SQL表分区-合并边界点超过5000

如何解决SQL表分区-合并边界点超过5000

我们已经基于customerId和DayOfYearId对事实表进行了分区。现在我们达到了15000个限制扇出，目前我们有5000多个空分区，其中0行。我想一次合并所有这5000个边界点。是否有任何快速方法可以一次合并这些边界点。 代替

ALTER PARTITION FUNCTION myRangePF1 () MERGE RANGE (2001);

我本来打算将其放置在光标中，但它仍然会穿过数千个边界点，这非常慢...

        DECLARE @PartitionCustomerDY CURSOR;
        DECLARE @CustomerId int,@PartitionFunctioName nvarchar(25),@ObjectName varchar(max),@PartitionNum varchar(max),@CustomerDayOfYear varchar(25) 
        SET @CustomerId = 1 
        SET @PartitionFunctioName = 'myRangePF1'
        BEGIN
            SET @PartitionCustomerDY = CURSOR FOR
                SELECT disTINCT OBJECT_NAME(i.object_id) AS ObjectName,p.partition_number,CAST(rv.Value as int) AS [CustomerDayOfYear]
            FROM sys.partitions p
                JOIN sys.indexes i ON p.object_id = i.object_id AND p.index_id = i.index_id
                JOIN sys.partition_schemes ps ON ps.data_space_id = i.data_space_id
                JOIN sys.partition_functions f ON f.function_id = ps.function_id
                LEFT JOIN sys.partition_range_values rv ON f.function_id = rv.function_id AND p.partition_number = rv.boundary_id
                JOIN sys.destination_data_spaces dds ON dds.partition_scheme_id =ps.data_space_id AND dds.destination_id = p.partition_number
                JOIN sys.filegroups fg ON dds.data_space_id = fg.data_space_id
                JOIN (SELECT container_id,sum(total_pages) as total_pages
                        FROM sys.allocation_units
                        GROUP BY container_id) AS au ON au.container_id = p.partition_id 
                JOIN sys.tables t ON p.object_id = t.object_id
            WHERE f.name = @PartitionFunctioName and (CAST(rv.Value as int) / 1000) = @CustomerId
            ORDER BY ObjectName,p.partition_number;

            OPEN @PartitionCustomerDY
            FETCH NEXT FROM @PartitionCustomerDY
            INTO @ObjectName,@PartitionNum,@CustomerDayOfYear

            WHILE @@FETCH_STATUS = 0
            BEGIN
                   ALTER PARTITION FUNCTION  myRangePF1 ()
                   MERGE RANGE (@CustomerDayOfYear);  

              FETCH NEXT FROM @PartitionCustomerDY
              INTO @ObjectName,@CustomerDayOfYear
            END; 

            CLOSE @PartitionCustomerDY ;
            DEALLOCATE @PartitionCustomerDY;
        END;