Hi,
The below query would be much safer to run-
if exists (select * from sys.objects where object_id = object_id(N'[dbo].[p_CreateNextAuditPartition]') and type in (N'P', N'SP'))
begin;
drop procedure dbo.p_CreateNextAuditPartition;
end;
go
create procedure [dbo].[p_CreateNextAuditPartition](
@dtToUseInCreatePartition datetime = null
)
as
begin;
if (@dtToUseInCreatePartition is null)
begin;
set @dtToUseInCreatePartition = getutcdate();
end;
-- First check whether Partition Mgmt enabled for this SQL server
-- Value of Engine edition for Sql Enterprise edition is 3 and for Sql Azure edition is 5
declare @edition int = convert(int, (select serverproperty('EngineEdition')));
if (@edition = 3 or @edition = 5)
begin;
-- Validate the Partition function exists
if not exists(select 1 from sys.partition_functions where name = 'AuditPFN')
begin;
RAISERROR('Partition function AuditPFN Not found. Exiting...', 16, 1);
return 1;
end;
declare @lastPartitionStartDate datetime;
select @lastPartitionStartDate = convert(datetime, max(prv.value))
from sys.dm_db_partition_stats pst
left outer join sys.partition_range_values prv on prv.boundary_id = pst.partition_number
where object_id = object_id('AuditBase')
and index_id in (0,1) and prv.value is not null;
declare @nextQtrEnd datetime;
select @nextQtrEnd = dateadd(ms, -3, dateadd(qq, datediff(qq, 0, @dtToUseInCreatePartition) + 2, 0));
-- Check if the partition already exists for @nextQtrEnd, then exit
declare @errMessage varchar(500);
if exists(select 1 from sys.partition_range_values where value = @nextQtrEnd)
begin;
set @errMessage = 'Partition already exists for ' + CAST(@nextQtrEnd as varchar(30)) + '. Exiting...';
print @errMessage;
return 2;
end;
-- Create a new partition only if there is no partition bounday within 2 months of the new date
-- this is basically to check if someone has already created the corresponding partition
-- We are checking with 2, so that change of timezone will not result in false positives
if abs(datediff(mm, @lastPartitionStartDate, @nextQtrEnd )) >= 2
begin;
alter partition scheme AuditPScheme next used [PRIMARY];
alter partition function AuditPFN() split range (@nextQtrEnd);
return 0;
end;
else
begin;
set @errMessage = 'Partition already exists within 2 months of ' + CAST(@nextQtrEnd as varchar(30)) + '. Exiting...';
print @errMessage;
return 3;
end;
end;
else
begin;
print 'Not SQL Azure or SQL Enterprise Edition. Exiting...';
return 5;
end;
end;
go
NOTE: Perform it in dark hours
Hope this helps!
Regards,
Venkatesh N
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