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You have an Azure Synapse Analytics dedicated SQL pool named Pool1. Pool1 contains a table named table1. You load 5 TB of data intotable1. You need to ensure that columnstore compression is maximized for table1. Which statement should you execute?
Correct Answer: C
Columnstore and columnstore archive compression Columnstore tables and indexes are always stored with columnstore compression. You can further reduce the size of columnstore data by configuring an additional compression called archival compression. To perform archival compression, SQL Server runs the Microsoft XPRESS compression algorithm on the data. Add or remove archival compression by using the following data compression types: Use COLUMNSTORE_ARCHIVE data compression to compress columnstore data with archival compression. Use COLUMNSTORE data compression to decompress archival compression. The resulting data continue to be compressed with columnstore compression. To add archival compression, use ALTER TABLE (Transact-SQL) or ALTER INDEX (Transact-SQL) with the REBUILD option and DATA COMPRESSION = COLUMNSTORE_ARCHIVE. Reference: https://learn.microsoft.com/en-us/sql/relational-databases/data-compression/data-compression