Для функції пошуку я використовую представлення, в якому є записи з усіх таблиць, в яких мені потрібно шукати. Перегляд має майже 20 мільйонів записів. Пошуки цього погляду забирають занадто багато часу.
Куди слід шукати, щоб покращити ефективність цієї точки зору?
Приблизне визначення для подання наведено нижче. Він включає тринадцять таблиць і близько тридцяти полів.
CREATE VIEW [dbo].[v_AllForSearch]
AS
SELECT
FT.firstField AS [firstField]
, FT.fld_primary AS [fld_primary]
, FT.fld_thirdField AS [thirdField]
, FT.fld_fourthField AS [fourthField]
, ISNULL(ST.[fld_firstSearchField],'') AS [firstSearchField]
, ISNULL(TT.[fld_thirdSearch],'') AS thirdSearch
, ISNULL(TT.[fld_fourthSearch],'')AS fourthSearch
, ISNULL(TT.[fld_fifthSearch],'')AS fifthSearch
, ISNULL(FRT.[fld_sixthSearch],'') As [sixthSearch]
, ISNULL(FRT.[fld_seventhSearch],'') AS [seventhSearch]
, ISNULL(FRT.[fld_eightSearch],'')AS [eightSearch]
, ISNULL(FIT.[fld_nineSearch],'') AS [nineSearch]
, ISNULL(SIT.[fld_tenthSearch],'')AS [tenthSearch]
, ISNULL(SET.[fld_eleventhSearch],'') AS [eleventhSearch]
, ISNULL(ET.[twelthSearch],'')AS [twelthSearch]
, ISNULL(NT.[thirteenthSearch],'')AS [thirteenthSearch]
, ISNULL(NT.[fourteenSearch],'') AS [fourteenSearch]
, ISNULL(NT.[fifteenSearch],'') AS [fifteenSearch]
, ISNULL(NT.[sxteenSearch],'') AS [sxteenSearch]
, ISNULL(NT.[seventeenSearch],'') AS [seventeenSearch]
, ISNULL(NT.[eighteenSearch],'')AS [eighteenSearch]
, ISNULL(TT.[ninteenSearch],'') AS [ninteenSearch]
, ISNULL(ELT.[twentySearch],'') AS [twentySearch]
, ISNULL(ELT.[twentyOneSearch],'') AS [twentyOneSearch]
, ISNULL(TWT.[twentyTwoSearch],'') AS [twentyTwoSearch]
, ISNULL(THT.twentyThree,'') AS [twentyThree]
, ISNULL(THT.twentyFour,'') AS [twentyFour]
, ISNULL(THT.twentyFive,'') AS [twentyFive]
, ISNULL(THT.twentySix,'') AS [twentySix]
FROM
tblFirstTable AS FT
LEFT JOIN [tblSecondTable] AS ST
ON ST.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblThirdTable] AS TT
ON TT.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblFourthTable] AS FRT
ON FRT.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblFifthTable] AS FIT
ON FIT.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblSixthTable] AS SIT
ON SIT.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblSeventhTable] AS SET
ON SET.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblEighthTable] AS ET
ON ET.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblNinthTable] AS NT
ON NT.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblELTnthTable] AS TT
ON TT.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblEleventhTable] AS ELT
ON ELT.[fld_primary] = FT.[fld_primary]
LEFT JOIN [tblTwelthTable] AS TWT
ON TWT.[fld_id] = ELT.[fld_id]
LEFT JOIN [tblThirteenthTable] AS THT
ON THT.[firstField]= FT.[firstField]
WHERE fld_Status ..