mssqlserver分区表的左值与右值

Examples

A. Creating a RANGE LEFT partition function on an int column

The following partition function will partition a table or index into four partitions.

CREATE PARTITION FUNCTION myRangePF1 (int)  
AS RANGE LEFT FOR VALUES (1, 100, 1000);  

The following table shows how a table that uses this partition function on partitioning column col1 would be partitioned.

B. Creating a RANGE RIGHT partition function on an int column

The following partition function uses the same values for boundary_value [ ,...n ] as the previous example, except it specifies RANGE RIGHT.

CREATE PARTITION FUNCTION myRangePF2 (int)  
AS RANGE RIGHT FOR VALUES (1, 100, 1000);  

The following table shows how a table that uses this partition function on partitioning column col1 would be partitioned.

C. Creating a RANGE RIGHT partition function on a datetime column

The following partition function partitions a table or index into 12 partitions, one for each month of a year‘s worth of values in a datetime column.

CREATE PARTITION FUNCTION [myDateRangePF1] (datetime)  
AS RANGE RIGHT FOR VALUES (‘20030201‘, ‘20030301‘, ‘20030401‘,  
               ‘20030501‘, ‘20030601‘, ‘20030701‘, ‘20030801‘,   
               ‘20030901‘, ‘20031001‘, ‘20031101‘, ‘20031201‘);  

The following table shows how a table or index that uses this partition function on partitioning column datecol would be partitioned.

mssqlserver分区表的左值与右值

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