SQL Server Agent - Run Query at the end of each month with date variable

I am running SQL Server 2008 R2, and I need to create a new job that will basically run a query at the start of each month (at the 1st of each month at 01:00 AM).

Here is the query:

INSERT INTO [SupportTracker].[dbo].[DashboardRecords]
SELECT [bg_id]
      ,[bg_short_desc]
      ,[bg_reported_date]
      ,[bg_status_updated_date]
      ,[us_firstname]
      ,[us_lastname]
      ,[LastUpdatedUserFirstname]
      ,[LastUpdatedUserLastname]
      ,[st_name]
      ,[pr_name]
      ,[ct_name]
      ,[pj_name]
      ,[AssignedUserFirstname]
      ,[AssignedUserLastname]
      ,[bg_project]
      ,[no_of_hours]
      ,[BugType]
      ,[SubType]
      ,[Device]
      ,[pj_parent_id]
FROM [SupportTracker].[dbo].[ViewIssueListwBugTypeNDevice]
WHERE 
     bg_reported_date between '2012-12-01 00:00:00.000' AND '2012-12-31 23:59:59.999' 
     AND bg_id NOT IN (SELECT bg_id FROM [SupportTracker].[dbo].[DashboardRecords])
ORDER BY bg_reported_date ASC

My problem is at the WHERE clause. These two dates have to change every month.

-
If we are on the 01-01-2013 01:00:00:00, I need these 2 dates to be:

2012-12-01 00:00:00.000 and 2012-12-31 23:59:59.999

-
If we are on the 01-02-2013 01:00:00:00, I need these 2 dates to be:

2013-01-01 00:00:00.000 and 2013-01-31 23:59:59.999.

Basically I need to capture parts of the database and save it in the table, as it was at the end of each month...

Thanks

To find the first and last days of the month:

DECLARE @MonthStart DATETIME
DECLARE @Date  DATETIME
DECLARE @next DATETIME 
-- create the required date. because today is the 21st i subtracted month. 
-- since you're running the job on the first day of the new month, 
-- you may want to change MONTH to DAY. however, if the job fails that change
-- that may cause you some problems
SET @Date = DATEADD(MONTH,-1,DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0)) 

-- get the first day of the month of the date specified
SET @MonthStart = DATEADD(DAY, 1, @Date - DAY(@Date) + 1) -1

-- get the first day of next month
SET @Next = DATEADD(MONTH,1,@MonthStart)

-- prove to yourself that these dates are correct (sanity check)
SELECT @MonthStart, @next

I've laid it out like this for you so that you can follow the logic, you can edit to your needs.

As an aside, the NOT IN convention is somewhat of an antipattern and some experts recommend against using BETWEEN.

LEFT JOIN

INSERT INTO [SupportTracker].[dbo].[DashboardRecords]
SELECT [bg_id]
      ,[bg_short_desc]
      ,[bg_reported_date]
      ,[bg_status_updated_date]
      ,[us_firstname]
      ,[us_lastname]
      ,[LastUpdatedUserFirstname]
      ,[LastUpdatedUserLastname]
      ,[st_name]
      ,[pr_name]
      ,[ct_name]
      ,[pj_name]
      ,[AssignedUserFirstname]
      ,[AssignedUserLastname]
      ,[bg_project]
      ,[no_of_hours]
      ,[BugType]
      ,[SubType]
      ,[Device]
      ,[pj_parent_id]
FROM [SupportTracker].[dbo].[ViewIssueListwBugTypeNDevice] b
LEFT JOIN [SupportTracker].[dbo].[DashboardRecords] d
    ON b.bg_id = d.bg_id
WHERE b.bg_reported_date >= @MonthStart and b.bg_reported_date < @Next
    AND d.[bg_short_desc] IS NULL

(this assumes [bg_short_desc] is a non-nullable field in the [DashboardRecords] table.

EVEN BETTER would be

NOT EXISTS

INSERT INTO [SupportTracker].[dbo].[DashboardRecords]

SELECT [bg_id]
      ,[bg_short_desc]
      ,[bg_reported_date]
      ,[bg_status_updated_date]
      ,[us_firstname]
      ,[us_lastname]
      ,[LastUpdatedUserFirstname]
      ,[LastUpdatedUserLastname]
      ,[st_name]
      ,[pr_name]
      ,[ct_name]
      ,[pj_name]
      ,[AssignedUserFirstname]
      ,[AssignedUserLastname]
      ,[bg_project]
      ,[no_of_hours]
      ,[BugType]
      ,[SubType]
      ,[Device]
      ,[pj_parent_id]
FROM [SupportTracker].[dbo].[ViewIssueListwBugTypeNDevice] b
WHERE b.bg_reported_date >= @MonthStart and b.bg_reported_date < @Next
    AND NOT EXISTS (SELECT 1 FROM [SupportTracker].[dbo].[DashboardRecords] d
        WHERE b.bg_id = d.bg_id);

Also, why are you ordering your inserts? Ordering would be more useful when you're selecting from the DashboardRecords table, right?

StackExchange Database Administrators Q#33297, answer score: 7