My instance took unusually long to come up, and the ERRORLOG showed ‘Starting up database’ many times for the same database. Here is why that happens.
COMPRESS_ALL_ROW_GROUPS: Forcing Delta Rowgroups Into Columnstore
One command turns an open delta rowgroup into compressed storage. Here is what it leaves behind, and why not to run it after every small load.
SQL SERVER – Attaching and Restoring Database in Clustering Generates An Error – Notes from the Field #115
Attaching or restoring a database on a cluster and getting an error? In Notes from the Field #115, Eduardo Castro explains what goes wrong with Clustering.
SQL SERVER – FIX Error 18456, Severity: 14, State: 6. Login failed for user
A reader hit Error 18456, Severity: 14, State: 6 while logging in. Here is what state 6 means and how to fix this login failed error.
SQL SERVER – View Dependencies on SQL Server: Hard & Soft Way
Most databases I meet as a consultant have no up-to-date documentation. Here is the hard way and the soft way to check SQL SERVER – View Dependencies yourself.
SQL SERVER – ShowPlan XML Additions for ColumnStore Indexes
How can you tell if a query used a columnstore index and batch processing? Here are the properties SQL Server adds to the ShowPlan XML for ColumnStore indexes.
Interview Question of the Week #058 – What is the Difference Among DECIMAL, FLOAT and NUMERIC Datatype?
What is the difference among DECIMAL, FLOAT and NUMERIC? DECIMAL and NUMERIC are the same datatype, while FLOAT is approximate. Here is when to use each.