
Select Top 1 Stuff((
Select ''='' + dbo.GetDocumentNameFromParams(Business, FirstName, MiddleName, LastName, Abbreviation, NameTypeID)
From DocumentNames dn
Left Join Titles t on dn.TitleID = t.TitleID
Where DocumentID = d.DocumentID
For XML PATH('''')),1,1,'''')))
as FlatDocumentName
From
Documents d
Left Join IGroupes ig On d.IGroupID = ig.IGroupID
Left Join ITypes it On d.ITypeID = it.ITypeID
Left Join Users u On u.UserID = d.UserID
Left Join DocumentStatuses ds On d.DocumentStatusID = ds.DocumentStatusID
Left Join InstrumentFiles inf On d.DocumentID = inf.DocumentID
Left Join Jurisdictions j on j.JurisdictionID = d.JurisdictionID
Inner Join cte on cte.DocumentID = d.DocumentID
Where
1=1
And peta_rn>=@13
AND peta_rn<=@14
Order
by peta_rn
',N'@0 datetime,@1 datetime,@2 int,@3 int,@4 int,@5 int,@6 int,@7 int,@8 int,@9 int,@10 int,@11 int,@12 int,@13 int,@14 int',
@0='2010-03-01 00:00:00',@1='2013-04-30 00:00:00',@2=1,@3=5,@4=9,@5=4,@6=1,@7=1,@8=5,@9=9,@10=4,@11=1,@12=1,@13=0,@14=50
但它仍然需要超過4秒。 理想情況下,我希望結果不到1秒。 有什么方法可以加快速度嗎? 我已經在所有搜索列上都有索引,其中包括JurisdictionID
和DocumentStatusID
試試這個 -
exec sp_executesql N'
SET arithabort OFF;
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
WITH cte AS
(
SELECT
peta_rn = ROW_NUMBER() OVER (ORDER BY d.LastStatusChangedDateTime DESC)
, d.DocumentID
, u.Username
, it.Abbreviation AS ITypeAbbreviation
, ig.Abbreviation AS IGroupAbbreviation
, d.IsReEfiled
, d.IGroupID
, d.ITypeID
, d.RecordingDateTime
, d.CreatedByAccountID
, d.JurisdictionID
, d.LastStatusChangedDateTime AS LastStatusChangedDateTime
, d.IDate
, d.InstrumentID
, d.DocumentStatusID
, d.DocumentDate
FROM dbo.Documents d
JOIN dbo.Users u ON d.UserID = u.UserID
JOIN dbo.IGroupes ig ON ig.IGroupID = d.IGroupID
JOIN dbo.ITypes it ON it.ITypeID = d.ITypeID
WHERE DATEDIFF(DAY, @0, d.LastStatusChangedDateTime) >= 0
AND DATEDIFF(DAY, d.LastStatusChangedDateTime, @1) >= 0
AND (
d.JurisdictionID = @2
OR
DocumentStatusID IN (@3, @4, @5, @6)
)
)
SELECT cte.DocumentID ,
cte.IsReEfiled ,
cte.IGroupID ,
cte.ITypeID ,
cte.RecordingDateTime ,
cte.CreatedByAccountID ,
cte.JurisdictionID ,
cte.LastStatusChangedDateTime,
cte.IDate ,
cte.InstrumentID ,
cte.DocumentStatusID ,
cte.IGroupAbbreviation ,
cte.Username ,
j.JDAbbreviation ,
inf.DocumentName ,
cte.ITypeAbbreviation ,
cte.DocumentDate ,
ds.Abbreviation AS DocumentStatusAbbreviation ,
ds.Name AS DocumentStatusName ,
( SELECT CAST(CASE WHEN cte.DocumentID = (
SELECT TOP 1 doc.DocumentID
FROM Documents doc
WHERE doc.JurisdictionID = cte.JurisdictionID
AND doc.DocumentStatusID = cte.DocumentStatusID
ORDER BY LastStatusChangedDateTime)
THEN 1
ELSE 0
END AS BIT)
) AS CanChangeStatus ,
UPPER(( SELECT TOP 1
STUFF(( SELECT '' = ''
+ dbo.GetDocumentNameFromParams(Business,
FirstName,
MiddleName,
LastName,
Abbreviation,
NameTypeID)
FROM dbo.DocumentNames dn
LEFT JOIN dbo.Titles t ON dn.TitleID = t.TitleID
WHERE DocumentID = cte.DocumentID
FOR XML PATH('''')), 1, 1, '''')
)) AS FlatDocumentName
FROM cte
LEFT JOIN dbo.DocumentStatuses ds ON cte.DocumentStatusID = ds.DocumentStatusID
LEFT JOIN dbo.InstrumentFiles inf ON cte.DocumentID = inf.DocumentID
LEFT JOIN dbo.Jurisdictions j ON j.JurisdictionID = cte.JurisdictionID
WHERE peta_rn BETWEEN @13 AND @14
ORDER BY peta_rn',N'@0 datetime,@1 datetime,@2 int,@3 int,@4 int,@5 int,@6 int,@7 int,@8 int,@9 int,@10 int,@11 int,@12 int,@13 int,@14 int',
@0='2013-03-01 00:00:00',@1='2013-04-30 00:00:00',@2=1,@3=5,@4=9,@5=4,@6=1,@7=1,@8=5,@9=9,@10=4,@11=1,@12=1,@13=0,@14=50
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