SQL标量函数从存储过程中长时间运行

Question

以下是从存储过程调用的标量函数，但是存储过程  运行非常缓慢。一世  不知道我在功能下面做了什么错误。请帮助我找到什么  做错了。预先感谢。

CREATE  FUNCTION [dbo].[GInterval](@App_ID int, @Setting_ID int,@Entity_ID 
  int, @Item_ID int)
  RETURNS int 
 AS 
BEGIN
DECLARE @SIntVal    int
DECLARE @Error      int
/* This code snipit is taken directly from GInterval because
   stored procedures can not be called from within functions*/

DECLARE @SP_Nme                 varchar(40)
DECLARE @H_Base             int
DECLARE @S_Ent_ID           int
DECLARE @S_Itm_ID               int
DECLARE @AppEntSet_Act  int
DECLARE @AppEntSVal_Act int
DECLARE @Appl_Item_ID       int
DECLARE @Usr_Ent_ID             int
DECLARE @Cl_Ent_ID          int
DECLARE @Ofc_Ent_ID         int
DECLARE @PrsCenter_Ent_ID   int
DECLARE @Appl_Ent_ID        int
DECLARE @UpstreamHit                tinyint
DECLARE @SrcEnt_ID              INT

DECLARE @Appl_ID_loc int
DECLARE @Set_ID_loc  int
DECLARE @Ent_ID_loc  int
DECLARE @Itm_ID_loc  int

SELECT @Appl_ID_loc=@App_ID, @Set_ID_loc=@Setting_ID, 
@Ent_ID_loc=@Entity_ID, @Itm_ID_loc=@Item_ID

SET     @SP_Nme                 = Object_Name(@@PROCID)
SET     @Usr_Ent_ID             = 1
SET     @Cl_Ent_ID          = 2
SET     @Ofc_Ent_ID         = 3
SET     @PrsCenter_Ent_ID   = 4
SET     @Appl_Ent_ID        = 5
SET     @AppEntSet_Act  = 297
SET     @AppEntSVal_Act = 299
SET     @UpstreamHit                = 0

SET @SIntVal=NULL
SET @SrcEnt_ID=NULL

SELECT  @SIntVal = AESV.intVal,
        @SrcEnt_ID = @Ent_ID_loc
FROM    GEICO.dbo.ApplicationEntitySettingVal AESV  
WHERE   AESV.Application_ID =  @Appl_ID_loc
AND AESV.Setting_ID = @Set_ID_loc
AND AESV.Entity_ID = @Ent_ID_loc
AND AESV.Status_ID = @AppEntSVal_Act
AND AESV.Item_ID = @Itm_ID_loc

IF @@error <> 0 
BEGIN
    RETURN -999999999
END

IF ((@SIntVal IS NULL) AND (@SrcEnt_ID IS NULL))
BEGIN



    SELECT  @H_Base = HierarchyRank
    FROM    GEICO.dbo.ApplicationEntitySetting AES  
    WHERE   AES.Application_ID =  @Appl_ID_loc
    AND AES.Setting_ID = @Set_ID_loc
    AND AES.Entity_ID = @Ent_ID_loc

    IF @H_Base IS NULL
        SET @H_Base = 0

    DECLARE @upstream_temp TABLE (Entity_ID INT, Item_ID INT)   

    INSERT INTO @upstream_temp(Entity_ID,Item_ID)
    SELECT   Entity_ID,Item_ID FROM GEICO.dbo.fn_Setting_GetUpstreamIDs(@Ent_ID_loc, @Itm_ID_loc)

    DECLARE SettingChk cursor LOCAL FAST_FORWARD READ_ONLY
    FOR
        SELECT  Entity_ID
        FROM    GEICO.dbo.ApplicationEntitySetting AES  
        WHERE   AES.Application_ID =  @Appl_ID_loc
        AND AES.Setting_ID = @Set_ID_loc
        AND AES.Status_ID = @AppEntSVal_Act
        AND AES.HierarchyRank > @H_Base
        ORDER BY    AES.HierarchyRank


    OPEN SettingChk

    WHILE (10=10)
    BEGIN

        FETCH NEXT
        FROM    SettingChk
        INTO    @Search_Entity_ID

        IF (@@fetch_status <> 0)
        BEGIN
            CLOSE SettingChk
            DEALLOCATE SettingChk
            BREAK
        END



