If you’re working with compressed indexes, SQL Server provides a system stored procedure to help test the space savings of implementing data compression: sp_estimate_data_compression_savings. Starting in SQL Server 2019, it can even be used to estimate savings with columnstore. I really don’t like sp_estimate_data_compression_savings. In … [Read More]
Changing a column from int to bigint has gotten a lot easier since I started working on SQL Server back at the turn of the century. SQL Server 2016 introduced the ability to do ALTER TABLE…ALTER COLUMN as an online operation using the WITH (ONLINE=ON) … [Read More]
Question I have created a table with 650 Numeric(19,4) columns. When I switch on Page Compression, by running I get Msg 1975, Level 16, State 1Index ‘PK_Mytable’ row length exceeds the maximum permissible length of ‘8060’ bytes. but 650 times 9 bytes is only 5850 … [Read More]
It’s T-SQL Tuesday, the blog party that SQL Server expert Adam Machanic (blog|twitter) started. This month’s episode is hosted by Michael J Swart (blog| twitter). The topic: SQL Server 2016 is out! SQL Server 2016 is hot off the presses, and Michael challenges us to blog about it. I’ve been using … [Read More]
SQL Server supports two kinds of data compression on rowstore data. Columnstore compression is for a different day. You can compress heaps, clustered indexes (on both tables and views), and nonclustered indexes (on both tables and views). Compression requirements Data compression is available in SQL … [Read More]
SQL Server supports two kinds of data compression on rowstore data. Columnstore compression is for a different day. You can compress heaps, clustered indexes (on both tables and views), and nonclustered indexes (on both tables and views). Compression requirements Data compression is available in SQL … [Read More]
SQL Server supports two kinds of data compression on rowstore data. Columnstore compression is for a different day. You can compress heaps, clustered indexes (on both tables and views), and nonclustered indexes (on both tables and views). Compression requirements Data compression is available in SQL … [Read More]
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