I compared a SQL Server 2005 paging query using ROW_NUMBER() with the SQL 2000 way of paging through temp or derived tables, both run on AdventureWorks.
SQL SERVER – 2005 – Performance Dashboard Reports
SQL Server 2005 Performance Dashboard Reports show CPU, IO, blocking and missing index problems as they happen. How to set them up and read them well.
SQL SERVER – Index Seek Vs. Index Scan (Table Scan)
Index Scan retrieves all the rows from the table. Index Seek retrieves selective rows from the table.
SQL SERVER – Difference between DISTINCT and GROUP BY – Distinct vs Group By
What is the difference between DISTINCT and GROUP BY? They usually produce the same plan. Use GROUP BY for aggregates and DISTINCT to remove duplicates.
SQL SERVER – Fix : Error 701 There is insufficient system memory to run this query
For Error 701, insufficient system memory, compare max server memory with min server memory, check the paging file size, and free caches with DBCC commands.
SQL SERVER – @@IDENTITY vs SCOPE_IDENTITY() vs IDENT_CURRENT – Retrieve Last Inserted Identity of Record
@@IDENTITY vs SCOPE_IDENTITY() vs IDENT_CURRENT: how each one returns the last identity value, and why a trigger can make @@IDENTITY give the wrong one.
SQL SERVER – Stored Procedure – Clean Cache and Clean Buffer
Clean Cache commands affect different parts of SQL Server memory. I separate buffer-pool testing from execution-plan testing.