        SELECT  @S_Itm_ID = Item_ID FROM    @upstream_temp
        WHERE Entity_ID = @S_Ent_ID

        --Need to get application ID since it was not returned by the function of getupstreamids.
        if @S_Ent_ID = @Appl_Ent_ID 
            SELECT  @S_Itm_ID =  @Appl_ID_loc


        IF @S_Itm_ID IS NOT NULL
        BEGIN

            IF EXISTS
            (
                SELECT  TOP 1 1
                FROM    GEICO.dbo.ApplicationEntitySettingVal AESV (nolock)
                WHERE   AESV.Application_ID =  @Appl_ID_loc
                AND AESV.Setting_ID = @Set_ID_loc
                AND AESV.Entity_ID = @S_Ent_ID
                AND AESV.Status_ID = @AppEntSVal_Act
                AND AESV.Item_ID = @S_Itm_ID
            )
            BEGIN 
                SELECT  @SIntVal = AESV.intVal, 
                    @SrcEnt_ID = @S_Ent_ID
                FROM    GEICO.dbo.ApplicationEntitySettingVal AESV 
                WHERE   AESV.Application_ID =  @Appl_ID_loc
                AND AESV.Setting_ID = @Set_ID_loc
                AND AESV.Entity_ID = @S_Ent_ID
                AND AESV.Status_ID = @AppEntSVal_Act
                AND AESV.Item_ID = @S_Itm_ID

                IF @@error <> 0 
                BEGIN
                    CLOSE SettingChk
                    DEALLOCATE SettingChk
                    RETURN -999999999
                END

                --Exit the loop
                SET @UpstreamHit = 1
                BREAK
            END
        END -- Make sure Search_Item_ID is not null
    END -- Loop

    IF @UpstreamHit = 0 
    BEGIN
        RETURN -999999999
    END

    CLOSE SettingChk
    DEALLOCATE SettingChk       
END

SELECT
    @Error = @@Error

IF @Error <> 0
BEGIN
    SET @SIntVal = -999999999
END 

RETURN  @SIntVal
 END

我使用了SQL Server。请任何人发现以上功能的错误并解决我的问题。谢谢  提前。

Answer 1

CREATE  FUNCTION [dbo].[GInterval](@App_ID int, @Setting_ID int,@Entity_ID int, @Item_ID int)
  RETURNS int 
 AS 
BEGIN
DECLARE @SIntVal    int
DECLARE @Error      int


DECLARE @SP_Nme                 varchar(40)
DECLARE @H_Base             int
DECLARE @S_Ent_ID           int
DECLARE @S_Itm_ID               int
DECLARE @AppEntSet_Act  int
DECLARE @AppEntSVal_Act int
DECLARE @Appl_Item_ID       int
DECLARE @Usr_Ent_ID             int
DECLARE @Cl_Ent_ID          int
DECLARE @Ofc_Ent_ID         int
DECLARE @PrsCenter_Ent_ID   int
DECLARE @Appl_Ent_ID        int
DECLARE @UpstreamHit                tinyint
DECLARE @SrcEnt_ID              INT

DECLARE @Appl_ID_loc int
DECLARE @Set_ID_loc  int
DECLARE @Ent_ID_loc  int
DECLARE @Itm_ID_loc  int

SELECT @Appl_ID_loc=@App_ID, @Set_ID_loc=@Setting_ID, 
@Ent_ID_loc=@Entity_ID, @Itm_ID_loc=@Item_ID

SET     @SP_Nme                 = Object_Name(@@PROCID)
SET     @Usr_Ent_ID             = 1
SET     @Cl_Ent_ID          = 2
SET     @Ofc_Ent_ID         = 3
SET     @PrsCenter_Ent_ID   = 4
SET     @Appl_Ent_ID        = 5
SET     @AppEntSet_Act  = 297
SET     @AppEntSVal_Act = 299
SET     @UpstreamHit                = 0

