SQL Server分區表，可否按照多個列做爲分區函數的分區依據（轉載）

問：

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Hi,

I have a table workcachedetail with 40 million rows which has 8 columns.We decided to partition the table.Most of the queries in our environment uses 4 columns in the where clause or joins.If I partition the table with 4 columns then I may get better performance.Can we partition the table on multiple columns(like partitioning on id,deptid,designation)?

Thanks,

 

 

答：

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no

 

You can partition by creating a persisted computed columns.

https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-table-computed-column-definition-transact-sql

 

意思就是，目前SQL Server還不支持將多個列做爲分區函數的分區依據，只能用一列做爲分區函數的分區依據，可是咱們能夠將多個列構造爲一個計算列（computed columns）來做爲分區依據。

 

 

參考文獻：

how to partition a table on multiple columns