I would like to execute a stored procedure which populates data to table using nightly job.

```
sp_WarehouseAttendance_New:

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[sp_WarehouseAttendance_New]
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
SET NOCOUNT ON;

---------delete existing warehouse table------------------------------
IF OBJECT_ID('dbo.WarehouseAttendance_New', 'U') IS NOT NULL
  DROP TABLE dbo.WarehouseAttendance_New; 
--------Create New Table--------------------------------------------------
---Weeks------------------------------------------------------------------
With weeks as 
(select VDC_week_no, VDC_cal_year, min(VDC_day_date) as WeekCommence
from sql10.ng.dbo.Vdaily_calender
where VDC_avail = 'T'
group by VDC_week_no, VDC_cal_year),

---TTWeeks----------------------------------------------------------------
TTWeeks as

(SELECT VDC_Cal_Year as REMSYear, [VDC_week_no] as WholeYearWeekNo, WeekCommence,ROW_NUMBER() OVER(PARTITION BY vdc_cal_year ORDER BY VDC_week_no) as TermTimeWeekNo FROM weeks)

---Main----------------------------------------------------------------------
SELECT    CASE WHEN STYR_Age_end_Aug < 16 THEN '1416' WHEN STYR_Age_end_Aug < 19 THEN '1618' ELSE '19+' END AgeBand,
REGT_Year, RTRIM(PRPH_ML1) AS PRPH_ML1, 
RTRIM(PRPH_ML2) AS PRPH_ML2, 
ML2.GNCD_Description AS [Curriculum Area], 
RTrim(PRPH_ML2) AS Section, 
q.GNCD_Description AS Section_Name, LEFT(q.GNCD_Description, 3) AS Dept, 
rtrim(REGT_Provision_Code) as REGT_Provision_Code, rtrim(PRPH_Title) as PRPH_Title, 
REGT_Student_ID, STEN_Student_ID, STEN_Funding_Stream, STYR_Age_end_Aug, REGS_Session_No, 
rtrim(REGH_Class_Register) as REGH_Class_Register, RTRIM(REGH_Register_Title) as REGH_Register_Title, REGH_Day, 
CASE WHEN REGH_Day = '1' THEN 'Sunday' WHEN REGH_Day = '2' THEN 'Monday' 
WHEN REGH_Day = '3' THEN 'Tuesday' WHEN REGH_Day = '4' THEN 'Wednesday'
WHEN REGH_Day = '5' THEN 'Thursday' WHEN REGH_Day = '6' THEN 'Friday' 
WHEN REGH_Day = '7' THEN 'Saturday' END AS Register_Day, [REGH_Start_Time] ,[REGH_End_Time],
CASE WHEN (REGTrgstudt.REGT_Provision_Code LIKE '27%' OR
REGT_Provision_Code LIKE 'MA27%' OR REGT_Provision_Code LIKE 'FS%') 
THEN 'FunctionalSkill' 
WHEN REGT_Provision_Code LIKE '16%' THEN 'GCSE' WHEN REGT_Provision_Code LIKE '%/F%' OR REGT_Provision_Code LIKE '%/D%' OR
REGT_Provision_Code LIKE '%/E%' OR
REGT_Provision_Code LIKE '%/X%' THEN 'Main' ELSE 'Addition' END AS CourseType, 
CASE WHEN isnull(RGAT_Present,'X') IN ('N', 'Y','X') and REGS_Session_Date<GETDATE()
THEN REGS_Duration - isnull(REGD_Mins_Late,0) ELSE 0 END AS Mins_Poss, 
CASE WHEN isnull(RGAT_Present,'X') = 'Y' and REGS_Session_Date<GETDATE() THEN 
REGS_Duration - REGD_Mins_Late ELSE 0 END AS Mins_Att, 
CASE WHEN RGAT_Present = 'Y' and REGS_Session_Date<GETDATE() THEN REGD_Mins_Late ELSE 0 END AS Mins_Late, 
[REGS_Session_Date] as Session_Date,
TermTimeWeekNo, REGH_ISN, PRPH_ISN, STUD_Surname, 
STUD_Forename_1, REGD_Attendance_Mark,
REGT_start_date, REGT_End_date, WeekCommence,
STFM_LearnFAMCode,
CASE 
WHEN STFM_LearnFAMCode=1 THEN '14-15 year old learner is eligible for free meals'
WHEN STFM_LearnFAMCode=2 THEN '16-19 year old learner is eligible for and in receipt of free meals'
ELSE 'N/A'
END AS FreeMealsIndicator,
CASE 
STFM_LearnFAMCode=36 THEN 'Care to Learn (C2L) (EFA funded only)'
STFM_LearnFAMCode=55 THEN '16-19 Bursary Fund - learner member of a vulnerable group (EFA funded only)' 
WHEN STFM_LearnFAMCode=56 THEN '16-19 Bursary Fund - learner awarded discretionary bursary (EFA funded only)'   
WHEN STFM_LearnFAMCode=57 THEN 'Residential support (EFA funded only)'
WHEN STFM_LearnFAMCode=58 THEN '19+ Hardship (Skills Funding Agency funded learners only)'  
WHEN STFM_LearnFAMCode=59 THEN '20+ Childcare (Skills Funding Agency funded learners only)' 
WHEN STFM_LearnFAMCode=60 THEN 'Residential Access Fund (Skills Funding Agency funded learners only)'   