SET @SIntVal=NULL
SET @SrcEnt_ID=NULL

SELECT  @SIntVal = AESV.intVal,
        @SrcEnt_ID = @Ent_ID_loc
FROM    GEICO.dbo.ApplicationEntitySettingVal AESV  WITH(NOLOCK)
WHERE   AESV.Application_ID =  @Appl_ID_loc
AND AESV.Setting_ID = @Set_ID_loc
AND AESV.Entity_ID = @Ent_ID_loc
AND AESV.Status_ID = @AppEntSVal_Act
AND AESV.Item_ID = @Itm_ID_loc

IF @@error <> 0 
BEGIN
    RETURN -999999999
END

IF ((@SIntVal IS NULL) AND (@SrcEnt_ID IS NULL))
BEGIN



    SELECT  @H_Base = HierarchyRank
    FROM    GEICO.dbo.ApplicationEntitySetting AES  WITH(NOLOCK)
    WHERE   AES.Application_ID =  @Appl_ID_loc
    AND AES.Setting_ID = @Set_ID_loc
    AND AES.Entity_ID = @Ent_ID_loc

    IF @H_Base IS NULL
        SET @H_Base = 0

    DECLARE @upstream_temp TABLE (Entity_ID INT, Item_ID INT)   

    INSERT INTO @upstream_temp(Entity_ID,Item_ID)
    SELECT   Entity_ID,Item_ID FROM GEICO.dbo.fn_Setting_GetUpstreamIDs(@Ent_ID_loc, @Itm_ID_loc)

    DECLARE SettingChk cursor LOCAL FAST_FORWARD READ_ONLY
    FOR
        SELECT  Entity_ID
        FROM    GEICO.dbo.ApplicationEntitySetting AES  WITH(NOLOCK)
        WHERE   AES.Application_ID =  @Appl_ID_loc
        AND AES.Setting_ID = @Set_ID_loc
        AND AES.Status_ID = @AppEntSVal_Act
        AND AES.HierarchyRank > @H_Base
        ORDER BY    AES.HierarchyRank


    OPEN SettingChk



                FETCH NEXT
                FROM    SettingChk
                INTO    @Search_Entity_ID

                IF (@@fetch_status <> 0)
                BEGIN
                    CLOSE SettingChk
                    DEALLOCATE SettingChk
                    BREAK
                END



                SELECT  @S_Itm_ID = Item_ID FROM    @upstream_temp
                WHERE Entity_ID = @S_Ent_ID

                --Need to get application ID since it was not returned by the function of getupstreamids.
                if @S_Ent_ID = @Appl_Ent_ID 
                    SELECT  @S_Itm_ID =  @Appl_ID_loc


                    IF @S_Itm_ID IS NOT NULL
                    BEGIN

                                        IF EXISTS
                                        (
                                            SELECT  TOP 1 
                                            FROM    GEICO.dbo.ApplicationEntitySettingVal AESV WITH(nolock)
                                            WHERE   AESV.Application_ID =  @Appl_ID_loc
                                            AND AESV.Setting_ID = @Set_ID_loc
                                            AND AESV.Entity_ID = @S_Ent_ID
                                            AND AESV.Status_ID = @AppEntSVal_Act
                                            AND AESV.Item_ID = @S_Itm_ID
                                        )
                                        BEGIN 
                                            SELECT  @SIntVal = AESV.intVal, 
                                                @SrcEnt_ID = @S_Ent_ID
                                            FROM    GEICO.dbo.ApplicationEntitySettingVal AESV  WITH(nolock)
                                            WHERE   AESV.Application_ID =  @Appl_ID_loc
                                            AND AESV.Setting_ID = @Set_ID_loc
                                            AND AESV.Entity_ID = @S_Ent_ID
                                            AND AESV.Status_ID = @AppEntSVal_Act
                                            AND AESV.Item_ID = @S_Itm_ID

                                            IF @@error <> 0 
                                            BEGIN
                                                CLOSE SettingChk
                                                DEALLOCATE SettingChk
                                                RETURN -999999999
                                            END

                                            --Exit the loop
                                            SET @UpstreamHit = 1
                                            BREAK
                                        END
                    END -- Make sure Search_Item_ID is not null


    IF @UpstreamHit = 0 
    BEGIN
        RETURN -999999999
    END

    CLOSE SettingChk
    DEALLOCATE SettingChk       
END

SELECT
    @Error = @@Error

IF @Error <> 0
BEGIN
    SET @SIntVal = -999999999
END 

RETURN  @SIntVal
 END