Finding the Size of Clustered Columnstore Index


i'm trying check size of new clustered columnstore index (sql server 2014 cu2).

if use disk usage top tables report in ssms 64,585,168 kb data , 0 index. if query sys.column_store_row_groups dmv , sum size_in_bytes column 46,457,196,533 bytes (45,368,355 kb).

looking @ disk space usage report , space used value, seems agree first value.

there no deleted rows , row groups compressed. there 1 billion rows.

why discrepancy please? should looking @ size?

regards

ken

ken e

ken, numbers matching within 4%. discrepancy rounding size of each segment
, dictionary whole pages before adding them up. if half of last page empty on average each of these objects

sunil agarwal, sql server pm



SQL Server  >  SQL Server In-Memory Technologies



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