WHEN STFM_LearnFAMCode IN (61, 62, 63, 64, 65) THEN 'Unassigned'    
ELSE 'N/A'
END AS Bursary, CASE WHEN STUD_Gender='M' THEN 'Male'
WHEN STUD_Gender='F' THEN 'Female'
END AS Gender, 
CASE 
WHEN STUD_Ethnicity= 31 THEN 'White - English / Welsh / Scottish / Northern Irish / British'
WHEN  STUD_Ethnicity= 32 THEN 'White - Irish'
WHEN  STUD_Ethnicity= 33 THEN 'White - Gypsy or Irish Traveller'
WHEN  STUD_Ethnicity= 34 THEN 'White - Any Other White background'
WHEN  STUD_Ethnicity= 35 THEN 'Mixed / Multiple Ethnic group - White and Black Caribbean'
WHEN  STUD_Ethnicity= 36 THEN 'Mixed / Multiple Ethnic group - White and Black African'
WHEN  STUD_Ethnicity= 37 THEN 'Mixed / Multiple Ethnic group - White and Asian'
WHEN  STUD_Ethnicity= 38 THEN 'Mixed / Multiple Ethnic group - Any Other Mixed / multiple ethnic background'
WHEN  STUD_Ethnicity= 39 THEN 'Asian / Asian British - Indian'
WHEN  STUD_Ethnicity= 40 THEN 'Asian/ Asian British - Pakistani'
WHEN  STUD_Ethnicity= 41 THEN 'Asian / Asian British - Bangladeshi'
WHEN  STUD_Ethnicity= 42 THEN 'Asian / Asian British - Chinese'
WHEN  STUD_Ethnicity= 43 THEN 'Asian / Asian British - Any other Asian background'
WHEN  STUD_Ethnicity= 44 THEN 'Black / African / Caribbean / Black British - African'
WHEN  STUD_Ethnicity= 45 THEN 'Black / African / Caribbean / Black British - Caribbean'
WHEN  STUD_Ethnicity= 46 THEN 'Black / African / Caribbean / Black British - Any other Black / African / Caribbean background'
WHEN  STUD_Ethnicity= 47 THEN 'Other ethnic group - Arab'
WHEN  STUD_Ethnicity= 98 THEN 'Any Other'
WHEN  STUD_Ethnicity= 99 THEN 'Not provided'
END AS Ethnicity,
CASE 
WHEN g.GNUC_Flag_1 = 1 THEN 'Yes'
WHEN g.GNUC_Flag_1 = 0 THEN 'No'
END AS [Looked After Child],
CASE 
WHEN SUB1.GNUC_Type = 'STYR' THEN 'Yes'
WHEN SUB1.GNUC_Type != 'STYR' THEN 'No'
END AS ALS
INTO WarehouseAttendance_New                    
FROM        
sql10.ng.dbo.REGTrgstudt 
INNER JOIN
sql10.ng.dbo.REGSrgsessn ON REGT_REGH_ISN = REGS_REGH_ISN  
inner join sql10.ng.dbo.Vdaily_calender
ON REGS_Session_Date=VDC_day_date      
INNER JOIN TTWeeks on REGT_year=TTWeeks.REMSYear
and VDC_week_no=WholeYearWeekNo and VDC_cal_year=REMSYear
INNER JOIN
sql10.ng.dbo.REGHrghdr ON REGH_ISN = REGT_REGH_ISN 
INNER JOIN
sql10.ng.dbo.PRPHProvisionHeader ON REGT_Provision_Code = PRPH_Code 
INNER JOIN
sql10.ng.dbo.GNCDgncodes AS ML2 ON ML2.GNCD_General_Code = PRPH_ML2 AND ML2.GNCD_Code_Type = 'M2' 
INNER JOIN
sql10.ng.dbo.STEN ON STEN_Student_ID = REGTrgstudt.REGT_Student_ID AND STEN_Provision_Code = REGTrgstudt.REGT_Provision_Code AND
STEN_Provision_Instance = REGT_Provision_Instance 
LEFT OUTER JOIN  sql10.ng.dbo.STFMLearnerFAM ON STFM_Year = STEN_Year AND STFM_Student_ID = STEN_Student_ID 
INNER JOIN
sql10.ng.dbo.STYRstudentYR ON STYR_Student_ID = REGT_Student_ID AND STYR_Year = REGT_Year   
INNER JOIN (SELECT GNUC_Type, GNUC_Year, GNUC_Entity_ISN FROM sql10.ng.dbo.GNUCustom 
WHERE (GNUC_Year IN ('2013', '2014', '2015'))) AS SUB1 ON REGT_Year = SUB1.GNUC_Year 
AND STYR_ISN = SUB1.GNUC_Entity_ISN
INNER JOIN
(SELECT     ACYR_College_Year
FROM          sql10.ng.dbo.ACYR
WHERE      (ACYR_College_Year in (2015, 2014, 2013, 2012))) AS SUB ON REGT_Year = SUB.ACYR_College_Year
INNER JOIN sql10.ng.dbo.STUDStudent on STYR_Student_ID=STUD_Student_ID
JOIN sql10.ng.dbo.GNUCustom g ON STUD_ISN = g.GNUC_Entity_ISN AND g.GNUC_Type = 'STUD'       
INNER JOIN sql10.ng.dbo.REGDropin ON REGT_REGH_ISN = REGD_REGH_ISN AND REGT_Student_ID = REGD_Student_ID 
AND 
REGD_Session_No = REGS_Session_No
INNER JOIN
sql10.ng.dbo.RGATAttendance ON REGD_Attendance_Mark = RGAT_Attendance_Code 
INNER JOIN
sql10.ng.dbo.PRPIProvisionInstance AS pit ON pit.PRPI_Code = REGT_Provision_Code 
and pit.prpi_instance = REGT_Provision_Instance
INNER JOIN
(SELECT     GNCD_General_Code, GNCD_Description
FROM          sql10.ng.dbo.GNCDgncodes
WHERE      (GNCD_Code_Type = 'M2')) AS q ON q.GNCD_General_Code =  RTrim(PRPH_ML2) 
END
GO

