Partition Function in SQL Server
The partition function is created for setting the range partitions. The ranges can be set for a lower or upper threshold.
This is the first step in creating partitions
The syntax is as follows
CREATE PARTITION FUNCTION < Function Name > (< DataType >) AS RANGE LEFT/RIGHT FOR VALUES (< value1 >,< value2 >,…)
LEFT : This specifies the maximum value of the first partition
RIGHT : This specifies the minimum value of the second partition.
The below examples shows creating a partitions as follows
Partition 1 : column1 <= 1
Partition 2 : column1 > 1 and column1 <= 100
Partition 3 : column1 > 100 and column1 <= 1000
Partition 4 : column1 > 1000
CREATE PARTITION FUNCTION EmployeePartitionLeft (int) AS RANGE LEFT FOR VALUES (1, 100, 1000)
The below examples shows creating a partitions as follows
Partition 1 : column1 < 1
Partition 2 : column1 >= 1 and column1 < 100
Partition 3 : column1 >= 100 and colu