```

I want to make sure I am using correct SQL in SQL Server Agent -> Steps

```
DECLARE @return_value int

EXEC    @return_value = [dbo].[sp_WarehouseAttendance_New]

SELECT  'Return Value' = @return_value

```

I would like to know if above query deletes existing data in the table or just appends to existing data which should not be the case.

Also, whenever I execute this procedure either using sql job or in query, it throws Lock timeout request error as below.

[![Lock Timeout error](https://i.stack.imgur.com/S9VGO.png)](https://i.stack.imgur.com/S9VGO.png)

Kindly let me know how this can be resolved.

Thanks,
Ar

Execution Plan below(Source Server - SQL10.NG):

[![Plan1](https://i.stack.imgur.com/iG42g.png)](https://i.stack.imgur.com/iG42g.png)

[![Plan2](https://i.stack.imgur.com/vTuSk.png)](https://i.stack.imgur.com/vTuSk.png)

[![Plan3](https://i.stack.imgur.com/vMYLj.png)](https://i.stack.imgur.com/vMYLj.png)

[![Plan 4](https://i.stack.imgur.com/AHzCc.png)](https://i.stack.imgur.com/AHzCc.png)

[![Plan 5](https://i.stack.imgur.com/jnT8b.png)](https://i.stack.imgur.com/jnT8b.png)

Client Statistics:

[![Client Stats](https://i.stack.imgur.com/fGAOz.png)](https://i.stack.imgur.com/fGAOz.png)